JGT381-2012 建筑结构用冷成型焊接圆钢管
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注1.当钢管壁厚t>40mm或径厚比(D/)<20时,其力学性能指标需另行确定
注2:拉伸试样为标距5.65VS。的试样。S。为试件的标距。 注3:表中t为钢管壁厚,D为钢管公称外径,单位均为mm。厚度分组应按GB/T700、GB/T1591、GB/T1987 规定。
漆包线标准IG/T381—2012
6.3.2钢管成品的冲击功不应低于其 6.3.3必要时,可进行钢管成品厚度方向抗撕裂性能的检测,其性能指标不应低于其原料钢板相应标 准规定的限值。
6.4.1焊缝质量等级
6.4.2焊缝外观质量
6.4.2.1焊缝外观质量应符合GB50205中二级焊缝外观质量标准的规定。 5.4.2.2高频电阻焊钢管焊缝外毛刺应清除,剩余高度不应大于0.5mm。必要时,可进行钢管焊缝 内毛刺的清除,内毛刺清除后,剩余高度不应大于1.5mm。当壁厚不大于4mm时,清除内毛刺后刮槽 深度不应大于0.2mm;当壁厚大于4mm时,刮槽深度不应大于0.4mm。 6.4.2.3钢管熔透对接焊缝的余高允许偏差应小于0.15t(t为壁厚)且不应大于2.0mm
6.4.3熔透焊缝质量
准的规定,并应采用手工超声波探伤进行内部缺陷的检验。其内部缺陷分级和探伤方法应行 B/T11345的规定
钢管的外形尺寸及允许偏差应采用符合精度要求的量具逐根检验,检验项目与检验方法应符合 表3的规定
钢管外形尺寸及允许偏类
在自然光或等效光源下,距离0.5m目视检查表
7.3钢管成品力学性能
进行钢管成品力学性能和工艺性能检验时,其检验项目、取样方法与数量及检验方法应符合表4
表4钢管成品力学性能检验项目
焊缝外观和内在质量检验项目和检验方法应符合表5的规定。
表5钢管焊缝检验项目与检验方法
钢管成品需进行出厂检验,检验应由供方质量技术监督部门进行。
钢管应按批进行检验,每批应由同一牌号钢材、同一规格、同一制造工艺的钢管组成,每批钢管的重 量不应超过60t(管径D≤400mm时)或120t(管径D≤400mm时)。抽样数量和方法应符合表4 的规定。
钢管的复检与判定规则应符合GB/T2102的规定
订货合同或订货单应包括下列内容: a)本标准的标准号;
订货合同或订货单应包括下列内容: a)本标准的标准号:
b)产品名称、钢管的牌号和制造工艺; C) 钢管力学性能和工艺性能要求(屈服强度、抗拉强度、伸长率、屈强比、冲击吸收功、碳当量或焊 接裂纹敏感性指数以及厚度向性能等); d 尺寸规格; e)订货的数量(钢管的重量或长度)和对接接长要求。如要求定尺长度,应注明以mm为单位的 长度; 管端类型(平端、坡口端与坡口尺寸); g)附加性能要求或涂装要求; h)其他要求
10标志、包装和质量证明书
J标志、包装和质量证明书应符合GB/T2102的
A.1钢管冷弯后玩具标准,存在下列任何一种情况均应进行热处理: A.1.1碳素钢和含铬、钼合金钢管的弯制,其最大计算纤维伸长率超过该钢管标准所规定的最小伸长 率的50%时; 1.1.2需要保证冲击功性能的钢管,弯管后的最大计算纤维伸长率超过5%时。 A.2最大计算纤维伸长率8应按式(A.1)计算
JG/T381—2012附录B(规范性附录)钢管规格系列及截面特性B.1系列1钢管规格(整数系列)应符合表B.1的规定。表 B. 1系列1钢管规格外径D壁厚t/mmmm3101230901100200.....250.3003504004505005506006507007508008509009501000110012001300140015001600170018001.900200022002500280030009
JG/T381—2012B.2系列2钢管规格(按GB/T21835系列)应符合表B.2的规定。表B.2系列2钢管规格外径D壁厚t/mmmm3.21012.514.1617.52022.22256548. 360.376.188.9114.3139.7168.3219.1273.1323.9355.6406.44575086107118139141016106711181 219142216261829203222352540注:压弯工艺生产的钢管规格范围为直径406mm~1829mm,壁厚为6.4mm~50mm。10
B.3系列1钢管的规格尺寸与截面特性应符合表B.3的规定
表B.3系列1钢管规格与截面特性
JG/T381—2012表B.3(续)直径壁厚理论重量截面面积惯性矩惯性半径截面模量表面面积D/mmt/mmM/(kg/m)A/cmI/cmi/cmZ/cmS/(m"/m)18236.16300. 69106580.0118.833875.6420261.41332.84117124.3218.764259.075501.72822286.47364.74127423.4218.694633.5825323.68412.13142420.6918.595178.93687.89111. 9149 399.9321. 011646.668116. 80148, 7165 208.7520.942173.6310145.50185.2680696.0520.872689.8712174, 01221.5695866.2120.803195.5416230.44293.40125272.5420.664175, 7560018258.35328.95139517.3320.594650.581.88520286,07364.24153462.2520,535115.4122313.60399.28167111.5220.465 570.3825354,51451,38187 040. 3120.366234.6828394.98502.90206 327.4520.266877.5830421,71536.94218835.9520.197294,538126.66161.2783163.7322.712 558.8810157.83200.96102995.3022.643169.0912188.81240.40122452.7022.573767.7816250.17318,52160 263.9122.434931.2018280.55357, 21178 627.1122.365496.226502.04220310,73395.64196 634.8922.296050.3022340.72433.82214 291.8922.236593.6025385.34490.63240129.6922.127388.6128429.50546.86265203.8622.028160.1230458.70584.04281503.2621.958661.64136,53173, 83104 144, 8524,482 975.5710170, 16216.66129 065.4424. 413687.5812203.61259.24153550.1124.344 387.1514236.85301.57177 603.9824.275074.4070016269.90343.64201 232.1424.205 749. 492.19918302.74385.47224439.6224.136412.5620335.40427. 04247 231. 4624.067063.7622367.85468.36269612.6523.997703.2225416.16529.88302 425.3123.898640.7213
三层标准规范范本JG/T381—2012表B.3(续)直径壁厚理论重量截面面积惯性矩惯性半径截面模量表面面积D/mmt/mmM/(kg/m)A/cmI/cm*i/cmZ/cmS/(m/m)30680.66866.64918 581.6532.5619338.5632724,46922.41973 591.7732. 4920 496.6795036811.461033.191 081 398,5732.3522766.292.98540897.681142.961186298.4232.2224 974,.70451004.341 278.771313415.6232.0527650.8610244.15310.86381172.3335.027623.4512292.39372,28454660.9134.959 093.2214340.43433.45527251.4834.8810545.0316388.27494.36598951.3834,8111 979.0318 435.92555.03669767.9234.7413395.3620483.37615. 44739 708.3934. 6714 794. 1722530.62675.60808780.0534.6016175.60100025601.12765.38910 774.3134.5018215.493.14228671,19854,581010 854.2534.3920217.0930717, 65913.741076522.6134.3221530.4532763.91972.651141357.9734.2622827.1636855.851089.711268558.0034.1225 371.1640947.001205.761392510.5733.9827 850.21451059.831349.421542969.4133.8130859.39501171.421491,501688549.0033. 6533770.9812321.98409.96607144,7438. 4811039.0014 374,95477, 41704467.8238.4112808.5116427.73544.60800 707.5338.3414 558.3218480,31611.55895 871.9638.2716 288.5820532.69678.24989969.1338.2017999.4422584.87744.681083007.0538.1419 691. 0425662.78843.881220595.3138.0322192.64110028740.24942.501355845.0237. 9324651.733.45630791.631007.941444725.4737,.8626 267.7432842.831073.131532586.2737,.7927865.2036944.631202.751705280.2037.6531005,09401045.651331.361873989.0937.5234 072.53451170, 801490.722 079 365.3137.3537 806.64501294. 731648.502 278 731.0037.1841431.47551417.421804.722472 204.5937.0144949.1716
JG/T381—2012表B.3(续)直径壁厚理论重量截面面积惯性矩惯性半径截面模量表面面积D/mmt/mmM/(kg/m)A/cm1/cmi/cmZ/emS/(m/m)302197.342 797.7430 874 959. 09105.05205 833.06322342.252982.2532867269.71104, 98219115,13362631.483350.5136827534.06104.84245516.89402919.923717,7640755469.93104, 70271 703.13453279.364175,4245620196.53104.53304 134.64503637.574631.5050435029.00104.35336233.53553994.555086.0255200 309.65104.18368002.063000604350.295538.9659916379.62104,01399442.539.425654704.805 990.3464 583 578.89103.83430 557.19705058.076 440.1469202246.25103.66461348.31805760.937335,0478295334.50103.32521968.90906 458.858223.6687198 331.12102.97581322.211007151.849106.0095913904.00102.63639426.031107839.899982.06104 444702.19102.29696298.011208523.0110 851.84112793355.88101, 95751 955.71
....- 焊接标准 圆钢标准
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