9秒发货/有发票 梧三标准英文版 优质技术翻译  数据库收录:159759 最近更新:2020-03-11  
支付宝/对公账号 首页   询价  购买流程  英文样品 公司简介   购物车

GB/T 11263-2017

标准搜索结果: 'GB/T 11263-2017'
标准号码内文价格(元)第2步交付天数标准名称状态
GB/T 11263-2017 英文版 1000 购买 现货,9秒内自动发货PDF,有增值税发票。 热轧H型钢和剖分T型钢 有效

   
标准详细信息 GB/T 11263-2017; GB/T11263-2017; GBT 11263-2017; GBT11263-2017
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: 37,300
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
Hot rolled H and cut T section steel
ICS 77.140.70
H44
中华人民共和国国家标准
代替GB/T 11263-2010
热轧H型钢和剖分T型钢
2017-05-31发布
2017-12-01实施
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发布
前言
本标准按照GB/T 1.1-2009给出的规则编写。
本标准代替GB/T 11263-2010《热轧H型钢和剖分T型钢》,与GB/T 11263-2010相比主要变
化如下:
---修改了表3中H型钢的尺寸、外形允许偏差要求。
---修改了表6中检验项目、取样数量和试验方法。
---将附录A调整为附录E,并对内容进行了修改。
---将附录B调整为附录F。
---将附录C调整为附录G,并对规格进行了调整。
---增加了附录A、附录B、附录C、附录D。
本标准由中国钢铁工业协会提出。
本标准由全国钢标准化技术委员会(SAC/TC183)归口。
本标准起草单位:马钢(集团)控股有限公司、山东钢铁股份有限公司莱芜分公司、冶金工业信息标
准研究院、河北津西钢铁集团股份有限公司、日照钢铁控股集团有限公司、中冶建筑研究总院有限公司、
鞍山宝得钢铁有限公司、天津市中重科技工程有限公司。
本标准主要起草人:吴保桥、王中学、王丽敏、奚铁、冯超、赵一臣、魏振洲、吴明超、王洪新、陈延亮、
刘宝石、张卫斌、赵新华、张保菊、田学伯、程 鼎、王玉婕、刘春颖、姜鸿亮、杨应东。
本标准所代替标准的历次版本发布情况为:
---GB/T 11263-1998、GB/T 11263-2005、GB/T 11263-2010。
热轧H型钢和剖分T型钢
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;
g) 需方提出的其他特殊要求,如特殊规格要求、特殊表面质量要求等内容。
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。
说明:
H ---高度;
B ---宽度;
t1 ---腹板厚度;
t2---翼缘厚度;
r---圆角半径。
说明:
h ---高度;
B ---宽度;
t1 ---腹板厚度;
t2---翼缘厚度;
r---圆角半径;
Cx---重心。
图2 剖分T型钢截面图
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
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。
表1 H型钢截面尺寸、截面面积、理论重量及截面特性
类别
型号
(高度×宽度)
mm×mm
截面尺寸
H B t1 t2 r
截面
面积
cm2
理论
重量
kg/m
表面
m2/m
cm4
惯性半径
cm
截面模数
cm3
Ix Iy ix iy Wx Wy
HW
100×100
125×125
175×175
200×200
250×250
300×300
350×350
400×400
500×500
100 100 6 8 8 21.58 16.9 0.574 378 134 4.18 2.48 75.6 26.7
125 125 6.5 9 8 30.00 23.6 0.723 839 293 5.28 3.12 134 46.9
175 175 7.5 11 13 51.42 40.4 1.01 2900 984 7.50 4.37 331 112
200 200 8 12 13 63.53 49.9 1.16 4720 1600 8.61 5.02 472 160
*200 204 12 12 13 71.53 56.2 1.17 4980 1700 8.34 4.87 498 167
*244 252 11 11 13 81.31 63.8 1.45 8700 2940 10.3 6.01 713 233
250 250 9 14 13 91.43 71.8 1.46 10700 3650 10.8 6.31 860 292
*250 255 14 14 13 103.9 81.6 1.47 11400 3880 10.5 6.10 912 304
*294 302 12 12 13 106.3 83.5 1.75 16600 5510 12.5 7.20 1130 365
300 300 10 15 13 118.5 93.0 1.76 20200 6750 13.1 7.55 1350 450
*300 305 15 15 13 133.5 105 1.77 21300 7100 12.6 7.29 1420 466
*344 348 10 16 13 144.0 113 2.04 3280011200 15.1 8.83 1910 646
*344 354 16 16 13 164.7 129 2.05 3490011800 14.6 8.48 2030 669
350 350 12 19 13 171.9 135 2.05 3980013600 15.2 8.88 2280 776
*350 357 19 19 13 196.4 154 2.07 4230014400 14.7 8.57 2420 808
*388 402 15 15 22 178.5 140 2.32 4900016300 16.6 9.54 2520 809
*394 398 11 18 22 186.8 147 2.32 5610018900 17.3 10.1 2850 951
*394 405 18 18 22 214.4 168 2.33 5970020000 16.7 9.64 3030 985
400 400 13 21 22 218.7 172 2.34 6660022400 17.5 10.1 33301120
*400 408 21 21 22 250.7 197 2.35 7090023800 16.8 9.74 35401170
*428 407 20 35 22 360.7 283 2.4111900039400 18.2 10.4 55701930
*458 417 30 50 22 528.6 415 2.4918700060500 18.8 10.7 81702900
*498 432 45 70 22 770.1 604 2.6029800094400 19.7 11.1120004370
*492 465 15 20 22 258.0 202 2.7811700033500 21.3 11.4 47701440
*502 465 15 25 22 304.5 239 2.8014600041900 21.9 11.7 58101800
*502 470 20 25 22 329.6 259 2.8115100043300 21.4 11.5 60201840
表1(续)
类别
型号
mm×mm
截面尺寸
mm
H B t1 t2 r
截面
面积
cm2
理论
重量
表面
m2/m
惯性矩
cm4
惯性半径
cm
截面模数
cm3
Ix Iy ix iy Wx Wy
150×100
200×150
250×175
300×200
350×250
400×300
450×300
500×300
550×300
148 100 6 9 8 26.34 20.7 0.670 1000 150 6.16 2.38 135 30.1
194 150 6 9 8 38.10 29.9 0.962 2630 507 8.30 3.64 271 67.6
244 175 7 11 13 55.49 43.6 1.15 6040 984 10.4 4.21 495 112
294 200 8 12 13 71.05 55.8 1.35 11100 1600 12.5 4.74 756 160
*298 201 9 14 13 82.03 64.4 1.36 13100 1900 12.6 4.80 878 189
340 250 9 14 13 99.53 78.1 1.64 21200 3650 14.6 6.05 1250 292
390 300 10 16 13 133.3 105 1.94 37900 7200 16.9 7.35 1940 480
440 300 11 18 13 153.9 121 2.04 54700 8110 18.9 7.25 2490 540
*482 300 11 15 13 141.2 111 2.12 58300 6760 20.3 6.91 2420 450
*544 300 11 15 13 148.0 116 2.24 76400 6760 22.7 6.75 2810 450
*550 300 11 18 13 166.0 130 2.26 89800 8110 23.3 6.98 3270 540
*582 300 12 17 13 169.2 133 2.32 98900 7660 24.2 6.72 3400 511
588 300 12 20 13 187.2 147 2.331140009010 24.7 6.93 3890 601
*594 302 14 23 13 217.1 170 2.3513400010600 24.8 6.97 4500 700
*100×50 100 50 5 7 8 11.84 9.30 0.376 187 14.8 3.97 1.11 37.5 5.91
*125×60 125 60 6 8 8 16.68 13.1 0.464 409 29.1 4.95 1.32 65.4 9.71
150×75 150 75 5 7 8 17.84 14.0 0.576 666 49.5 6.10 1.66 88.8 13.2
HN
200×100
250×125
300×150
350×175
400×150
400×200
450×150
175 90 5 8 8 22.89 18.0 0.686 1210 97.5 7.25 2.06 138 21.7
*198 99 4.5 7 8 22.68 17.8 0.769 1540 113 8.24 2.23 156 22.9
*248 124 5 8 8 31.98 25.1 0.968 3450 255 10.4 2.82 278 41.1
250 125 6 9 8 36.96 29.0 0.974 3960 294 10.4 2.81 317 47.0
*298 149 5.5 8 13 40.80 32.0 1.16 6320 442 12.4 3.29 424 59.3
300 150 6.5 9 13 46.78 36.7 1.16 7210 508 12.4 3.29 481 67.7
*346 174 6 9 13 52.45 41.2 1.35 11000 791 14.5 3.88 638 91.0
350 175 7 11 13 62.91 49.4 1.36 13500 984 14.6 3.95 771 112
400 150 8 13 13 70.37 55.2 1.36 18600 734 16.3 3.22 929 97.8
*396 199 7 11 13 71.41 56.1 1.55 19800 1450 16.6 4.50 999 145
400 200 8 13 13 83.37 65.4 1.56 23500 1740 16.8 4.56 1170 174
450 151 8 14 13 77.49 60.8 1.47 25700 806 18.2 3.22 1140 107
表1(续)
类别
型号
(高度×宽度)
mm×mm
截面尺寸
mm
H B t1 t2 r
面积
cm2
理论
重量
kg/m
表面
m2/m
惯性矩
cm4
cm
截面模数
cm3
Ix Iy ix iy Wx Wy
HN
450×200
475×150
500×150
500×200
600×200
625×200
650×300
700×300
750×300
800×300
*446 199 8 12 13 82.97 65.1 1.65 28100 1580 18.4 4.36 1260 159
450 200 9 14 13 95.43 74.9 1.66 32900 1870 18.6 4.42 1460 187
*470 150 7 13 13 71.53 56.2 1.50 26200 733 19.1 3.20 1110 97.8
482 153.5 10.5 19 13 106.4 83.5 1.53 39600 1150 19.3 3.28 1640 150
*492 150 7 12 13 70.21 55.1 1.55 27500 677 19.8 3.10 1120 90.3
*500 152 9 16 13 92.21 72.4 1.57 37000 940 20.0 3.19 1480 124
504 153 10 18 13 103.3 81.1 1.58 41900 1080 20.1 3.23 1660 141
*496 199 9 14 13 99.29 77.9 1.75 40800 1840 20.3 4.30 1650 185
500 200 10 16 13 112.3 88.1 1.76 46800 2140 20.4 4.36 1870 214
*506 201 11 19 13 129.3 102 1.77 55500 2580 20.7 4.46 2190 257
*546 199 9 14 13 103.8 81.5 1.85 50800 1840 22.1 4.21 1860 185
550 200 10 16 13 117.3 92.0 1.86 58200 2140 22.3 4.27 2120 214
600 200 11 17 13 131.7 103 1.96 75600 2270 24.0 4.15 2520 227
*606 201 12 20 13 149.8 118 1.97 88300 2720 24.3 4.25 2910 270
*625198.5 13.5 17.5 13 150.6 118 1.99 88500 2300 24.2 3.90 2830 231
630 200 15 20 13 170.0 133 2.011010002690 24.4 3.97 3220 268
*638 202 17 24 13 198.7 156 2.031220003320 24.8 4.09 3820 329
*646 299 12 18 18 183.6 144 2.431310008030 26.7 6.61 4080 537
*650 300 13 20 18 202.1 159 2.441460009010 26.9 6.67 4500 601
*654 301 14 22 18 220.6 173 2.4516100010000 27.4 6.81 4930 666
*692 300 13 20 18 207.5 163 2.531680009020 28.5 6.59 4870 601
*734 299 12 16 18 182.7 143 2.611610007140 29.7 6.25 4390 478
*742 300 13 20 18 214.0 168 2.631970009020 30.4 6.49 5320 601
*750 300 13 24 18 238.0 187 2.6423100010800 31.1 6.74 6150 721
*758 303 16 28 18 284.8 224 2.6727600013000 31.1 6.75 7270 859
*792 300 14 22 18 239.5 188 2.732480009920 32.2 6.43 6270 661
800 300 14 26 18 263.5 207 2.7428600011700 33.0 6.66 7160 781
表1(续)
类别
型号
mm×mm
截面尺寸
mm
H B t1 t2 r
截面
面积
cm2
理论
重量
表面
m2/m
惯性矩
cm4
惯性半径
cm
截面模数
cm3
Ix Iy ix iy Wx Wy
850×300
900×300
1000×300
*834 298 14 19 18 227.5 179 2.802510008400 33.2 6.07 6020 564
*842 299 15 23 18 259.7 204 2.8229800010300 33.9 6.28 7080 687
*850 300 16 27 18 292.1 229 2.8434600012200 34.4 6.45 8140 812
*858 301 17 31 18 324.7 255 2.8639500014100 34.9 6.59 9210 939
*890 299 15 23 18 266.9 210 2.9233900010300 35.6 6.20 7610 687
900 300 16 28 18 305.8 240 2.9440400012600 36.4 6.42 8990 842
*970 297 16 21 18 276.0 217 3.073930009210 37.8 5.77 8110 620
*980 298 17 26 18 315.5 248 3.0947200011500 38.7 6.04 9630 772
*990 298 17 31 18 345.3 271 3.1154400013700 39.7 6.3011000 921
*1000300 19 36 18 395.1 310 3.1363400016300 40.1 6.41127001080
*1008302 21 40 18 439.3 345 3.1571200018400 40.3 6.47141001220
HT
100×50
100×100
125×60
150×75
150×100
150×150
175×90
175×175
200×100
200×150
200×200
95 48 3.2 4.5 8 7.620 5.98 0.362 115 8.39 3.88 1.04 24.2 3.49
96 99 4.5 6 8 16.20 12.7 0.565 272 97.2 4.09 2.44 56.7 19.6
118 58 3.2 4.5 8 9.250 7.26 0.448 218 14.7 4.85 1.26 37.0 5.08
120 59 4 5.5 8 11.39 8.94 0.454 271 19.0 4.87 1.29 45.2 6.43
119 123 4.5 6 8 20.12 15.8 0.707 532 186 5.14 3.04 89.5 30.3
145 73 3.2 4.5 8 11.47 9.00 0.562 416 29.3 6.01 1.59 57.3 8.02
147 74 4 5.5 8 14.12 11.1 0.568 516 37.3 6.04 1.62 70.2 10.1
139 97 3.2 4.5 8 13.43 10.6 0.646 476 68.6 5.94 2.25 68.4 14.1
142 99 4.5 6 8 18.27 14.3 0.657 654 97.2 5.98 2.30 92.1 19.6
144 148 5 7 8 27.76 21.8 0.856 1090 378 6.25 3.69 151 51.1
168 88 3.2 4.5 8 13.55 10.6 0.668 670 51.2 7.02 1.94 79.7 11.6
171 89 4 6 8 17.58 13.8 0.676 894 70.7 7.13 2.00 105 15.9
167 173 5 7 13 33.32 26.2 0.994 1780 605 7.30 4.26 213 69.9
172 175 6.5 9.5 13 44.64 35.0 1.01 2470 850 7.43 4.36 287 97.1
193 98 3.2 4.5 8 15.25 12.0 0.758 994 70.7 8.07 2.15 103 14.4
196 99 4 6 8 19.78 15.5 0.766 1320 97.2 8.18 2.21 135 19.6
188 149 4.5 6 8 26.34 20.7 0.949 1730 331 8.09 3.54 184 44.4
192 198 6 8 13 43.69 34.3 1.14 3060 1040 8.37 4.86 319 105
表1(续)
型号
(高度×宽度)
mm×mm
截面尺寸
mm
H B t1 t2 r
截面
面积
cm2
重量
kg/m
表面
m2/m
惯性矩
cm4
惯性半径
cm
截面模数
Ix Iy ix iy Wx Wy
HT
250×125
250×175
300×150
300×200
350×175
400×150
400×200

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
热轧 H型钢和剖分 T型钢
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,
packaging, marking and quality certificate of hot rolled H and cut T section steel cut
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 228.1, Metallic materials - Tensile testing - Part 1 . Method of test at room
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
GB/T 2975, Steel and steel products – Location and preparation of test pieces for
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
content.
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.
4.1 H section steel includes four categories, whose codes are as follows.
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).
6.4.1 The surface of H and cut T section steel shall be free from defects detrimental
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.
dimensions shall be within the tolerance range. With the user’s consent, the
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
removal, but shall meet the following criteria.
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
repair spot shall be less than 150 cm2.
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
E.1 Welding repair
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
the surface appear blue.
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
former rolled surface.
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
   
宁德梧三商贸有限公司 | 纳税人识别号:91350900MA32WE2Q2X | 营业执照:营业执照证书
点击联络我们 联系电邮郑文锐销售经理: Sales@gb-gbt.cn | Sales@ChineseStandard.net | 电话郑经理: 18059327808 | 增值税普通发票 / 增值税专用发票样品
对公开户银行:中国建设银行古田支行 | 账户名称:宁德梧三商贸有限公司 | 账号:35050168730700000955 对公银行账号证书
翻译支持:全资母公司新加坡场测亚洲公司(https://www.ChineseStandard.net 卖欧美后再内销)
网站备案许可:闽ICP备19012676号 http://www.beian.miit.gov.cn
隐私   ·  优质产品   ·  退款政策   ·  公平交易   ·  关于我们