FprEN 10210-3

SLOVENSKI STANDARD
oSIST prEN 10210-3:2019
01-oktober-2019

Vroče izdelani votli konstrukcijski profili iz jekla - 3. del: Tehnični dobavni pogoji

Hot finished steel structural hollow sections - Part 3: Technical delivery conditions for

Warmgefertigte Hohlprofile für den Stahlbau - Teil 3: Technische Lieferbedingungen für

Profils creux de construction finis à chaud en aciers - Partie 3 : Conditions techniques de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

Profils creux de construction finis à chaud en aciers - Warmgefertigte Hohlprofile für den Stahlbau - Teil 3:

Partie 3 : Conditions techniques de livraison pour des Technische Lieferbedingungen für Anwendungen im

This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee

If this draft becomes a European Standard, 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.

This draft European Standard was established by CEN 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

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

Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without

© 2019 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 10210-3:2019 E

European foreword ....................................................................................................................................................... 3

1 Scope .................................................................................................................................................................... 4

2 Normative references .................................................................................................................................... 4

3 Terms, definitions and symbols ................................................................................................................. 6

4 Classification and designation .................................................................................................................... 8

5 Information to be obtained by the manufacturer ............................................................................ 10

6 Manufacturing process ............................................................................................................................... 11

7 Requirements ................................................................................................................................................ 12

8 Inspection ....................................................................................................................................................... 17

9 Frequency of testing and preparation of samples and test pieces ............................................. 20

10 Test methods ................................................................................................................................................. 22

11 Marking ............................................................................................................................................................ 24

Annex A (normative) Structural hollow sections of non-alloy quality steels — Chemical

composition and mechanical properties ............................................................................................. 25

Annex B (normative) Structural hollow sections of normalized/normalized rolled steels —

Chemical composition and mechanical properties .......................................................................... 27

Annex C (normative) Structural hollow sections of thermomechanical formed steels —

Chemical composition and mechanical properties .......................................................................... 30

Annex D (normative) Structural hollow sections of quenched and tempered steels —

Chemical composition and mechanical properties .......................................................................... 35

Annex E (normative) Structural hollow sections of steels with improved atmospheric

corrosion resistance — Chemical composition and mechanical properties .......................... 40

Annex F (normative) Location of samples and test pieces ......................................................................... 42

Annex G (informative) Hot finished hollow section production processes, manufacturing

routes and delivery conditions ............................................................................................................... 44

Bibliography ................................................................................................................................................................. 46

This document (prEN 10210-3:2019) has been prepared by Technical Committee CEN/TC 459 “ECISS -

European Committee for Iron and Steel Standardization ”, the secretariat of which is held by AFNOR.

— EN 10210-1, Hot finished steel structural hollow sections - Part 1: Technical delivery conditions

— EN 10210-2, Hot finished steel structural hollow sections - Part 2: Tolerances, dimensions and

— EN 10210-3, Hot finished steel structural hollow sections - Part 3: Technical delivery conditions for

It forms part of a series of standards on hollow sections together with EN 10219-1 to −3.

Through its subcommittee SC 3 “Structural steels other than reinforcements” (secretariat: DIN)

This part of this European Standard specifies technical delivery conditions for hot-finished seamless,

electric welded and submerged arc welded steel structural hollow sections for mechanical engineering

It applies to hollow sections formed hot, with or without subsequent heat treatment, or formed cold

with subsequent heat treatment above 580 °C to obtain equivalent mechanical properties to those

NOTE 1 The requirements for tolerances, dimensions and sectional properties are specified in EN 10210-2.

NOTE 2 The attention of users is drawn to the fact that whilst cold formed grades in EN 10219-3 can have

equivalent mechanical properties to hot-finished grades in EN 10210-3 the sectional properties of square and

NOTE 3 A range of material grades is specified in this document and the user are to select the grade most

appropriate to the intended use and service conditions. The grades and mechanical properties of the finished

hollow sections are generally comparable with those in EN 10025-2, EN 10025-3, EN 10025-4, EN 10025-5 and

NOTE 4 The requirements for seamless and welded steel structural hollow sections for use in offshore

NOTE 5 Spiral welded hollow sections are due to be used with caution in construction of dynamic behaviour

(fatigue stress) where up to now, there is insufficient knowledge of their performance.

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.

EN 1011-1, Welding - Recommendations for welding of metallic materials - Part 1: General guidance for

EN 1011-2, Welding - Recommendations for welding of metallic materials - Part 2: Arc welding of ferritic

EN 10160, Ultrasonic testing of steel flat product of thickness equal or greater than 6 mm (reflection

EN 10168, Steel products - Inspection documents - List of information and description

EN 10210-2, Hot finished structural steel hollow sections - Part 2: Tolerances, dimensions and sectional

CEN/TR 10261, Iron and steel - European standards for the determination of chemical composition

EN 10266, Steel tubes, fittings and structural hollow sections - Symbols and definitions of terms for use in

EN ISO 148-1, Metallic materials - Charpy pendulum impact test - Part 1: Test method (ISO 148-1)

EN ISO 377, Steel and steel products - Location and preparation of samples and test pieces for mechanical

EN ISO 643, Steels - Micrographic determination of the apparent grain size (ISO 643)

EN ISO 1461, Hot dip galvanized coatings on fabricated iron and steel articles - Specifications and test

EN ISO 6892-1, Metallic materials - Tensile testing - Part 1: Method of test at room temperature

EN ISO 9606-1, Qualification testing of welders - Fusion welding - Part 1: Steels (ISO 9606-1)

EN ISO 9712, Non-destructive testing - Qualification and certification of NDT personnel (ISO 9712)

EN ISO 10893-2, Non-destructive testing of steel tubes - Part 2: Automated eddy current testing of

seamless and welded (except submerged arc-welded) steel tubes for the detection of imperfections

EN ISO 10893-3, Non-destructive testing of steel tubes - Part 3: Automated full peripheral flux leakage

testing of seamless and welded (except submerged arc-welded) ferromagnetic steel tubes for the detection

EN ISO 10893-6, Non-destructive testing of steel tubes - Part 6: Radiographic testing of the weld seam of

EN ISO 10893-7, Non-destructive testing of steel tubes - Part 7: Digital radiographic testing of the weld

EN ISO 10893-8, Non-destructive testing of steel tubes - Part 8: Automated ultrasonic testing of seamless

EN ISO 10893-9, Non-destructive testing of steel tubes - Part 9: Automated ultrasonic testing for the

detection of laminar imperfections in strip/plate used for the manufacture of welded steel tubes

EN ISO 10893-10, Non-destructive testing of steel tubes - Part 10: Automated full peripheral ultrasonic

testing of seamless and welded (except submerged arc-welded) steel tubes for the detection of longitudinal

EN ISO 10893-11, Non-destructive testing of steel tubes - Part 11: Automated ultrasonic testing of the

weld seam of welded steel tubes for the detection of longitudinal and/or transverse imperfections

EN ISO 14284, Steel and iron - Sampling and preparation of samples for the determination of chemical

EN ISO 14713-2:2009, Zinc coatings - Guidelines and recommendations for the protection against

corrosion of iron and steel in structures - Part 2: Hot dip galvanizing (ISO 14713-2)

EN ISO 15607, Specification and qualification of welding procedures for metallic materials - General rules

EN ISO 15609-1, Specification and qualification of welding procedures for metallic materials - Welding

EN ISO 15614-1, Specification and qualification of welding procedures for metallic materials - Welding

procedure test - Part 1: Arc and gas welding of steels and arc welding of nickel and nickel alloys

ISO 11484, Steel products - Employer’s qualification system for non-destructive testing (NDT) personnel

For the purpose of this document the following terms and definitions apply in addition to or where

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

hollow sections formed hot, with or without subsequent heat treatment, or formed cold with

subsequent heat treatment above 580 °C to obtain equivalent metallurgical conditions to those

process where the forming to final shape of the welded hollow section is carried out at ambient

Note 1 to entry: Circular hollow sections produced from normalized strip with a normalized weld seam and

with a cold forming ratio of D/T ≥ 20 may be classified as hot-finished hollow sections.

rolling process in which the final deformation is carried out in a certain temperature range leading to a

material condition equivalent to that obtained after normalizing so that the specified values of the

simultaneously performed forming process and heat treatment in which the final deformation from

round to rectangular/square/elliptical hollow sections is carried out in a certain temperature range

above 580 °C leading to a material condition with certain properties which cannot be achieved or

Note 1 to entry: Thermomechanical rolling leading to the delivery condition M can include processes with an

increasing cooling rate with or without tempering including self-tempering but excluding direct quenching and

Note 2 to entry: In some publications, the word TMCP (Thermomechanical Control Process) is also used.

steel in which a certain number of alloying elements has been added in order to increase its resistance

to atmospheric corrosion, by forming an auto-protective oxide layer on the base metal under the

Note 1 to entry: Steel with improved atmospheric corrosion resistance is often called weathering steel.

Note 2 to entry: Additional information for the use of steel with improved atmospheric corrosion resistance is

— first quenching, where the steel is heated up above AC3 temperature and then rapidly cooled down

— afterwards tempering, during which the steel is heated up to a certain temperature to adjust the

steels with fine grain structure with an equivalent index of ferritic grain size ≥ 6

Note 1 to entry: For the determination of grain sizes except for +QT steels, see EN ISO 643.

application of a zinc coating by immersing the prepared strip or hollow section in a molten bath

4.1.1 Within the grades of non-alloy steels given in Annex A, four qualities JR, J0, J2 and K2 are

specified. These differ in respect of specified impact requirements, limits on values of various elements,

with particular reference to sulphur and phosphorus, and the inspection and testing requirements.

In accordance with the classification system in EN 10020, all steel grades in Annex A are non-alloy

4.1.2 Within the grades of steels given in Annex B, C and D seven qualities N, NL, M, ML, Q, QL and QL1

are specified. These differ in respect of the carbon, sulphur and phosphorus content, low temperature

In accordance with the classification system in EN 10020, steel grades S275NH, S275NLH, S355NH and

S355NLH are non-alloy quality steels and all other steel grades are alloy special steels.

4.1.3 Within the grades of steels given in Annex E, three qualities J0, J2 and K2 are specified. These

differ in respect of specified impact requirements and limits on values of various elements.

In accordance with the classification system in EN 10020, all steel grades in Annex E are alloy special

4.2.1 For the products covered by this document the steel names are allocated in accordance with

c) the indication of the minimum specified yield strength for thicknesses ≤ 16 mm expressed in MPa;

i) the capital letters JR for the qualities with specified impact properties at room

ii) the characters J0 for the qualities with specified impact properties at 0 °C; and

iii) the characters J2 or K2 for the qualities with specified impact properties at −20 °C; or

i) capital letter N to indicate normalized or normalized rolled with specified impact

ii) capital letter NL for qualities with specified impact properties at –50 °C; or

i) capital letter M to indicate thermomechanical rolled with specified impact properties at

ii) capital letter ML for qualities with specified impact properties at –50 °C; or

i) capital letter Q to indicate the quenched and tempered condition with specified impact

ii) capital letter QL or QL1 for qualities with specified impact properties at –40 or –50 °C; or

i) the capital letters JR for the qualities with specified impact properties at room

ii) the characters J0 for the qualities with specified impact properties at 0 °C;

iii) the characters J2 or K2 for the qualities with specified impact properties at −20 °C and

EXAMPLE 1 Hollow section made of structural steel (S) with a specified minimum yield strength for a

thickness not greater than 16 mm of 275 MPa, with a minimum impact energy value of 27 J at 0 °C (J0), hollow

EXAMPLE 2 Hollow section made of structural steel (S) with a specified minimum yield strength for a

thickness not greater than 16 mm of 355 MPa, normalized condition (N), with a minimum impact energy value of

The following information shall be contained in the order document at the time of enquiry and order:

d) the dimensions and the type of length, length range or length (see EN 10210-2);

A number of options are specified in parts 1 and 2 of this document. Those relevant to this part are

listed below with appropriate clause references. In the event that the purchaser does not indicate a

wish to implement any of these options at the time of enquiry and order, the hollow sections shall be

1.4 Cr, Cu, Mo, Ni, Ti and V cast analysis contents to be reported for non-alloy quality steels (see

1.8 The product shall have a chemical composition suitable for hot-dip-zinc coating (see 7.3.2);

1.9 Weld repairs to the body of structural steel hollow sections are permitted (see 7.4.4);

1.10 Full peripheral NDT (non-destructive testing) of circular tubes for imperfections - not possible

for elliptical, rectangular, square and SAW (submerged arc welded) hollow sections (see 7.5);

1.12 Inspection certificate 3.1 for steel grades S235JRH, S275J0H, S355J0H of Annex A and S355J0WH

100 t hot finished square hollow section in accordance with EN 10210-2 with specified outside

dimensions 100 mm × 100 mm and wall thickness of 8 mm of 12 m approximate length, grade S355J0H

according to EN 10210-1, verified impact properties at 0 °C (Option 1.7) and supplied with inspection

Structural hot finished hollow sections of non-alloy steels shall conform to the requirements of Annex A.

Structural hot finished hollow sections of normalized/normalized rolled, thermomechanical rolled and

quenched and tempered steels shall conform to Annexes B to D and steels with improved atmospheric

In addition, the general technical delivery requirements specified in EN 10021 shall apply.

6.2.1 The steel manufacturing process shall be at the discretion of the hollow section manufacturer

with the exception that the open hearth (Siemens-Martin) process shall not be employed.

6.2.2 The method of deoxidation shall be as specified in Tables A.1, B.1, C.1, D.1 and E.1.

The steels grades given in Annexes B to D shall have a ferritic grain size equal to or finer than 6 when

6.4.1 Structural hollow sections shall be manufactured by a seamless or by a welding process (see

informative Annex G). Welded sections manufactured by a continuous process shall not include the

welds used to join the lengths of strip prior to forming the hollow section, except as permitted in 10.4.3.

6.4.2 Electric welded hollow sections shall be supplied with the external weld bead trimmed to an

essentially flush condition. Trimming of the internal weld bead is at the discretion of the manufacturer

Option 1.1 Electric welded hollow sections shall be supplied with the internal weld bead trimmed, the

maximum height of the internal weld bead after trimming shall be agreed at the time of enquiry and

6.4.3 All NDT activities shall be carried out by qualified and competent level 1, 2 and/or 3 personnel

The qualification shall be in accordance with ISO 11484 or, at least, an equivalent to it.

It is recommended that the level 3 personnel be certified in accordance with EN ISO 9712 or, at least, an

The operating authorization issued by the employer shall be in accordance with a written procedure.

NDT operations shall be authorized by a level 3 NDT individual approved by the employer.

NOTE The definition of levels 1, 2 and 3 can be found in the appropriate standards, e.g. EN ISO 9712 and

— Qualities N and NL — full body normalized. Normalized includes normalized rolled and normalized

For steels of qualities JR, J0, J2, K2 of Annex A and steel of qualities N, NL of Annex B it may be necessary

for hollow sections to apply accelerated cooling after austenitizing to achieve the intended structure, or

liquid quenching and tempering to achieve the specified mechanical properties. The decision shall be

left to the discretion of the manufacturer, but shall be stated to the purchaser at the time of enquiry and

order. Hollow sections treated in such a way by quenching and tempering shall be designated by the

7.1.1 The chemical composition determined by the cast analysis and reported by the steel producer

The maximum carbon equivalent value (CEV) for all grades, based on the cast analyses, given in Tables

When determining the CEV, the following formula of the International Institute of Welding (IIW) shall

In addition to the cast analysis the following option can be specified by the purchaser at the time of

Option 1.3For products supplied with specific inspection and testing, a product analysis shall be

Deviations of the product analysis from the specified limits of the cast analysis shall be in accordance

7.1.2 For non-alloy steel products with specific inspection (3.1 or 3.2), the following option may be

Option 1.4 The recording on the inspection certificate of the Cr, Cu, Mo, Ni, Ti and V content (cast