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热轧H型钢和剖分T型钢
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GBT 11263-2017
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标准编号: GB/T 11263-2017 (GB/T11263-2017)
中文名称: 热轧H型钢和剖分T型钢
英文名称: Hot rolled H and cut T section steel
行业: 国家标准 (推荐)
中标分类: H44
国际标准分类: 77.140.70
字数估计: 37,349
发布日期: 2017-05-31
实施日期: 2017-12-01
旧标准 (被替代): GB/T 11263-2010
引用标准: GB/T 222; GB/T 228.1; GB/T 229; GB/T 232; GB/T 700; GB/T 712; GB/T 714; GB/T 1591; GB/T 2101; GB/T 2975; GB/T 4171; GB/T 4336; GB/T 19879; GB/T 20066
提出机构: 中国钢铁工业协会
发布机构: 中华人民共和国国家质量监督检验检疫总局、中国国家标准化管理委员会
范围: 本标准规定了热轧H型钢和由热轧H型钢剖分的T型钢的订货内容、分类、代号、尺寸、外形、重量及允许偏差、技术要求、试验方法、检验规则、包装、标志、质量证明书。本标准适用于热轧H型钢(以下简称H型钢)和由热轧H型钢剖分的T型钢。
GB/T 11263-2017: 热轧H型钢和剖分T型钢
GB/T 11263-2017 英文名称: Hot rolled H and cut T section steel
1 范围
本标准规定了热轧H型钢和由热轧H型钢剖分的T型钢的订货内容、分类、代号、尺寸、外形、重量及允许偏差、技术要求、试验方法、检验规则、包装、标志、质量证明书。
本标准适用于热轧H型钢(以下简称H型钢)和由热轧H型钢剖分的T型钢。
2 规范性引用文件
下列文件对于本文件的应用是必不可少的。凡是注日期的引用文件,仅注日期的版本适用于本文
件。凡是不注日期的引用文件,其最新版本(包括所有的修改单)适用于本文件。
GB/T 222 钢的成品化学成分允许偏差
GB/T 228.1 金属材料 拉伸试验 第1部分:室温试验方法
GB/T 229 金属材料 夏比摆锤冲击试验方法
GB/T 232 金属材料 弯曲试验方法
GB/T 700 碳素结构钢
GB/T 712 船舶及海洋工程用结构钢
GB/T 714 桥梁用结构钢
GB/T 1591 低合金高强度结构钢
GB/T 2101 型钢验收、包装、标志及质量证明书的一般规定
GB/T 2975 钢及钢产品 力学性能试验取样位置及试样制备
GB/T 4171 耐候结构钢
GB/T 4336 碳素钢和中低合金钢 多元素含量的测定 火花放电原子发射光谱法(常规法)
GB/T 19879 建筑结构用钢板
GB/T 20066 钢和铁 化学成分测定用试样的取样和制样方法
3 订货内容
按本标准订货的合同应包含下列技术内容:
a) 产品名称及种类;
b) 牌号;
c) 标准编号;
d) 规格;
e) 交货长度;
f) 重量和数量。
4 分类、代号
4.1 H型钢分为四类,其代号如下:
宽翼缘H型钢 HW(W为 Wide英文字头);
中翼缘H型钢 HM(M为 Middle英文字头);
窄翼缘H型钢 HN(N为Narrow英文字头);
薄壁H型钢 HT(T为Thin英文字头)。
4.2 剖分T型钢分为三类,其代号如下:
宽翼缘剖分T型钢 TW(W为 Wide英文字头);
中翼缘剖分T型钢 TM(M为 Middle英文字头);
窄翼缘剖分T型钢 TN(N为Narrow英文字头)。
5 尺寸、外形、重量及允许偏差
5.1 尺寸及表示方法
5.1.1 H型钢和剖分T型钢的截面图示及标注符号如图1和图2所示。
5.1.2 H型钢和剖分T型钢的截面尺寸、截面面积、理论重量及截面特性参数应分别符合表1、表2的规定。根据需方要求,也可由供需双方协议供应附录A~附录D和附录G或其他参数要求的产品。工字钢与H型钢型号截面特性参数对比表见附录F。
5.1.3 H型钢和剖分T型钢的交货长度应在合同中注明,通常定尺长度为12000mm,根据需方要求
也可供应其他定尺长度产品。
5.2 尺寸、外形及允许偏差
5.2.1 H型钢和剖分T型钢尺寸、外形及允许偏差应分别符合表3和表4的规定。根据需方要求,H
型钢和剖分T型钢的尺寸、外形及允许偏差也可执行供需双方协议规定。
5.2.2 H型钢和剖分T型钢的切断面上不应有大于8mm的毛刺。
5.2.3 H型钢和剖分T型钢不应有明显的扭转。
5.3 重量及允许偏差
5.3.1 H型钢和剖分T型钢应按理论重量交货(理论重量按密度为7.85g/cm3计算)。经供需双方协
商并在合同中注明,亦可按实际重量交货。
5.3.2 H型钢和剖分T型钢交货重量允许偏差应符合表5的规定,重量偏差按式(1)计算。
5.4 规格表示方法
H型钢:H与高度H 值×宽度B 值×腹板厚度t1值×翼缘厚度t2值。
剖分T型钢:T与高度h值×宽度B 值×腹板厚度t1值×翼缘厚度t2值。
6 技术要求
6.1 交货状态
H型钢以热轧状态交货,剖分T型钢由热轧H型钢剖分而成。
6.2 钢的牌号和化学成分
6.2.1 H型钢和剖分T型钢的牌号和化学成分(熔炼分析),应符合GB/T 700、GB/T 712、GB/T 714、
GB/T 1591、GB/T 4171、GB/T 19879或其他标准的有关规定。经供需双方协商,并在合同中注明,也可按其他牌号和化学成分供货。
6.2.2 H型钢和剖分T型钢的成品化学成分允许偏差应符合GB/T 222的规定。
6.3 力学性能
H型钢和剖分T型钢的力学性能应符合GB/T 700、GB/T 712、GB/T 714、GB/T 1591、GB/T 4171、GB/T 19879或其他标准的有关规定。经供需双方协商,并在合同中注明,也可按其他力学性能、工艺性能指标供货。
6.4 表面质量
6.4.1 H型钢和剖分T型钢表面不允许有影响使用的裂缝、折叠、结疤、分层和夹杂。局部细小的裂纹、凹坑、凸起、麻点及刮痕等缺陷允许存在,但不应超出厚度尺寸允许偏差。H型钢和剖分T型钢表面的缺陷,允许用铲除、砂轮等机械方法修磨清理,并允许对缺陷进行焊补,焊补和焊补质量检验部分条款可参考附录A执行。清理、焊补应分别按6.4.2和6.4.3执行。
6.4.2 清理应符合如下规定:
a) H型钢和剖分T型钢清理后,截面尺寸应在允许偏差范围内。在征得用户同意的情况下,也
可根据不同的用途放宽此限制。
b) 清理处与原轧制表面的交界面应圆滑无棱角。清理宽度不得小于清理深度的5倍。
c) 清理后如果清理处深度不超过规定的尺寸公差范围时,可不经焊补直接交货。
6.4.3 焊补应符合如下规定:
如果缺陷经清理后,清理部位的尺寸超过允许负偏差,则可以对缺陷清理的部位进行金属焊补,但
应符合下述条件:
a) H型钢和剖分T型钢的表面缺陷在焊补前应采取铲除或砂轮打磨等机械方法完全除净,然后
进行堆焊修补。缺陷清理部位焊补后应进行修磨,并保持与原轧制面一致。
b) 焊补前所去除的缺陷部分深度,应小于被清理面厚度的30%。
150cm2。
d) 焊补应根据钢的牌号、采用适当的焊补工艺进行。
e) H型钢和剖分T型钢的焊接外缘不得存在咬边及焊瘤。加强焊缝的焊波高度应至少高于原
轧制表面1.5mm,用铲除或砂轮等机械方法清理加强焊缝焊波后,应保证与原轧制表面同一
高度。
f) 翼缘边缘上的缺陷可进行焊补,但焊补前从翼缘边缘向内测得的凹陷深度不应超过翼缘的公
称厚度,并且最大深度不超过12.5mm。
6.4.4 经供需双方协商,并在合同中注明,表面质量也可按YB/T 4427的规定执行。
7 试验方法
8 检验规则
8.1 检查和验收
8.1.1 H型钢和剖分T型钢的检查和验收由供方质量监督部门进行。
8.1.2 供方应保证交货的钢材符合本标准或合同的规定,需方有权对本标准或合同所规定的任一检验项目进行检查和验收。
8.2 组批规则
H型钢和剖分T型钢的组批按相应标准规定进行。
8.3 取样规则
H型钢的拉伸、弯曲和冲击试验的取样部位、取样方法按GB/T 2975的规定执行,剖分T型钢按
H型钢的规定进行取样。
H型钢的复验与判定规则应符合GB/T 2101的规定。
9 包装、标志及质量证明书
9.1 H型钢应采用轧或喷或贴等方式标志生产厂家名称或注册商标,标志应清晰明了。
9.2 H型钢和剖分T型钢可打包成捆交货也可单根交货。成捆交货的 H型钢和剖分T型钢应符合
表7规定。
9.3 除表7规定外,H型钢和剖分T型钢的包装、标志及质量证明书应符合GB/T 2101的规定。
GB/T 11263-2017
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 77.040.70
H 44
Replacing GB/T 11263-2010
Hot rolled H and cut T section steel
ISSUED ON. MAY 31, 2017
IMPLEMENTED ON. DECEMBER 1, 2017
Issued by. General Administration of Quality Supervision, Inspection and
Quarantine of the People's Republic of China;
Standardization Administration of the People's Republic of
China.
Table of Contents
Foreword ... 3
1 Scope ... 4
2 Normative references ... 4
3 Ordering content ... 5
4 Classification and codes ... 5
5 Dimensions, shapes, weights and tolerances ... 6
6 Technical requirements ... 17
8 Inspection rules ... 19
9 Packaging, marking and quality certification ... 20
Annex A (Informative) Sectional dimensions, sectional areas, theoretical
weights and sectional characteristics of hot rolled H section steel ... 21
Annex B (Informative) Sectional dimensions, sectional areas, theoretical
weights and sectional characteristics of hot rolled H section steel ... 26
Annex C (Informative) Sectional dimensions, sectional areas, theoretical
weights and sectional characteristics of hot rolled H section steel ... 29
Annex D (Informative) Sectional dimensions, sectional areas, theoretical
weights and sectional characteristics of hot rolled H section steel ... 32
Annex E (Informative) Supplementary detailed rules for defect welding
repair of hot rolled H and cut T section steel ... 35
Annex F (Informative) Comparison of types and sectional characteristic
parameters of international hot rolled I section steel and international hot rolled
H section steel ... 37
Annex G (Informative) Sectional dimensions, sectional areas, theoretical
weights and sectional characteristics of super-thick super-heavy H section steel
... 40
Bibliography ... 43
Foreword
This Standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This Standard replaces GB/T 11263-2010, Hot rolled H and cut T section steel.
Compared with GB/T 11263-2010, the major changes are as follows.
-- it changes the requirements for dimensions and tolerances of H section steel in
Table 3;
-- it changes the test items, sample quantities and test methods in Table 6;
-- it adjusts Annex A to Annex E and changes the content;
-- it adjusts Annex B to Annex G and modifies specifications;
-- it adds Annex A, Annex B, Annex C and Annex D.
This Standard was proposed by China Iron and Steel Association.
This Standard shall be under the jurisdiction of National Technical Committee 183 on
Steels of Standardization Administration of China (SAC/TC 183).
The drafting organizations of this Standard. Magang (Group) Holdings Co., Ltd.,
Shandong Iron and Steel Group Co., Ltd. Laiwu Controlled Company, China
Metallurgical Information and Standardization Institute, Hebei Jinxi Iron and Steel
Group Co., Ltd., Rizhao Steel Holding Group Co., Ltd., Central Research Institute of
Building and Construction Co., Ltd., Anshan Baode Iron and Steel Co., Ltd., Tianjin
Zhongzhong Technology and Engineering Co., Ltd.
The main drafters of this Standard. Wu Baoqiao, Wang Zhongxue, Wang Limin, Xi Tie,
Feng Chao, Zhao Yichen, Wei Zhenzhou, Wu Mingchao, Wang Hongxin, Chen
Yanliang, Liu Baoshi, Zhang Weibin, Zhao Xinhua, Zhang Baoju, Tian Xuebo, Cheng
Ding, Wang Yujie, Liu Chunying, Jiang Hongliang, Yang Yingdong.
The previous editions of the standard replaced by this Standard are as follows.
-- GB/T 11263-1998, GB/T 11263-2005, GB/T 11263-2010.
Hot rolled H and cut T section steel
1 Scope
This Standard specifies the ordering content, classification, codes, dimensions,
shapes, weights-tolerances, technical requirements, test methods, inspection rules,
from hot rolled H section steel.
This Standard applies to hot rolled H section steel (hereinafter referred to as H section
steel) and T section steel cut from hot rolled H section steel.
2 Normative references
The following referenced documents are indispensable for the application of this
document. For dated references, only the edition dated applies to this document. For
undated references, the latest edition of the referenced documents (including all
amendments) applies to this Standard.
GB/T 222, Permissible tolerances for chemical composition of steel products
temperature
GB/T 229, Metallic materials - Charpy pendulum impact test method
GB/T 232, Metallic materials – Bend test
GB/T 700, Carbon structural steels
GB/T 712, Ship and ocean engineering structural steel
GB/T 714, Structural steel for bridge
GB/T 1591, High strength low alloy structural steels
GB/T 2101, General requirement of acceptance, packaging, marking and
certification for section steel
mechanical testing
GB/T 4171, Atmospheric corrosion resisting structural steel
GB/T 4336, Carbon and low-alloy steel – Determination of multi-element contents
– Spark discharge atomic emission spectrometric method (routine method)
GB/T 19879, Steel plates for building structure
GB/T 20066, Steel and iron – sampling and preparation of samples for the
determination of chemical composition
3 Ordering content
The purchase contract based on this Standard shall include the following technical
a) product name and category;
b) designation;
c) standard number;
d) specifications;
e) delivery length;
f) weight and quantity;
g) other special requirements of the purchaser, such as special specification
requirements and special surface quality requirements.
4 Classification and codes
Wide flange H section steel HW (W is the initial of Wide);
Middle flange H section steel HM (M is the initial of Middle);
Narrow flange H section steel HN (N is the initial of Narrow);
Thin-wall H section steel HT (T is the initial of Thin).
4.2 Cut T section steel includes three categories, whose codes are as follows.
Wide flange cut T section steel TW (W is the initial of Wide);
Middle flange cut T section steel TM (M is the initial of Middle);
Narrow flange cut T section steel TN (N is the initial of Narrow).
6.4 Surface quality
to use, such as cracks, folds, scars, layers and inclusions. Local slight defects are
allowed, such as cracks, pits, bulges, hard spots and scratches, but they shall not
exceed the thickness tolerances. The defects of H and cut T section steel are allowed
to be removed using the mechanical methods such as chipping and grinding; the
defects are allowed to be repaired by welding; some clauses of welding repair and
welding repair quality inspection can be executed as specified in Annex A. The removal
and welding repair shall be executed as specified in 6.4.2 and 6.4.3.
6.4.2 Removal shall meet the following requirements.
a) after the removal of H section steel and cut T section steel, the sectional
restriction may also be extended for different purposes;
b) the surface of junction between the removed spot and the former rolled surface
shall be smooth without corners or edges. The width of removing shall not be
less than 5 times of the removing depth.
c) if the removing depth is not greater than the specified tolerance range after
removing, it can be delivered directly without welding repair.
6.4.3 Welding repair shall meet the following requirements.
If the dimensions of the removed spots exceed the allowable negative deviation after
the defects are removed, metal welding repair can be done for the spots of defect
a) The surface defects of H and cut T section steel shall be removed completely
before welding repair, using the mechanical methods such as chipping and sand
wheel grinding, and then surfacing repair is carried out. The spots of defect
removal shall be ground after welding repair and maintained consistent with the
former rolled surface.
b) The depth of the defect parts removed before welding repair shall be less than
30% of the thickness of the surface removed.
c) The total area of welding repair shall be less than 2% of the total surface area of
H section steel or cut T section steel and the maximum area of each welding
d) Welding repair shall be done using an appropriate welding repair process in
accordance with the designation of steel.
e) The welded outer edge of H and cut T section steel shall be free from undercut
and overlap. The height of weld ripples of reinforced weld seams shall be at least
1.5 mm above the former rolled surface; after reinforced weld seams and weld
Annex E
(Informative)
Supplementary detailed rules for defect welding repair of hot rolled H
and cut T section steel
E.1.1 Welding rods shall be dried before welding; the preheating temperature is
usually 350°C; the duration is 1 h. Use short-arc operation during welding repair;
narrow weld pass is preferred; the welding repair current is controlled at middle limit;
the base metal shall be kept dry during welding repair. The use of low-hydrogen
welding rods is recommended.
E.1.2 The welding repair operating environment shall be as specified in GB 50661.
E.1.3 Use appropriate methods, such as sand wheel grinding, to repair the spots of
welding repair, remove prominent metal and make the welding repair spots smooth
and flush with the rolled surface. Do not polish continuously at a fixed point to make
E.2 Welding repair quality inspection
E.2.1 Observe the appearance of the welding repair spots. the welding repair spots
and heat affected zones shall be smooth and pleasing to the eye, without surface
cracks, undercuts, visible pores, inclusions or other defects. In case of any surface
defect, it shall be removed carefully and completely before welding repair is done once
again.
E.2.2 Use measuring tools such as straight steel ruler to examine the smoothness
degree of welding repair surface; the welding repair spots shall be flush with the rolled
surface. The height of weld seams and weld ripples shall be the same as that of the
E.2.3 The inspection of the welding repair spots and heat affected zones shall be
carried out as specified in GB 50661.
E.2.4 The same location of the welding repair spots shall not be reworked for more
than twice.
E.2.5 Each welding repair spot shall be recorded in detail. The content usually
includes. designations, specifications and batch numbers of products to be repaired
by welding; types and locations of surface defects; whether preheating and slow
cooling measures are taken; designations and specifications of welding rods; quality
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