GB 11263-2010 English

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ICS 77.140.70

H 44

National Standard of Peoples Republic of China

GB/T 11263-2010

Replaces GB/T 11263-2005

Hot-rolled H and cut T section steel

HT

Issued on 2010-12-23 Effective date: 2011-09-01

Issued by General Administration of Quality Supervision, Inspection and Quarantine of

Peoples Republic of China and China National Standardization Committee

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Peoples Republic of China

National Standard


GB/T 11263-2010

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First edition in July, 2011; first print in July, 2011

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GB/T 11263-2010

Foreword

This standard is drafted according to the rules provided in GB/T 1.1-2009.

This standard is non-equivalent with JIS G 3192-2008 Dimensions, mass and permissible variations of hot

rolled steel sections.

This standard replaces GB/T 11263-2005Hot-rolled H and cut T section steel.

Compared with GB/T 11263-2005, the main difference with this standard is as follows:

Add specifications of four series models of H450 150, H475 150, H500 150 and H625 200 as well

as H 298 201 9 14 of H300 200 series.

Add HP series and thickness dimension requirements.

--Adjust sectional area, theoretical weight and sectional characteristic parameters, etc.

--Add flange bending and flange leg side outer edge passivation requirements in the part of H-steel dimension

and allowable deviation of appearance.

Annex B updates newly added I-section steel and H-section steel models and cross-sectional characteristic

parameter comparison.

Add annex C to specify the size, cross-sectional area, theoretical weight and section properties of

super-thick and extra-weight H-section steel.

Compared with JIS G3192-2008, the main difference is a follows:

The H -section steel is divided into four categories of wide flange, middle flange, narrow flange and thin

wall.

Add 19 models of thin-wall type.

Add such 10 series models as H450 150, H475 150, H500 150, H550 200, H550 300, H625 200,

H650 300, H750 300, H850 300 and Hl000 300 and other 19 specifications.

Add part of cut T-section steel model series.

In table 3, "less than 5mm" column is added for thickness t1and the allowable deviation is 0.5mm; "less

than 5mm" column is added for thickness t2and the allowable deviation is 0.7mm; newly added flange leg

outer edge passivation requirements.

Add requirements for technical requirements, test methods, inspection rules, packaging, marking, quality

certificates.

Remove original Annex A, add defect repair welding of H-section steel and T-section steel in Annex A.

Add Annex C to specify the size, cross-sectional area, theoretical weight and section properties of agreed

super-thick and extra-weight H-section steel.

The Annex A, Annex B and Annex C are all informative annexes.

The standard is proposed by China Steel Industry Association.

This standard is under centralized management of National Steel Standardization Technical Committee

(SAC/TC 183).

This standard is drafted by: Maanshan Iron & Steel Co., Ltd., Research Institute of Metallurgical Industry

Information Standards, Laiwu Iron and Steel Group Co., Ltd., Hebei Jinxi Iron and Steel Group Co., Ltd.,

Jiangsu Huning Steel Machinery Co., Ltd., Rizhao Iron & Steel Co., Ltd., MCC Building Research Institute Co.,

Ltd., Anshan Baode Iron & Steel Co., Ltd.

The standard is mainly drafted by: Wu Baoqiao, Wang Limin, Xi Tie, Feng Chao, Du Chuanzhi, Zhao Yichen,

Zhang Baojun, Wu Mingchao, Liu Baoshi, Gao Jiling, Wang Hongxin, Wu Meizhuang, Liu Funing, Wang

Kefeng and Liu Tao

This standard successively replaces the following standards

GB/T 112631998,GB/T 112632005.

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GB/T 11263-2010


1 Scope

This standard specifies the order content, classification, code, size, shape, weight and tolerance, technical

requirements, test methods, inspection rules, packaging, labeling, quality certificate of hot-rolled H-section

steel and cut T-section steel made from hot-rolled H-section steel.

This standard applies to hot-rolled H-section steel (hereafter shorted for H-section steel) and cut T-section steel

made from H-section steel.

2.

Reference documents

The following standards contain provisions which, through reference in this text, constitute provisions of this

standard. For dated references, only the dated edition applies to this document. For all the undated references,

only the latest edition (including all the amendments) applies.

GB/T 222 Steel product chemical composition allowable deviation

GB/T 228.1 Metal materials Tensile test Part 1: Room temperature test method (GB/T228.12010,ISO

68921:2009,MOD)

GB/T 229 Metal material Charpy pendulum impact test method (GB/T229 2007,ISO 148-1:2006, MOD)

GB/T 232 Metal material Bending test method (GB/T 232-1999, eqv ISO 7438:1985(E)).

GB/T 700 Carbon structural steel

GB 712 Hull structural steel

GB/T 714 Bridge structural steel

GB/T 1591 Low-alloy high-strength structural steel

GB/T 2101 General provisions for inspection, packaging, marking and certification of section steel

GB/T 2975 Sampling location and sample preparation for steel and steel product mechanical property test

(GB/T 2975-2008, eqv ISO 377:1997)

GB/T 4171 Weather resistant structural steel

GB/T 4336 Carbon steel and low-alloy steel Spark source atomic emission spectrometry method (conventional

method)

GB/T 20066 Sampling method and sample preparation for determination of chemical composition in steel and

iron (GB/T 20066-2006, ISO 14284:1998, IDT)

3.

Ordering content

The contract of order subject to this standard shall include the following technical content:

a)Product name and classification;

b)Designation;

c)Number of this standard;

d)Specification;

e)Delivery length;

f)Weight and quantity;

g)

Other special requirements proposed by the purchaser, such as: special specification requirements and

special surface quality requirements, etc.

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GB/T 11263-2010

4.

Classification and code

4.1 H-section steel is divided into four categories and its code is as follows:

Wide flange H-section steel HW (W represents the initial letter of English word "Wide")

Middle flange H-section steel HM (M represents the initial letter of English word "Middle")

Narrow flange H-section steel HN (N represents the initial letter of English word "Narrow")

Thin-walled H-section steel HT (T represents the initial letter of English word "Thin").

4.2 Cut T-section steel comprises the following three types and their codes are as follows:

Wide flange cut T-section steel TW (W represents the initial letter of English word "Wide")

Middle flange cut T-section steel TM (M represents the initial letter of English word "Middle")

Narrow flange cut T-section steel TN (N represents the initial letter of English word "Narrow")

5.Dimension, appearance, weight and allowable deviation

5.1 Size and representation method

5.1.1 Refer to Fig.1 and Fig. 2 for the sectional drawing and marking symbols of H-section steel and cut

T-section steel.

HHeight; hHeight;

BWidth; BWidth;

t1Web thickness; t1Web thickness;

t2Flange thickness; t2Flange thickness;

rRadius of rounded angle rRadius of rounded angle

CxCenter of gravity.

Fig.1 H-section steel sectional drawing Fig.2 Cut T-sectional steel sectional drawing

5.1.2 Cross-section dimensions, cross-sectional area, theoretical weight and cross-section characteristic

parameters of H-section steel and cut T-steel shall comply with the specifications of Table 1 and Table 2

respectively. According to the requirements of purchaser and the agreement reached by supplier and purchaser,

the products that satisfy the requirements of Annex C or other parameters can be supplied.

5.1.3 The delivery length of H-section steel and cut T-section steel shall be marked in the contract and the

common specified length is 12m and products of other specified length can also be supplied according to the

requirements of purchaser.

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GB/T 11263-2010

Table 1 Size, cross-sectional area, theoretical weight and cross-sectional features of H-section steel

ClassModel(Height

width)/

(mm mm)

Cross-sectionaldimension/mm

Cross-sectional

area/cm2

Theoretical

weight/(kg/

m)

Moment ofinertia/cm

4

Diameter ofinertia/cm

Modulus of

cross

section/cm3

H B t1 t2 r Ix Iy iz iy Wx Wy

HW

100100 100 100 6 8 8 21.58 16.9 378 134 4.18 2.48 75.6 26.7

125125 125 125 6.5 9 8 30.00 23.6 839 293 5.28 3.12 134 46.9

150150 150 150 7 10 8 39.64 31.1 1620 563 6.39 3.76 216 75.1

175175 175 175 7.5 11 13 51.42 40.4 2900 984 7.50 4.37 331 112

200200200 200 8 12 13 63.53 49.9 4720 1600 8.61 5.02 472 160

*200 204 12 12 13 71.53 56.2 4980 1700 8.34 4.87 498 167

250250*244 252 11 11 13 81.31 63.8 8700 2940 10.3 6.01 713 233250 250 9 14 13 91.43 71.8 10700 3650 10.8 6.31 860 292

*250 255 14 14 13 103.9 81.6 11400 3880 10.5 6.10 912 304

300300

*294 302 12 12 13 106.3 83.5 16600 5510 12.5 7.20 1130 365

300 300 10 15 13 118.5 93.0 20200 6750 13.1 7.55 1350 450

*300 305 15 15 13 133.5 105 21300 7100 12.6 7.29 1420 433

350350

*338 351 13 13 13 133.3 105 27700 9380 14.4 8.38 1640 534

*344 348 10 16 13 144.0 113 32800 11220 15.1 8.83 1910 646

*344 354 16 16 13 164.7 129 34900 11800 14.6 8.48 2030 669

350 350 12 19 13 171.9 135 39800 13600 15.2 8.88 2280 776

*350 357 19 19 13 196.4 154 42300 14400 14.7 8.57 2420 808

400400

*388 402 15 15 22 178.5 140 49000 16300 16.6 9.54 2520 809

*394 398 11 18 22 186.8 147 56100 18900 17.3 10.1 2850 951

*394 405 18 18 22 214.4 168 59700 20000 16.7 9.64 3030 985

400 400 13 21 22 218.7 172 66600 22400 17.5 10.1 3330 1120

*400 408 21 21 22 250.7 197 70900 23800 16.8 9.74 3540 1170

*414 405 18 28 22 295.4 232 92800 3100 17.7 10.2 4480 1530

*428 407 20 35 22 360.7 283 11900 39400 18.2 10.4 5570 1930

*458 417 30 50 22 528.6 415 187000 60500 18.8 10.7 8170 2900

*498 432 45 70 22 770.1 604 298000 94400 19.7 11.1 12000 4370

500500

*492 465 45 20 22 258.0 202 117000 33500 21.3 11.4 4770 1440

*502 465 15 25 22 304.5 239 146000 41900 21.9 11.7 5810 1800

*502 470 20 25 22 329.6 239 151000 43300 21.4 11.5 6020 1840

HM

150150 148 100 6 9 8 26.34 20.7 1000 150 6.16 2.38 135 30.1

200150 194 150 6 9 8 38.10 29.9 2630 507 8.30 3.64 271 67.6

250175 244 175 7 11 13 55.49 43.6 6040 984 10.4 4.21 495 112

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Table 1 (Continued)

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Table 1 (Continued)

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Table 1 (continued)

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Table 2 Size, cross-sectional area, theoretical weight and cross-sectional features of cut T-section steel

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Table 2

(Continued)

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Table 2 (Continued)

5.2 Dimension, appearance and allowable deviation

5.2.1 The dimension, appearance and allowable deviation of H-section steel shall respectively comply with the

specifications of Table 3 and Table 4. According to the requirements of purchaser, the dimension, appearance

and allowable deviation of H-section steel and cut T-section steel can also be specified by agreement reached

by the purchaser and supplier.

5.2.2 The cut surface of H-section steel and cut T-section steel shall not have burr that exceeds 8mm.

5.3 H-section steel and cut T-section steel shall not have obvious torsion evidence.

5.3.1 H-section steel and cut T-section steel shall be delivered according to theoretical weight (theoretical

weight is calculated based on density of 7.85g/cm3). The supplier and purchaser shall negotiate and indicate the

weight in the contract and the delivery can also be made according to actual weight.

5.3.2 Allowable deviation of delivery weighty of H-section steel and cut T-section steel shall comply with the

specification of Table 5. The calculation method of allowable deviation is the difference between actual weight

and theoretical weight divided by theoretical weight, represented by percent rate.

5.4 Specification representation

H-section steel: H and height H value width B value web thickness t1value flange thickness t2value.

Such as: H5961991015

Cut T-section steel: T and height h value width B value web thickness t1value flange thickness t2value.

Such as: T207 405 18 28

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GB/T 11263-2010

Table 3 Size, appearance allowable deviation of H-section steel Unit is mm

Item Allowable deviation Diagrammatic presentation

Height H

(According tomodel)

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Table 3 (Continued) Unit: mm

Item Allowable deviation Diagrammatic presentation

Web

curvature W

Height (model)12m

1 2000 4 5 Allowable deviation of specified length

2 > 2000-4000 3 4 2

3 > 4000-5000 3 4 Not specified

4 > 5000-10000 5 6 Not specified

Note: The H-section steel with length exceeding 24m shall not be delivered in bundles.

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GB/T 11263-2010

Annex A

(Informative annex)

Criteria for repair welding of H-section steel and T-section steel

A.1 Repair welding

A.1.1 Before repair welding, it is essential to bake the welding rod dry and the pre-heating temperature is

generally 350 , lasting for 1 hour; short arc operation is generally adopted during repair welding and string

beading is preferable. The welding current is controlled by medium limit. During the welding process, the

matrix metal shall be kept dry and it is recommended to adopt low-hydrogen electrode.

A.1.2 For the product with yield strength level lower than Q345, the product shall be cooled down in stilled air

during and after the welding process.

A.1.3 For the product with yield strength level being Q345, when the operating ambient temperature of repair

welding is 5 , please add preheating measures before welding and slow -cooling measures after welding.

Pre-heat above 100 within the peripheral area of 100mm before welding and after welding, use covering

asbestos cloth or wooden dust for slow cooling.

A 1.4 For the products with intensity level above Q345 with such special performance requirements as fire

resistance and weather resistance, when the ambient temperature for repair welding is 5 , please add

preheating measures before welding and slow-cooling measures after welding. Pre-heat above 150 within the

peripheral area of 100mm before welding, the interlayer-temperature during welding is

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Annex B

(Informative annex)

Model and cross-sectional characteristic parameter comparison of I-section steel and H-section steel

According to the principle that the cross-section is approximately the same and the bending strength around X

axis is no lower than corresponding I-section steel, the related models of H-section steel in this standard and

related models of I-section steel in new national standard as well as performance parameter comparison (Refer

to B.1) are calculated for the reference of related staff when using H-section steel.

Table B.1 Table of comparison of characteristic parameter between I-section steel and H-section steel

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Table B.1 (continued)

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Annex C

(Informative annex)

Size, cross-sectional area, theoretical weight and section properties of super-thick and extra-weight

H-section steel

Table C.1 Size, cross-sectional area, theoretical weight and section properties of super-thick and

extra-weight H-section steel

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Table C.1 (Continued)

Documents

GB 11263-2010 English