EN ISO 24200:2022

Petroleum, petrochemical and natural gas industries - Bulk material for offshore projects - Pipe support (ISO 24200:2022)

This document specifies the requirements for design including shape and dimensions, material as well as strength for pipe support. Applicable pipe size range varies depending on support types. This document covers topside systems for fixed or floating offshore oil and gas projects. This document is applicable to design temperature of support within the range between –46 °C up to 200 °C.
This document is limited to metallic pipes, covering the following pipe supports:
—    clamped shoe;
—    welded shoe;
—    U-bolt;
—    U-strap;
—    bracing for branch connection;
—    trunnion and stanchion;
—    guide support (guide, hold-down, guide and hold-down, line stop).

Erdöl-, petrochemische und Erdgasindustrie - Schüttgut für Offshore-Projekte - Rohrabstützung (ISO 24200:2022)

Industries pétrolière, pétrochimique et du gaz naturel - Matériels de base pour les projets en mer - Supports de tuyauterie (ISO 24200:2022)

Le présent document spécifie les exigences de conception, notamment la forme et les dimensions, les matériaux ainsi que la résistance des supports de tuyauterie. La plage de dimensions applicable des tuyauteries varie selon les types de supports. Le présent document couvre les systèmes des superstructures dans le cadre de projets de pétrole et de gaz fixes ou flottants en mer. Le présent document s'applique à une température de conception comprise entre –46 °C et 200 °C pour les supports.
Il se limite aux tuyauteries métalliques, couvrant les supports de tuyauterie suivants :
—    patin à collier ;
—    patin soudé ;
—    étrier ;
—    collier plat ;
—    raidisseur pour piquage ;
—    tourillon et chandelle ;
—    support de guide (guide, anti-soulèvement, guide et anti-soulèvement, butée axiale).

Petrokemična industrija ter industrija za predelavo nafte in zemeljskega plina - Razsuti material za priobalne projekte - Podpora za cevi (ISO 24200:2022)

Ta dokument določa zahteve za načrtovanje, vključno z obliko in merami, materialom in trdnostjo za podporo za cevi od NPS 2 do NPS 36, razen U-objemk in U-trakov. Ta dokument obravnava nadvodne sisteme za nepremične ali plavajoče naftne in plinske priobalne projekte. Ta dokument se uporablja za načrtovano temperaturo podpore v območju od –23 °C do 200 °C. Omejen je samo na kovinske cevi.
Ta dokument obravnava zahteve za naslednje podpore za cevi:
–   objemni nosilec;
–   varjeni nosilec;
–   U-objemka;
–   U-trak;
–   oporniki za priključitev razvodov;
–   valjasti in sidrni podpornik;
–   podporniki z vodili (bočno zadrževanje, navpično zadrževanje, bočno/navpično zadrževanje).
Ta dokument obravnava zahteve za načrtovanje zgoraj navedenih elementov, zato ne zajema nujno vseh ostalih tipov podpor za cevi.

General Information

• Status: Published
• Publication Date: 24-May-2022
• Withdrawal Date: 29-Nov-2022
• ICS: 75.180.10 - Exploratory, drilling and extraction equipment
• Technical Committee: CEN/TC 12 - Materials, equipment and offshore structures for petroleum and natural gas industries
• Drafting Committee: CEN/TC 12 - Materials, equipment and offshore structures for petroleum and natural gas industries
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 25-May-2022
• Completion Date: 25-May-2022
• Ref Project: SIST EN ISO 24200:2022 - Petroleum, petrochemical and natural gas industries - Bulk material for offshore projects - Pipe support (ISO 24200:2022)

Overview

EN ISO 24200:2022 - “Petroleum, petrochemical and natural gas industries - Bulk material for offshore projects - Pipe support (ISO 24200:2022)” is a harmonized CEN/ISO standard that specifies unified requirements for metallic pipe supports used on topside systems of fixed and floating offshore oil & gas projects. The document defines requirements for design (shape and dimensions), material selection and strength for a range of common pipe support types and applies to design temperatures from −46 °C to 200 °C.

Key topics and technical requirements

• Scope and applicability
  • Topside systems for fixed or floating offshore installations.
  • Metallic pipe supports only; applicable pipe-size range varies by support type.
• Support types covered
  • Clamped shoe, welded shoe, U-bolt, U-strap
  • Bracing for branch connection, trunnion, stanchion
  • Guide supports (guide, hold‑down, guide & hold‑down, line‑stop)
• Design and material considerations
  • Unified specifications for shape, dimensions and strength to ensure compatibility across projects.
  • Material selection criteria suitable for design temperatures between −46 °C and 200 °C.
  • Key parameters and size/dimension guidance are provided for each support type.
• Selection and application guidance
  • Support selection guidelines to match support type to pipe size, load endurance and service conditions.
  • Application notes to enhance maintainability, integrity and fabrication efficiency.
• Structure of the standard
  • Terms/definitions, normative references, detailed chapters on individual support types with key parameters, dimensions and application recommendations.

Practical applications

• Standardizes pipe support designs for offshore topside piping systems to improve:
  • Interoperability between projects and suppliers
  • Fabrication efficiency and reduced lead times
  • Cost control through reduced engineering effort and material optimization
  • Maintainability and integrity of piping systems in harsh offshore environments
• Useful for specification, procurement and QA of pipe supports used in topside piping on offshore platforms, FPSOs and other floating or fixed production units.

Who should use this standard

• Offshore piping designers and engineering firms
• Owners/operators in petroleum, petrochemical and natural gas industries
• Fabricators, shipyards and suppliers of pipe supports
• Procurement teams and standards/QA departments
• Integrity, maintenance and installation teams working on topside piping

Related information

• EN ISO 24200:2022 was prepared by ISO/TC 67 in collaboration with CEN/TC 12 and is endorsed by CEN as a European Standard. For implementation, consult the full standard for detailed dimensions, material specifications and application limits.

Standards Content (Sample)

SLOVENSKI STANDARD
01-julij-2022
Petrokemična industrija ter industrija za predelavo nafte in zemeljskega plina -
Razsuti material za priobalne projekte - Podpora za cevi (ISO 24200:2022)
Petroleum, petrochemical and natural gas industries - Bulk material for offshore projects
- Pipe support (ISO 24200:2022)
Erdöl-, petrochemische und Erdgasindustrie - Schüttgut für Offshore-Projekte (ISO
24200:2022)
Industries pétrolière, pétrochimique et du gaz naturel - Matériels de base pour les projets
en mer - Supports de tuyauterie (ISO 24200:2022)
Ta slovenski standard je istoveten z: EN ISO 24200:2022
ICS:
75.180.10 Oprema za raziskovanje, Exploratory, drilling and
vrtanje in odkopavanje extraction equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 24200
EUROPEAN STANDARD
NORME EUROPÉENNE
May 2022
EUROPÄISCHE NORM
ICS 75.180.10
English Version
Petroleum, petrochemical and natural gas industries - Bulk
material for offshore projects - Pipe support (ISO
24200:2022)
Industries pétrolière, pétrochimique et du gaz naturel - Erdöl-, petrochemische und Erdgasindustrie -
Matériels de base pour les projets en mer - Supports de Schüttgut für Offshore-Projekte (ISO 24200:2022)
tuyauterie (ISO 24200:2022)
This European Standard was approved by CEN on 1 May 2022.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 24200:2022 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 24200:2022) has been prepared by Technical Committee ISO/TC 67 "Materials,
equipment and offshore structures for petroleum, petrochemical and natural gas industries" in
collaboration with Technical Committee CEN/TC 12 “Materials, equipment and offshore structures for
petroleum, petrochemical and natural gas industries” the secretariat of which is held by NEN.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by November 2022, and conflicting national standards
shall be withdrawn at the latest by November 2022.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
Any feedback and questions on this document should be directed to the users’ national standards
body/national committee. A complete listing of these bodies can be found on the CEN website.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the
United Kingdom.
Endorsement notice
The text of ISO 24200:2022 has been approved by CEN as EN ISO 24200:2022 without any modification.

INTERNATIONAL ISO
STANDARD 24200
First edition
2022-05
Petroleum, petrochemical and natural
gas industries — Bulk material for
offshore projects — Pipe support
Industries pétrolière, pétrochimique et du gaz naturel — Matériels de
base pour les projets en mer — Supports de tuyauterie
Reference number
ISO 24200:2022(E)
ISO 24200:2022(E)
© ISO 2022
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii
ISO 24200:2022(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms, definitions and abbreviated terms . 1
3.1 Terms and definitions . 1
3.2 Abbreviated terms . 3
4 General . 4
5 Support selection guideline . 4
6 Design and material requirements .5
6.1 Clamped shoe . 5
6.1.1 Key parameters . 5
6.1.2 Size/Dimension . 5
6.1.3 Material. 7
6.1.4 Application . 7
6.2 Welded shoe . 8
6.2.1 Key parameters . 8
6.2.2 Size/Dimension . 8
6.2.3 Material.12
6.2.4 Application .12
6.3 U-bolt . 13
6.3.1 Key parameters .13
6.3.2 Size/Dimension . 13
6.3.3 Application .15
6.4 U-strap . 15
6.4.1 Key parameters .15
6.4.2 Size/Dimension . 16
6.4.3 Application . 18
6.5 Bracing for branch connection . 18
6.5.1 Key parameters . 18
6.5.2 Size/Dimension . 18
6.5.3 Application . 21
6.6 Trunnion and stanchion . 21
6.6.1 Trunnion . 21
6.6.2 Stanchion . 25
6.7 Guide, hold-down, guide and hold-down and line-stop support .29
6.7.1 Guide . 29
6.7.2 Guide and hold-down. 31
6.7.3 Line-stop . 33
6.8 Guide, guide and hold-down and line-stop support – With hole . 35
6.8.1 Guide . 35
6.8.2 Hold-down .38
6.8.3 Guide and hold-down. 41
6.8.4 Line-stop . 45
Bibliography .49
iii
ISO 24200:2022(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to
the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see
www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 67, Materials, equipment and offshore
structures for petroleum, petrochemical and natural gas industries, in collaboration with the European
Committee for Standardization (CEN) Technical Committee CEN/TC 12 Materials, equipment and
offshore structures for petroleum, petrochemical and natural gas industries, in accordance with the
Agreement on technical cooperation between ISO and CEN (Vienna Agreement).
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
iv
ISO 24200:2022(E)
Introduction
This document aims to provide a set of unified specifications for pipe supports for offshore projects,
responding to the current lack of recognized specifications for such pipe supports in terms of shape,
dimensions, material and application area.
Company specific standards from owners, engineering companies and shipbuilders have therefore
been prevailing for specifications related to pipe support types, shapes, sizes and dimensions. There
are big variations in specifications from project to project, because of lack of internationally recognized
specifications within this area.
Thus, individual pipe support items have often failed to be compatible across different projects. A
suggested solution is to apply one unified approach for design, material selection, shape and application,
etc. This will also significantly reduce engineering hours and lead times and improve the fabrication
efficiency. Other expected benefits are improved practice for design and application of pipe support
types related to design life, maintainability and integrity. The ultimate goal is to reduce the overall cost
in general offshore projects and lead time while increase the efficiency, interoperability and safety.
In the lack of common industrial specifications for pipe supports, an assessment has been conducted to
compare the pipe supports designs and application areas used in past offshore projects. Based on the
supports design examples of those projects, a set of unified specifications have been established, which
are described in this document.
The main factors considered to arrive at an optimal design of pipe supports are pipe load endurance,
weight and material cost. Those three factors have been considered when reviewing pipe supports
from past projects and ultimately defining the requirements described in this document.
The requirements including design and dimensions specified in this document are based on the use of
H-beam or plate that are commonly used as sections. When an unlisted material or section is used, the
designer is responsible for demonstrating the validity of the allowable stress and other limits used in
design.
This document can be used as a baseline for suppliers and engineering companies that do not already
have a more comprehensive and usable standard for both greenfield and brownfield projects.
v
INTERNATIONAL STANDARD ISO 24200:2022(E)
Petroleum, petrochemical and natural gas industries —
Bulk material for offshore projects — Pipe support
1 Scope
This document specifies the requirements for design including shape and dimensions, material as
well as strength for pipe support. Applicable pipe size range varies depending on support types. This
document covers topside systems for fixed or floating offshore oil and gas projects. This document is
applicable to design temperature of support within the range between –46 °C up to 200 °C.
This document is limited to metallic pipes, covering the following pipe supports:
— clamped shoe;
— welded shoe;
— U-bolt;
— U-strap;
— bracing for branch connection;
— trunnion and stanchion;
— guide support (guide, hold-down, guide and hold-down, line stop).
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
ASTM A193, Standard Specification for Alloy-Steel and Stainless Steel Bolting for High Temperature or High
Pressure Service and Other Special Purpose Applications
ASTM A194, Standard Specification for Carbon Steel, Alloy Steel, and Stainless Steel Nuts for Bolts for High
Pressure or High Temperature Service, or Both
3 Terms, definitions and abbreviated terms
3.1 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
ISO 24200:2022(E)
3.1.1
allowable load
maximum load that each support can withstand under static load conditions
Note 1 to entry: For dynamic loads induced by occasional or extreme conditions, the maximum allowable load
can be increased by applying allowable increase factor in accordance with project specification or international
code.
3.1.2
bracing for branch connection
reinforcement used to avoid fatigue failure due to the vibration from the parent pipe
3.1.3
bracket
main ‘U’-shaped part of U-strap (3.1.20) that is in contact with the protection
3.1.4
grip type
type of U-bolt (3.1.19) without any allowances for the inside pipe to move
3.1.5
guide support
support used to restrict lateral movement of pipe
3.1.6
guide and hold-down
support used to restrict vertical and lateral movement of pipe
3.1.7
gusset
plates placed between pipe and base plate in lateral direction of pipe to resist any load transferred to
piping
3.1.8
hold-down
support used to restrict vertical movement of pipe
3.1.9
line-stop
support used to restrict axial movement of pipe
3.1.10
machine bolt
threaded bolt with a square or hexagonal head
3.1.11
non-grip type
type of U-bolt (3.1.19) that gives some allowance for the inside pipe to move vertically and laterally with
a maximum gap of 3 mm
3.1.12
pipe shoe
structure consisting of a saddle and integral base that is used to support the pipe by transmitting the
load or forces to the adjacent structure
Note 1 to entry: The pipe shoe can be divided into clamped shoe and welded shoe.
3.1.13
protection pad
pad to prevent damages caused from direct contact between pipe and structural support
Note 1 to entry: If anti-vibration function is required, it can be replaced by anti-vibration material.
ISO 24200:2022(E)
3.1.14
rib plate
plate placed between pipe and base plate in axial direction of pipe to resist any load transferred to
piping
3.1.15
slotted hole
extension of hole for bolts allowing lateral movement
3.1.16
stanchion
extended pipe resting on floor or structure vertically
3.1.17
strip
thin pad, typically made of non-water retaining material for clamp and anti-mechanical vibration for
U-strap (3.1.20), under the strap used to prevent fretting and other vibration between pipe and strap
3.1.18
trunnion
pipe extended hung on structure or spring
3.1.19
U-bolt
commonly used pipe support type in the shape of the letter “U” with screw threads on both ends
Note 1 to entry: The U-bolt can be divided into grip type (3.1.4) and non-grip type (3.1.11).
3.1.20
U-strap
commonly used pipe support designed to absorb mechanical vibration from piping by inserting anti-
mechanical vibration material
Note 1 to entry: The U-strap can be divided into type A and type B (see 5.4).
3.1.21
wear pad
protection plate or pipe fixture or structural attachment attached to pipe to enhance strength of pipe
wall and to prevent direct damages from welded attachment or high bearing load
3.1.22
weep hole
small opening, typically located at the bottom of the object, that allows water or gas to drain from
within an assembly and checks pipe leakage within an assembly
3.2 Abbreviated terms
AIV acoustic induced vibration
CRA corrosion resistant alloy
CS carbon steel
LTCS low temperature carbon steel
NPS nominal pipe size
PTFE polytetrafluoroethylene
UV ultra-violet
ISO 24200:2022(E)
4 General
The pipe supports described in this document are applicable to the pipes designed according to the
following:
— ASME B16.5 for pipe flanges and flanged fittings;
— ASME B16.9 for factory-made wrought butt welding fittings;
— ASME B16.10 for face-to-face and end-to-end dimensions of valves;
— ASME B16.19 for stainless steel pipe;
— ASME B16.47 for large diameter steel flanges;
— ASME B18.2.4 for metric bolt and nuts;
— ASME B31.3 for process piping;
— ASME B36.10M for welded and seamless wrought steel pipe.
Internationally recognized piping codes and standards are applicable for welding of pipe support
attachments (including wear pads, trunnions and pipe shoes) with the pipe.
5 Support selection guideline
This clause provides a guideline to select the appropriate type of support depending on different criteria.
The actual selection may be different from this guidance, depending on the client’s requirements,
project specification and pipe material.
Generally proper support should be selected depending on:
a) required movement restraint;
b) forces and loads at point of support;
c) pipe insulation;
d) structural limitations / restrictions.
Support can be generally selected from Table 1 depending on pipe size and insulation.
ISO 24200:2022(E)
Table 1 — Possible support selection
Pipe size Insulation Priority level Type
Pipe NPS 8 and below Insulated Priority Welded shoe
a a,b
Alternative Clamped shoe / U-bolt
a,b
/ U-strap
a,b a
Uninsulated Priority U-bolt / U-strap / Di-
rect resting on structure
Alternative Clamped shoe / Welded
shoe
Pipe NPS 10 and above Insulation Priority Welded shoe
c
Alternative Clamped shoe
Uninsulated Priority Welded shoe / Direct rest-
ing on structure
c
Alternative Clamped shoe
All support type should be verified not to exceed maximum allowable load.
The type directly resting on structure should include proper isolation between the pipe and the structure.
NOTE 1 Supporting method will be more specified as resting/hold down/guide/line stop as per pipe stress analysis.
NOTE 2 Trunnion type of support are same priority with welded shoe.
a
System operating temperature shall be within the temperature range of contacted coating material.
b
U-bolt can be selected only if partial absence of insulation on U-bolt section is allowed such as personal protection .
c
Welded shoe to be a priority when stopper is required.
6 Design and material requirements
6.1 Clamped shoe
6.1.1 Key parameters
The key parameters of the clamped shoe are:
— shape;
— dimension;
— material;
— application;
— allowable load.
6.1.2 Size/Dimension
Figure 1 shows the design specification of clamped shoe used for steel/non-ferrous NPS 2 to NPS 36.
Table 2 presents the dimensions, as also shown in Figure 1, including standard length and height of
clamped shoe for different pipe sizes.
ISO 24200:2022(E)
Dimensions in millimetres
a) Clamp detail (typical)
b) For pipe NPS 2
c) For pipe NPS 3 to NPS 36
ISO 24200:2022(E)
Key
1 clamp 5 bottom of pipe
a
2 nut Typical.
b
3 machine bolt Strip to be fabricated as 2 pieces with cut ring at this
corner.
4 3 mm thickness strip (non-water retaining and anti-
mechanical vibration material)
Height, H, shall be indicated on isometric drawing, if greater than 100 mm with a maximum of 175 mm.
All welds shall be 6 mm of welding leg continuous fillet, unless specified otherwise.
Clamp material should be in accordance with ASTM A36 or equivalent material (e.g. JIS SS400 per JIS G3101).
For machine bolt, at least two threads of bolt shall be protruded at the end of nut.
Dimensions shown in Table 2 are based on 3 mm thickness of strip. It shall be recalculated upon on the material and
thickness.
NOTE Length, L, can be increased or decreased, if required when indicated on isometric drawing.
Figure 1 — Design specification of clamped shoe used for steel/non-ferrous NPS 2 to NPS 36
Table 2 — Dimensions of clamped shoe for different pipe sizes
Length Dimension Allowable
L load
Pipe Bolt
ΦA B C D E F G H J K T W
mm kN
NPS Standard Long mm inch Vertical
2 200 300 66 152 120 16 5 12 30 100 40 25 10 80 M12 / 5,5
3 200 300 95 192 160 16 8 16 30 100 40 25 10 100 M12 / 19
4 250 300 120 236 196 20 8 16 40 100 45 25 10 120 M16 / 24
6 250 350 174 310 264 23 10 20 40 100 45 25 10 140 M20 / 25
8 300 400 225 360 316 22 10 20 40 100 45 25 10 180 M20 / 25
10 300 400 279 448 390 29 12 24 50 100 50 25 10 220 M24 1 32
12 300 400 330 560 470 45 15 34 50 100 50 25 10 260 M24 1 41
14 300 400 362 618 510 54 15 40 65 100 58 35 15 300 M24 1 84
16 300 400 412 668 560 54 15 40 65 100 58 35 15 370 M24 1 90
18 350 400 463 718 610 54 15 40 65 100 58 35 15 370 M24 1 91
20 350 450 514 788 680 54 20 40 65 100 58 35 15 420 M36 1 / 106
24 400 450 616 898 790 54 20 40 80 100 65 35 15 470 M36 1 / 122
26 400 450 666 988 880 54 25 40 80 100 65 45 15 540 M36 1 / 147
28 450 550 717 1 038 930 54 25 40 80 100 65 45 15 560 M36 1 / 150
30 450 550 768 1 092 984 54 25 40 80 100 65 45 15 610 M36 1 / 158
32 450 550 819 1 140 1 030 55 25 40 110 100 80 55 15 620 M36 1 / 175
34 500 600 870 1 180 1 070 55 25 40 110 100 80 55 15 640 M36 1 / 188
36 500 600 920 1 220 1 110 55 25 40 110 100 80 55 15 660 M36 1 / 193
6.1.3 Material
Material for all the associated parts, including clamp, base plate, gusset and rib plate, shall be of carbon
steel for all pipes. Other material may be used instead of carbon steel in case of specific requirements.
6.1.4 Application
Lines sizes listed in Figure 1 can be applicable with clamped shoe.
ISO 24200:2022(E)
The clamped shoe may be used as guide, but torque should be calculated and defined depending on
project. The clamped shoe shall not be used for anchor or axial stops without lugs on pipe.
6.2 Welded shoe
6.2.1 Key parameters
The key parameters of the welded shoe are:
— shape;
— dimension;
— material;
— application;
— allowable load.
6.2.2 Size/Dimension
Figure 2 shows the design specification of welded shoe used for pipes of up to NPS 2. Table 3 presents
the dimensions, as also shown in Figure 2, including standard length and height of welded shoe for
different pipe sizes.
ISO 24200:2022(E)
Dimensions in millimetres
Key
1 bottom of pipe 4 wear pad
a
2 top of steel Typical.
3 6 mm weep hole
For NPS 2 and below, wear pad shall be applied for thin wall pipe (SCH. 10S and below for CRA material, and SCH.
30 and below for CS material).
For wear pad thickness for pipe thickness less than 10 mm, the same thickness as parent pipe shall be used;
otherwise 10 mm or higher thickness should be used.
Height, H, shall be noted on isometric drawing, if greater than 100 mm.
All welds shall be 6 mm of welding leg continuous fillet, unless specified otherwise.
All weep holes shall be sealed with mastic (resin) after hydro test. The mastic shall be watertight, UV resistant and
also able to endure pipe operating temperature as a minimum requirement.
For pipes of NPS 2, gussets are not required. If the shoe length is more than 500 mm, an additional gusset shall be
added.
NOTE Length, L, can be increased or decreased, if required when indicated on isometric drawing.
Figure 2 — Design specification of welded shoe used for pipes of NPS 2
Figure 3 shows the design specification of welded shoe used for pipes of from NPS 3 to NPS 30. Table 3
presents the dimensions, as also shown in Figure 3, including standard length and height of welded
shoe for different pipe sizes.
ISO 24200:2022(E)
Dimensions in millimetres
Key
1 bottom of pipe 4 wear pad
a
2 top of steel Typical.
3 6 mm weep hole
For NPS 30 and below, wear pad shall be applied for thin wall pipe (SCH. 10S and below for CRA material, and SCH.
30 and below for CS material).
For wear pad thickness for pipe thickness less than 10 mm, the same thickness as parent pipe shall be used;
otherwise 10 mm or higher thickness should be used.
Height, H, shall be noted on isometric drawing, if greater than 100 mm.
All welds shall be 6 mm of welding leg continuous fillet, unless specified otherwise.
All weep holes shall be sealed with mastic(resin) after hydro test. The mastic shall be watertight, UV resistant and
also able to endure pipe operating temperature as a minimum requirement.
For pipes from NPS 3 to NPS 30, shoe shall have two gussets located in symmetrical distance in the centre of the
shoe. If the shoe length is more than 500 mm, an additional gusset shall be added.
NOTE Length, L, can be increased or decreased, if required when indicated on isometric drawing.
Figure 3 — Design specification of welded shoe used for pipes of from NPS 3 to NPS 30
Figure 4 shows the design specification of welded shoe used for pipes of from NPS 32 to NPS 36. Table 3
presents the dimensions, as also shown in Figure 4, including standard length and height of welded
shoe for different pipe sizes.
ISO 24200:2022(E)
Dimensions in millimetres
Key
1 bottom of pipe 4 wear pad thickness
2 top of steel 5 gusset
a
3 6 mm weep hole Typical.
For wear pad thickness for pipe thickness less than 10 mm, the same thickness as parent pipe shall be used;
otherwise 10 mm or higher thickness should be used.
Height, H, shall be noted on isometric drawing, if greater than 100 mm.
All welds shall be 6 mm of welding leg continuous fillet, unless specified otherwise.
All weep holes shall be sealed with mastic(resin) after hydro test. The mastic shall be watertight, UV resistant and
also able to endure pipe operating temperature as a minimum requirement.
For pipes from NPS 32 to NPS 36, shoe shall have two gussets located in symmetrical distance in the centre of the
shoe.
NOTE Length, L, can be increased or decreased, if required when indicated on isometric drawing.
Figure 4 — Design specification of welded shoe used for pipes of from NPS 32 to NPS 36
Table 3 — Dimensions of welded shoe for different pipe sizes
Length Height Allowable
Pipe
L H load
Dimension
Width
size
W
mm mm kN
NPS Standard Long Standard A K T Vertical
mm
mm mm mm
2 200 300 60 100 25 25 10 7
3 200 300 100 100 25 25 10 10
4 250 300 120 100 25 25 10 17
6 250 350 140 100 25 25 10 25
8 300 400 180 100 25 25 10 27
10 300 400 220 100 25 25 10 30
12 300 400 260 100 25 25 10 32
14 300 400 300 100 25 35 15 54
16 300 400 370 100 25 35 15 58
18 350 400 370 100 25 35 15 65
20 350 450 420 100 25 35 15 98
24 400 450 470 100 25 35 15 100
ISO 24200:2022(E)
Table 3 (continued)
Length Height Allowable
Pipe
L H load
Dimension
Width
size
W
mm mm kN
NPS Standard Long Standard A K T Vertical
mm
mm mm mm
26 400 450 540 100 25 55 15 155
28 450 550 560 100 25 55 15 158
30 450 550 610 100 25 55 15 163
32 450 550 700 100 25 70 15 240
34 500 600 730 100 25 70 15 243
36 500 600 770 100 25 70 15 248
Table 4 presents the assumption that has been used to calculate the maximum allowable loads.
Table 4 — Calculation hypothesis for maximum allowable loads of welded shoes
Rating Material Size Schedule Temperature Pressure
2 NPS to 6 NPS S/40
150 ASTM A106 100 °C 1 800 000 Pa
8 NPS to 36 NPS S/20
6.2.3 Material
Tables 5 and 6 show the material specification for each part of the welded shoe without and with wear
pad, respectively. Any plate welded to the pressure boundary shall be of the same material of the pipe.
Table 5 — Material specification for welded shoe without wear pad
Pipe Rib plate and stiffener Base plate
CS and LTCS
Galvanized CS
Same or equivalent to parent
ASTM A36 or equivalent
Stainless steel,
pipe
duplex stainless steel, super duplex
stainless steel
Table 6 — Material specification for welded shoe with wear pad
Pipe Wear pad Rib plate and stiffener Base plate
CS and LTCS CS
Galvanized CS Galvanized CS or CS
Same or equivalent to
ASTM A36 or equivalent
Stainless steel,
parent pipe
Carbon steel or stainless
duplex stainless steel, super
steel
duplex stainless steel
6.2.4 Application
The welded shoe can be applied at:
— all insulated lines;
— all uninsulated slope lines of NPS 2 and above.
ISO 24200:2022(E)
Application of welded pipe shoe shall be minimized for lines having risks of AIV. Either clamped shoe
or full encirclement of wear pad may be used for this purpose, provided that asymmetric discontinuity
between pipe and wear pad to damp-out the level of shell vibration is avoided.
6.3 U-bolt
6.3.1 Key parameters
The size of the U-bolt is described by the size of pipe it supports (e.g. an NPS 2 U-bolt means it supports
an NPS 2 nominal diameter pipe). The non-grip type gives some allowance for the inside pipe to move
vertically and lateral with a gap of 3 mm. Grip type U-bolts may be applied for NPS 4 and below size
pipe. Non-grip type U-bolts may be applied for NPS 8 and below size pipe.
The key parameters of the U-bolt are:
— material type(bolt/nut/washer);
— thread dimensions (e.g. M12) (length and diameter);
— inside dimension (i.e. the distance between two legs);
— inside height;
— allowable load.
6.3.2 Size/Dimension
Figure 5 shows the design specification of U-bolt for non-grip type. Table 7 presents, as also shown in
Figure 5, the dimensions of non-grip type U-bolt for different pipe sizes.
Dimensions in millimetres
a) Overall design
b) Design of isolation pad, 10 mm thickness, white colour
ISO 24200:2022(E)
Key
a
1 polytetrafluoroethylene (PTFE) coating, 2 mm Typical.
thickness
b
2 existing steel See Figure 5 b) for details.
Isolation pad shall be provided with U-bolts as assembly.
One additional nut (3 in total) shall be used to prevent nut loose.
Size M8 and below of U-bolt shall be B8M per ASTM A193. Size M10 and above shall be B7 per ASTM A193.
Nut for size up to M8 shall be of 8M as per ASTM A194.
Nut for size M10 and above shall be of 2H as per ASTM A194.
Figure 5 — Design specification of non-grip type U-bolt
Table 7 — Dimensions of non-grip type U-bolt for different pipe sizes
Pipe Dimension
Line U-bolt Lateral Vertical
out-side Weight
size / nut load load
P D C L H U X Y Z
diameter
kg
NPS mm kN kN
mm mm mm mm mm mm mm mm mm
mm
/ 21,4 M8 39 8 2 51 32 10 20 79 40 1,37 1,47 0,1
/ 26,7 M8 45 8 3 52 32 10 20 85 40 1,11 1,38 0,3
1 33,4 M8 51 8 5 55 33 10 20 91 40 0,89 1,25 0,6
1 / 48,3 M10 68 10 7 63 35 12 25 118 50 4,14 6,65 0,4
2 60,3 M10 80 10 10 66 35 12 25 130 50 3,21 5,55 0,5
3 88,9 M12 111 12 16 78 40 14 25 161 50 3,42 6,37 0,7
4 114,3 M16 140 16 20 97 49 18 30 200 60 6,48 12,08 1,0
6 168,3 M16 194 16 34 110 49 18 30 254 60 3,32 6,92 2,0
8 219,1 M20 249 20 45 130 55 22 35 319 70 5,03 10,58 2,3
Figure 6 shows the design specification of U-bolt for grip type. Table 8 presents, as also shown in
Figure 6, the dimensions of grip type U-bolt for different pipe sizes.
Dimensions in millimetres
a) Overall design
ISO 24200:2022(E)
b) Design of isolation pad, 10 mm thickness, white colour
Key
1 no gap 3 existing steel
a
2 polytetrafluoroethylene (PTFE) coating, 2 mm See Figure 6 b) for details.
thickness
Isolation pad shall be provided with U-bolts as assembly.
One additional nut (2 in total) shall be used to prevent nut loose.
Size M8 and below of U-bolt shall be B8M per ASTM A193. Size M10 and above shall be B7 per ASTM A193.
Nut for size up to M8 shall be of 8M as per ASTM A194.
Nut for size M10 and above shall be of 2H as per ASTM A194.
Figure 6 — Design specification of grip type U-bolt
Table 8 — Dimensions of grip type U-bolt for different pipe sizes
Pipe Dimension
U-bolt Later- Vertical
Line
Weight
outside
/ nut al load
size
P D C L H U X Y Z
diameter
kg
NPS
mm mm mm mm mm mm mm mm mm
mm kN kN
mm
/ 21,4 M8 39 8 5 47 32 10 20 79 40 1,37 1,47 0,1
/ 26,7 M8 45 8 6 49 32 10 20 85 40 1,11 1,38 0,3
1 33,4 M8 51 8 8 51 32 10 20 91 40 0,89 1,25 0,6
1 / 48,3 M10 68 10 10 60 35 12 25 118 50 4,14 6,65 0,4
2 60,3 M10 80 10 13 61 35 12 25 130 50 3,21 5,55 0,5
3 88,9 M12 111 12 19 72 40 14 25 161 50 3,42 6,37 0,7
4 114,3 M16 140 16 23 89 49 18 30 200 60 6,48 12,08 1,0
6.3.3 Application
Use of U-bolts should be avoided in services with extreme vibration.
6.4 U-strap
6.4.1 Key parameters
The type of U-strap can be classified into two types:
1) type A: fixed type, no slotted hole in bolt hole;
2) type B: this type allows for lateral movement due to a slotted hole in the bolt hole.
ISO 24200:2022(E)
The key parameters of the U-strap are:
— strap dimension: length, radius, width and thickness;
— strip size;
— protection pad size;
— bolt/nut/washer size;
— isolation pad size;
— bracket size;
— material for strap, strip, protection pad, bolts/nuts/washers and isolation pad;
— allowable load.
6.4.2 Size/Dimension
Figure 7 shows the design specification of U-strap for type A and type B. Table 9, as also shown in
Figure 7, presents the dimensions of U-strap clamp type A and type B for different pipe sizes.
Dimensions in millimetres
a)  General design for U-strap
b) Design for isolation pad for pipe NPS ¾ to c)  Design for isolation pad for pipe NPS 10
NPS 8
d) Design for clamp ‘type A’ for pipe NPS 3/4 to e) Design for clamp ‘type A’ for pipe NPS 3 to
NPS 2 NPS 8
ISO 24200:2022(E)
f) Design for clamp ‘type A’ for pipe NPS 10 g) Design for clamp ‘type B’ for pipe NPS 3/4 to
NPS 2
h) Design for clamp ‘type B’ for pipe NPS 3 to i) Design for clamp ‘type B’ for pipe NPS 10
NPS 8
Key
1 strip, 3 mm thickness 5 isolation pad, 6 mm thickness
2 clamp 6 machine bolt
a
...