prEN ISO 13680
(Main)Oil and gas industries including lower carbon energy — Corrosion-resistant alloy seamless products for use as casing, tubing, coupling stock and accessory material — Technical delivery conditions
- Abstract
This document specifies the technical delivery conditions for corrosion-resistant alloy seamless products for casing, tubing, coupling stock and accessory material (including coupling stock and accessory material from bar) for two product specification levels:
PSL-1, which is the basis of this document;
PSL-2, which provides additional requirements for a product that is intended to be both corrosion and cracking resistant for the environments and qualification method specified in Annex G and in the ISO 15156 series or NACE MR0175.
This document contains no provisions relating to the connection of individual lengths of pipe. Demonstration of conformance to ISO 15156-3:2020 or NACE MR0175-2021 of material affected by end sizing, connection manufacture or welding operations is outside the scope of this document.
This document contains provisions relating to marking of tubing and casing after threading.
This document is applicable to the following five groups of products:
a) group 1, which is composed of stainless alloys with a martensitic or martensitic/ferritic structure;
b) group 2, which is composed of stainless alloys with a ferritic-austenitic structure, such as duplex and super-duplex stainless alloy;
c) group 3, which is composed of stainless alloys with an austenitic structure (iron base);
d) group 4, which is composed of nickel-based alloys with an austenitic structure (nickel base);
e) group 5, which is composed of bar only (Annex F) in age-hardened (AH) nickel-based alloys with austenitic structure.
- Status
- Not Published
- Publication Date
- 22-Nov-2027
- Current Stage
- 4060 - Closure of enquiry - Enquiry
- Start Date
- 24-Aug-2026
- Completion Date
- 24-Aug-2026
prEN ISO 13680 is a CEN draft for corrosion-resistant alloy seamless products used as casing, tubing, coupling stock and accessory material in the oil and gas industries including lower carbon energy. It specifies technical delivery conditions for manufacturers and purchasers of these products, with a basic level called PSL-1 and an additional PSL-2 level for products intended to be corrosion and cracking resistant in the environments covered by Annex G and the NACE MR0175/ISO 15156 series. The standard also covers marking after threading, surface condition, inspection, testing, and documentation.
What does prEN ISO 13680 specify?
prEN ISO 13680 specifies how corrosion-resistant alloy seamless products are to be supplied as casing, tubing, coupling stock and accessory material, including coupling stock and accessory material made from bar. The document is written for contractual supply: it tells the purchaser what to state, and tells the manufacturer what to control, test, mark and certify.
The scope covers these current product groups:
- group 1 - stainless alloys with martensitic or martensitic/ferritic structure
- group 2 - stainless alloys with ferritic-austenitic structure, including duplex and super-duplex
- group 3 - solid solution nickel-based alloys with an austenitic structure
- group 5 - bar only, in age-hardened (AH) nickel-based alloys with an austenitic structure, covered in Annex F
The standard excludes the connection of individual lengths of pipe, except for the clarifications in Annex J. It also places conformance work for material affected by end sizing, connection manufacture or welding outside its scope.
Document structure
| Annex | What it covers |
|---|---|
| Annex A | SI tables for composition, properties, dimensions, tests and marking data |
| Annex B | Figures in SI and USC units |
| Annex C | USC tables corresponding to Annex A |
| Annex D | Purchaser inspection |
| Annex E | Cleanliness requirements used when Charpy frequency is reduced |
| Annex F | Bar stock for couplings and tubular accessories |
| Annex G | PSL-2 requirements and marking |
| Annex H | Manufacturing procedure qualification test (MPQT) and new alloy / grade submissions |
| Annex I | Microstructure examples |
| Annex J | Threading and applying couplings |
| Annex K | Unit conversion procedures |
What are the key requirements of prEN ISO 13680?
prEN ISO 13680 sets requirements for order information, melting and product manufacture, material properties, testing, dimensions, surface condition, marking, documentation and facility capability. In practice, this means the buyer must specify the product clearly, and the producer must demonstrate that every length meets the agreed chemical, mechanical, dimensional and inspection requirements.
Ordering and product definition
Clause 5 requires the purchaser to state the minimum order information, such as quantity, product designation, reference to the standard, material category or grade, dimensions, tolerances, length requirements, inspection needs, threading provisions and packaging or storage requirements. For PSL-2, additional requirements have to be stated explicitly; if PSL-2 is not requested, PSL-1 applies.
This matters because the delivery conditions depend on the exact product form and service intent. A vague order can leave the supplier without enough information to select the right grade, test plan or marking.
Manufacturing route, process control and traceability
Clause 6 controls how the product is made. The document allows specified melting practices and requires the product manufacturing route, starting material and heat-treatment or cold-hardened condition to follow the listed process options. It also requires process control measures that avoid surface effects such as chromium depletion where heat treatment is part of manufacture.
The clause also limits end sizing, straightening and stress relieving by product group, and it requires validation for certain processes. Manufacturers must keep heat, re-melt ingot and lot identity until testing is complete, and each length must stay identifiable so test and inspection results can be linked back to that length.
Clause 6.7 introduces MPQT when it is specified, and Clause 6.8 links new alloy or grade updates to supporting evidence and the Annex H process. For a buyer, this is the clause that ties together qualification of a manufacturing route and confidence in repeat production.
Chemical, mechanical and integrity requirements
Clause 7 defines the core product requirements. Tables in Annex A and Annex C give the chemical composition limits for PSL-1 and PSL-2, and group 2 also uses pitting-resistance equivalent number (PREN). Room-temperature tensile properties, hardness limits and through-wall hardness variation are specified by tables, with PSL-2 having its own property tables.
Clause 7 also covers Charpy V-notch impact requirements, including low-temperature testing for group 2 at -46 °C (-50 °F), and flattening tests when specimen geometry prevents the required impact specimens from being machined. For groups 2 and 3, the flattening test becomes the fallback method when the pipe size does not permit suitable impact specimens.
The same clause also covers corrosion properties, microstructure requirements, surface condition and defects. In practice, this is where the material is checked for the properties that matter in service - strength, toughness, corrosion resistance and metallurgical soundness.
Dimensions, ends and fit
Clause 8 covers outside diameter, wall thickness, mass, length, tolerances, straightness, drift and product ends. Plain-end product ends must be burr-free, and plain-end casing or tubing has a defined out-of-squareness requirement. Standardized dimension ranges are listed in the annex tables, while other dimensions may be agreed in the purchase agreement.
This matters because casing and tubing must run, fit and be handled without damage or excessive variation. Drift and straightness checks help confirm that the product can be installed and used as intended.
Inspection, testing, NDE and PMI
Clause 9 defines the inspection and test system. Test type and frequency are given in the annex tables, and the clause covers chemical analysis, tensile testing, hardness testing, impact testing, flattening, pitting corrosion testing for group 2, microstructural examination, dimensional testing, drift testing, length, straightness, mass, visual inspection and non-destructive examination (NDE).
A key feature is positive material identification (PMI): all group 2 and group 3 lengths shall be PMI tested, and group 1 may be tested by agreement. The clause also requires 100 % coverage for full-body NDE of applicable products and sets qualification expectations for NDE personnel and procedures.
For buyers, this clause is the proof-of-conformance layer. For manufacturers, it defines the checks, records and reference methods needed before shipment.
Surface, marking, documents and facilities
Clauses 10 to 15 control how the product is finished, identified, documented and handled. Group 1 pipes are delivered with their internal surface pickled or grit blasted, while groups 2 and 3 require clean internal and external surfaces. Marking uses colour coding and paint or ink stencilling, with PSL-2 identified by L2 or L2A where agreed.
The document also requires suitable handling, packaging and storage, record retention, test certificates, and minimum facility capability for pipe mills, bar mills, processors and coupling or pup-joint manufacturers. These provisions matter because they protect product condition after testing and make sure subcontracted work remains under the manufacturer’s control.
What terms does prEN ISO 13680 define?
- CRA - corrosion-resistant alloy, meaning an alloy intended to resist general corrosion, localized corrosion and/or environmental cracking in service environments that attack carbon and low-alloy steels.
- PSL - product specification level; PSL-1 is the basis of the document, while PSL-2 adds extra requirements for corrosion and cracking resistance.
- CH - cold-hardened, meaning the required mechanical properties are obtained by cold finishing without subsequent heat treatment.
- SA - solution-annealed, meaning the material has been solution treated to obtain the required metallurgical condition.
- QT - quenched and tempered, meaning the product has been heat treated after hot forming to achieve the specified properties.
- MPQT - manufacturing procedure qualification test, the qualification program used for a product range or a process change.
- PMI - positive material identification, a method used to confirm that the tested length matches the specified material category.
- PREN - pitting-resistance equivalent number, a composition-based indicator used for group 2 material.
Who uses prEN ISO 13680?
prEN ISO 13680 is used by manufacturers, purchasers, quality teams and inspectors involved in oil and gas tubular products and related accessory material. It is also used by pipe mills, bar mills, processors, coupling or pup-joint manufacturers and subcontractors that perform heat treatment, inspection, marking or finishing.
In practice, buyers use it to write the purchase agreement, quality managers use it to set acceptance and traceability rules, and production and laboratory staff use it to qualify the route, test the product and compile the certificates. NDE and PMI personnel use it for inspection procedures and acceptance decisions.
What changed in prEN ISO 13680 from the previous edition?
Compared with ISO 13680:2024, this draft consolidates former groups 3 and 4 into the current group 3 and removes group 4. The note in the scope also states that group 5 remains unchanged to avoid confusion with earlier editions.
Which standards are used with prEN ISO 13680?
- ISO 377 - sampling and preparation of test pieces for mechanical testing
- ISO 404 - general technical delivery requirements for steel products
- ISO 4885 - heat-treatment vocabulary used in the terminology section
- ISO 4948-1 and ISO 4948-2 - steel classification used in the CRA definition
- ISO 6508-1 and ISO 6508-2 - Rockwell hardness testing and machine verification
- ISO 6892-1 and ISO 6892-2 - tensile testing at room and elevated temperature
- ISO 8501-1 - visual cleanliness grading for grit blasting of group 1 pipes
- ISO 9712 - qualification and certification of NDT personnel
- ISO 15156 series / NACE MR0175 - the cracking-resistant service environment basis for PSL-2
- ASTM G48, Method A - pitting corrosion testing for group 2
- ASTM E1476 or API RP 578 - methods for PMI
- ASTM A380 - guidance for cleaning, descaling and passivation
- ISO 17781 and NORSOK M-650 - referenced in MPQT and manufacturing qualification context
- API Standard 6ACRA - referenced for group 5 marking and alloy or grade addition context
What does the prEN ISO 13680 document contain?
prEN ISO 13680 contains SI and USC tables for chemical composition, mechanical properties, tolerances, test frequencies, colour coding and product-specific acceptance criteria. It also contains formulas for impact and flattening requirements, and conversion procedures for unit systems.
The figures show straightness checks, impact specimen orientation, hardness indentation layout, colour-band position and NDE reference indicators. Annex I provides microstructure photo examples for groups 1, 2 and 3, which helps inspectors compare real microstructures with acceptable and unacceptable patterns.
The document also contains detailed test methods and acceptance criteria for chemistry, tensile testing, hardness, Charpy impact, flattening, pitting corrosion, microstructure, dimensional checks, drift, straightness, mass, visual inspection, NDE and PMI. In practice, it is a supply, inspection and certification standard for qualified seamless CRA products used in well and tubular applications.
Relations
- Effective Date
- 01-Apr-2026
Get Certified
Connect with accredited certification bodies for this standard
Element Materials Technology
Materials testing and product certification.
Inštitut za kovinske materiale in tehnologije
Institute of Metals and Technology. Materials testing, metallurgical analysis, NDT.
Sponsored listings
Frequently Asked Questions
prEN ISO 13680 is a draft published by the European Committee for Standardization (CEN). Its full title is "Oil and gas industries including lower carbon energy — Corrosion-resistant alloy seamless products for use as casing, tubing, coupling stock and accessory material — Technical delivery conditions". This standard covers: This document specifies the technical delivery conditions for corrosion-resistant alloy seamless products for casing, tubing, coupling stock and accessory material (including coupling stock and accessory material from bar) for two product specification levels: PSL-1, which is the basis of this document; PSL-2, which provides additional requirements for a product that is intended to be both corrosion and cracking resistant for the environments and qualification method specified in Annex G and in the ISO 15156 series or NACE MR0175. This document contains no provisions relating to the connection of individual lengths of pipe. Demonstration of conformance to ISO 15156-3:2020 or NACE MR0175-2021 of material affected by end sizing, connection manufacture or welding operations is outside the scope of this document. This document contains provisions relating to marking of tubing and casing after threading. This document is applicable to the following five groups of products: a) group 1, which is composed of stainless alloys with a martensitic or martensitic/ferritic structure; b) group 2, which is composed of stainless alloys with a ferritic-austenitic structure, such as duplex and super-duplex stainless alloy; c) group 3, which is composed of stainless alloys with an austenitic structure (iron base); d) group 4, which is composed of nickel-based alloys with an austenitic structure (nickel base); e) group 5, which is composed of bar only (Annex F) in age-hardened (AH) nickel-based alloys with austenitic structure.
This document specifies the technical delivery conditions for corrosion-resistant alloy seamless products for casing, tubing, coupling stock and accessory material (including coupling stock and accessory material from bar) for two product specification levels: PSL-1, which is the basis of this document; PSL-2, which provides additional requirements for a product that is intended to be both corrosion and cracking resistant for the environments and qualification method specified in Annex G and in the ISO 15156 series or NACE MR0175. This document contains no provisions relating to the connection of individual lengths of pipe. Demonstration of conformance to ISO 15156-3:2020 or NACE MR0175-2021 of material affected by end sizing, connection manufacture or welding operations is outside the scope of this document. This document contains provisions relating to marking of tubing and casing after threading. This document is applicable to the following five groups of products: a) group 1, which is composed of stainless alloys with a martensitic or martensitic/ferritic structure; b) group 2, which is composed of stainless alloys with a ferritic-austenitic structure, such as duplex and super-duplex stainless alloy; c) group 3, which is composed of stainless alloys with an austenitic structure (iron base); d) group 4, which is composed of nickel-based alloys with an austenitic structure (nickel base); e) group 5, which is composed of bar only (Annex F) in age-hardened (AH) nickel-based alloys with austenitic structure.
prEN ISO 13680 is classified under the following ICS (International Classification for Standards) categories: 77.140.75 - Steel pipes and tubes for specific use. The ICS classification helps identify the subject area and facilitates finding related standards.
prEN ISO 13680 has the following relationships with other standards: It is inter standard links to EN ISO 13680:2025. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
prEN ISO 13680 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
SLOVENSKI STANDARD
01-julij-2026
Naftna in plinska industrija, vključno z nizkoogljično energijo - Nevarjeni izdelki iz
korozijsko odpornih zlitin, ki se uporabljajo kot zaščitne, proizvodne in priključne
cevi ter pribor - Tehnični dobavni pogoji (ISO/DIS 13680:2026)
Oil and gas industries including lower carbon energy - Corrosion-resistant alloy seamless
products for use as casing, tubing, coupling stock and accessory material - Technical
delivery conditions (ISO/DIS 13680:2026)
Industries du pétrole et du gaz, y compris les énergies à faible teneur en carbone -
Produits sans soudure en acier allié résistant à la corrosion utilisés comme tubes de
cuvelage, tubes de production, tubes-ébauches pour manchons et matériau pour
accessoires - Conditions techniques de livraison (ISO/DIS 13680:2026)
Ta slovenski standard je istoveten z: prEN ISO 13680
ICS:
75.180.10 Oprema za raziskovanje, Exploratory, drilling and
vrtanje in odkopavanje extraction equipment
77.140.75 Jeklene cevi in cevni profili Steel pipes and tubes for
za posebne namene specific use
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
DRAFT
International
Standard
ISO/DIS 13680
ISO/TC 67/SC 5
Oil and gas industries including
Secretariat: JISC
lower carbon energy — Corrosion-
Voting begins on:
resistant alloy seamless products
2026-06-01
for use as casing, tubing, coupling
Voting terminates on:
stock and accessory material —
2026-08-24
Technical delivery conditions
Industries du pétrole et du gaz, y compris les énergies à faible
teneur en carbone — Produits sans soudure en acier allié
résistant à la corrosion utilisés comme tubes de cuvelage, tubes
de production, tubes-ébauches pour manchons et matériau pour
accessoires — Conditions techniques de livraison
ICS: 75.180.10; 77.140.75
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENTS AND APPROVAL. IT
IS THEREFORE SUBJECT TO CHANGE
AND MAY NOT BE REFERRED TO AS AN
INTERNATIONAL STANDARD UNTIL
PUBLISHED AS SUCH.
This document is circulated as received from the committee secretariat.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
ISO/CEN PARALLEL PROCESSING
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
NATIONAL REGULATIONS.
RECIPIENTS OF THIS DRAFT ARE INVITED
TO SUBMIT, WITH THEIR COMMENTS,
NOTIFICATION OF ANY RELEVANT PATENT
RIGHTS OF WHICH THEY ARE AWARE AND TO
PROVIDE SUPPORTING DOCUMENTATION.
Reference number
ISO/DIS 13680:2026(en)
DRAFT
ISO/DIS 13680:2026(en)
International
Standard
ISO/DIS 13680
ISO/TC 67/SC 5
Oil and gas industries including
Secretariat: JISC
lower carbon energy — Corrosion-
Voting begins on:
resistant alloy seamless products
for use as casing, tubing, coupling
Voting terminates on:
stock and accessory material —
Technical delivery conditions
Industries du pétrole et du gaz, y compris les énergies à faible
teneur en carbone — Produits sans soudure en acier allié
résistant à la corrosion utilisés comme tubes de cuvelage, tubes
de production, tubes-ébauches pour manchons et matériau pour
accessoires — Conditions techniques de livraison
ICS: 75.180.10; 77.140.75
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENTS AND APPROVAL. IT
IS THEREFORE SUBJECT TO CHANGE
AND MAY NOT BE REFERRED TO AS AN
INTERNATIONAL STANDARD UNTIL
PUBLISHED AS SUCH.
This document is circulated as received from the committee secretariat.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
© ISO 2026
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
STANDARDS MAY ON OCCASION HAVE TO
ISO/CEN PARALLEL PROCESSING
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
BE CONSIDERED IN THE LIGHT OF THEIR
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
or ISO’s member body in the country of the requester.
NATIONAL REGULATIONS.
ISO copyright office
RECIPIENTS OF THIS DRAFT ARE INVITED
CP 401 • Ch. de Blandonnet 8
TO SUBMIT, WITH THEIR COMMENTS,
CH-1214 Vernier, Geneva
NOTIFICATION OF ANY RELEVANT PATENT
Phone: +41 22 749 01 11
RIGHTS OF WHICH THEY ARE AWARE AND TO
PROVIDE SUPPORTING DOCUMENTATION.
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland Reference number
ISO/DIS 13680:2026(en)
ii
ISO/DIS 13680:2026(en)
Contents Page
Foreword .vii
1 Scope . 1
2 Normative references . 1
3 Terms, definitions, abbreviated terms and symbols . 4
3.1 Terms and definitions .4
3.2 Abbreviated terms .7
3.3 Symbols .8
4 General . 8
4.1 Dual normative references .8
4.2 Units of measurement .8
5 Information supplied by the purchaser . 9
6 Manufacturing process .11
6.1 Melting practices .11
6.2 Product manufacturing process .11
6.3 Pipe end sizing .11
6.4 Straightening . . 12
6.5 Processes requiring validation . 12
6.6 Traceability . 12
6.7 Manufacturing procedure qualification test . 13
6.8 Process for update of alloys and/or grades . 13
7 Material requirements .13
7.1 Chemical composition . 13
7.2 Tensile properties . 13
7.3 Hardness properties . 13
7.4 Charpy V-notch test properties — General requirements .14
7.4.1 Test temperature .14
7.4.2 Evaluation of test results .14
7.4.3 Critical thickness .14
7.4.4 Specimen size, orientation and hierarchy . .14
7.4.5 Alternative size impact test specimens . 15
7.4.6 Sub-size test specimens . 15
7.5 Charpy V-notch — Absorbed energy requirements for coupling stock and accessory
material —Group 1, cold-hardened group 2 and group 3 . 15
7.5.1 General . 15
7.5.2 Requirements for group 1, cold-hardened group 2 and group 3 . 15
7.6 Charpy V-notch — Absorbed energy requirements for pipe — Group 1, cold-hardened
group 2 and group 3 . . .16
7.7 Charpy V-notch — Absorbed energy requirements at low temperature — Group 2 .17
7.8 Flattening requirements for groups 2 and 3.17
7.9 Corrosion properties .17
7.9.1 General .17
7.9.2 Pitting corrosion properties for group 2 .18
7.10 Microstructure properties . .18
7.10.1 Group 1 .18
7.10.2 Group 2 .18
7.10.3 Group 3 .18
7.11 Surface condition .18
7.12 Defects .19
7.12.1 Pipe .19
7.12.2 Coupling stock and accessory material .19
7.12.3 Process control plan .19
8 Dimensions, masses and tolerances . . 19
iii
ISO/DIS 13680:2026(en)
8.1 Outside diameter, wall thickness and mass.19
8.2 Length . 20
8.3 Tolerances . 20
8.3.1 Tolerance on outside diameter, wall thickness and mass . 20
8.3.2 Straightness . 20
8.3.3 Drift requirements . 20
8.4 Product ends . 20
9 Inspection and testing .21
9.1 Test equipment .21
9.2 Type and frequency of tests .21
9.3 Testing of chemical composition .21
9.3.1 Chemical analysis .21
9.3.2 Test method .21
9.3.3 Recheck of Product Analyses . 22
9.3.4 Chromium depletion test — Groups 2 and 3 . 22
9.4 Testing of mechanical characteristics . 22
9.4.1 Test lot . 22
9.4.2 Selection and preparation of samples and test pieces . 23
9.5 Tensile test . 23
9.5.1 Orientation and size of test pieces . 23
9.5.2 Test method . 23
9.5.3 Invalidation of test . 23
9.5.4 Retest . 23
9.6 Hardness test . 23
9.6.1 Test pieces . 23
9.6.2 Test method .24
9.6.3 Invalidation of tests . 25
9.6.4 Periodic checks of hardness-testing machines . 25
9.6.5 Verification of hardness-testing machines and indenters . 25
9.6.6 Retests . 26
9.7 Impact test . 26
9.7.1 Test pieces . 26
9.7.2 Frequency of testing.27
9.7.3 Impact test method .27
9.7.4 Impact test retest . 28
9.7.5 Invalidation of tests . 28
9.8 Flattening test for groups 2 and 3 . 28
9.8.1 Test pieces . 28
9.8.2 Frequency of testing. 28
9.8.3 Flattening test method . 28
9.8.4 Flattening test retest . 28
9.8.5 Invalidation of tests . 29
9.9 Pitting corrosion test for group 2 . 29
9.10 Microstructural examination . 29
9.10.1 Test pieces . 29
9.10.2 Test method . 30
9.10.3 Retest . 30
9.11 Dimensional testing . 30
9.11.1 General . 30
9.11.2 Outside diameter .31
9.11.3 Wall thickness at end of products .31
9.11.4 Wall thickness of product body .31
9.12 Drift test .32
9.12.1 Non-upset and external upset pipe .32
9.12.2 Internal upset pipe .32
9.12.3 Drift mandrel coating .32
9.13 Length .32
9.14 Straightness .32
iv
ISO/DIS 13680:2026(en)
9.15 Mass determination . 33
9.16 Visual inspection . 33
9.16.1 General . 33
9.16.2 Pipe body, coupling stock and accessory material . 34
9.16.3 Pipe ends . 34
9.16.4 Disposition . 34
9.17 Non-destructive examination . 34
9.17.1 General . 34
9.17.2 NDE personnel . 35
9.17.3 Products . 35
9.17.4 Pup joints . 35
9.17.5 Untested ends . . 35
9.17.6 Upset ends . 35
9.17.7 Reference standards . 36
9.17.8 NDE system capability records . 36
9.17.9 All product group 1 .37
9.17.10 Full-body NDE of product — Groups 2 and 3 .37
9.17.11 Pipe, coupling stock and accessory material requiring further evaluation .37
9.17.12 Evaluation of indications (prove-up) .37
9.17.13 Disposition of pipe containing defects . . 38
9.17.14 Disposition of coupling stock and accessory material containing defects . 39
9.18 Positive material identification . 39
10 Surface treatment .40
10.1 Group 1 . 40
10.2 Groups 2 and 3 . 40
11 Marking . . 41
11.1 General .41
11.2 Colour-code identification .41
11.3 Marking content and sequence .41
12 Surface protection — Group 1 .42
13 Documents .42
13.1 Electronic media .42
13.2 Retention of records .42
13.3 Test certificates . .43
14 Handling, packaging and storage .44
14.1 General . 44
14.2 Handling . 44
14.3 Packaging . 44
14.3.1 General . 44
14.3.2 Identification . 44
14.4 Storage . 44
15 Minimum Facility Requirements for Manufacturers .45
15.1 Pipe mill .45
15.2 Bar mill .45
15.3 Processor .45
15.4 Coupling or Pup-joint Manufacturer .45
15.5 Subcontractor .45
Annex A (normative) Tables in SI units.46
Annex B (normative) Figures in SI (USC) units .70
Annex C (normative) Tables in USC units . .75
Annex D (normative) Purchaser inspection .98
Annex E (normative) Cleanliness requirements .99
Annex F (normative) Bar product .101
v
ISO/DIS 13680:2026(en)
Annex G (normative) Product specification level 2 (PSL-2) .117
Annex H (normative) Standardized manufacturing procedure qualification test .119
Annex I (informative) Photographic examples of microstructures, groups 1, 2 and 3 . 124
Annex J (normative) Provisions for Threading and Applying Couplings .130
Annex K (informative) Procedures Used to Convert from SI Units to USC Units.133
Bibliography .137
vi
ISO/DIS 13680:2026(en)
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 document 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).
ISO draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed patent
rights in respect thereof. As of the date of publication of this document, ISO had not received notice of (a)
patent(s) which may be required to implement this document. However, implementers are cautioned that
this may not represent the latest information, which may be obtained from the patent database available at
www.iso.org/patents. ISO shall not be held responsible for identifying any or all such patent rights.
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, Oil and gas industries including lower carbon
energy, Subcommittee SC 5, Casing, tubing and drill pipe.
This sixth edition cancels and replaces the fifth edition (ISO 13680:2024), which has been technically
revised.
The main changes are as follows:
— addition of Annex J on provisions for threading and applying couplings
— addition of Annex K on procedures used to convert from SI units to USC units
— consolidation of former groups 3 and 4 into a unique group 3
— removal of 13-1-0 category and 13-5-2 grade 80; addition of 27-34-4 category; addition of 13-5-2 grade
110 PSL-2
— clarification of stress-relieving and drift requirements
— clarification of straightening, MPQT requirements, lot size, surface hardness testing and PMI for bars
— addition of mandatory Charpy V-Notch at −46 °C (−50 °F) and pitting corrosion testing for group 2
— addition of retest provision on hardness variation
— addition of semi-automated or automated methods for diameter and straightness measurement,
clarification of capability records for Automatic Machine vision system
— addition of minimum facility requirements for manufacturers
— addition of chemical composition ranges for PSL-1 tubular product
— review of microscopic cleanliness requirements and acceptance limits
— improvement of Annex H, including addition of anisotropy characterization testing
vii
ISO/DIS 13680:2026(en)
— addition of photographic examples for group 1 in Annex I.
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.
viii
DRAFT International Standard ISO/DIS 13680:2026(en)
Oil and gas industries including lower carbon energy —
Corrosion-resistant alloy seamless products for use as casing,
tubing, coupling stock and accessory material — Technical
delivery conditions
WARNING — It is the purchaser's responsibility to specify the product specification level (PSL),
corrosion-resistant alloy (CRA) group, category, grade, delivery conditions and any other requirement
in addition to those specified herewith to ensure that the product is adequate for the intended
service environment. The NACE MR0175/ISO 15156 series should be applied when making specific
requirements for H S-containing environments; see Annex G. It is the product user's responsibility
to ensure that the product is suitable for the intended application with respect to all environmental
degradation threats during both normal operation and system upsets. Not all PSL-1 categories and
grades can be made cracking resistant in accordance with the NACE MR0175/ISO 15156 series and
are, therefore, not included in PSL-2.
1 Scope
This document specifies the technical delivery conditions for corrosion-resistant alloy seamless products
for casing, tubing, coupling stock and accessory material (including coupling stock and accessory material
from bar) for two product specification levels:
— PSL-1, which is the basis of this document;
— PSL-2, which provides additional requirements for a product that is intended to be both corrosion and
cracking resistant for the environments and qualification method specified in Annex G and in the NACE
MR0175/ISO 15156 series.
This document contains no provisions relating to the connection of individual lengths of pipe, except what is
included in Annex J. Demonstration of conformance to NACE MR0175/ISO 15156 series of material affected
by end sizing, connection manufacture or welding operations is outside the scope of this document.
This document is applicable to the following four groups of products:
a) group 1, which is composed of stainless alloys with a martensi
...