低压流体输送用焊接钢管及镀锌钢管壁厚-m重量标准

('低压流体输送用焊接钢管及镀锌钢管〔GB3091、3092-93〕公称口径外径普通钢管加厚钢管〔mm〕〔in〕公称尺寸〔mm〕壁厚〔mm〕理论重量〔kg/m〕壁厚〔mm〕理论重量〔kg/m〕61/810.02.000.392.500.4681/413.52.250.622.750.73103/8172.250.822.750.97151/221.32.751.263.251.45203/426.82.751.633.502.0125133.53.252.424.002.913211/442.33.253.134.003.784011/248.03.503.844.254.5850260.03.504.884.506.166521/275.53.756.644.507.8880388.54.008.344.759.811004114.04.0010.855.0013.441255140.04.5015.045.5018.241506165.04.5017.815.5021.63注：1.公称口径表示近似的内径参考尺寸，它不等于外径减2倍壁厚之差，其外径决定于圆锥管螺纹的大径尺寸。2.钢管按管端形式，分不带螺纹和带螺纹两种；按外表情况，分焊接钢管〔不镀锌〕和镀锌焊接钢管两种。3.钢管的交货状态：以不带螺纹钢管交货，公称口径>10mm钢管也可带螺纹〔圆锥或圆柱管螺纹〕。4.焊接钢管的通常长度为4～10m,镀锌焊接钢管的通常长度为4～9m，镀锌后钢管重量按表载加3%～6%。普通碳素钢电线套管〔GB3640-88〕序号钢管公称口径钢管外径钢管壁厚理论重量〔kg/m〕钢管和管径接头螺纹〔mm〕每25.4mm牙数螺距钢管螺纹有效长度〔mm〕11312.701.600.438181.41112～1621615.881.600.581181.41112～1631919.051.800.766161.58816～2042525.401.801.048161.58816～2053231.751.801.329161.58818～2263838.101.801.611141.81422～2675150.802.002.407141.81424～2886463.52.503.760112.30932～3697676.203.205.761112.30932～36序号口径螺纹部位钢管或管接头牙形角55°圆柱管螺纹直径〔mm〕大径中径小径最小最大最小最大最小最大113钢管接头12.43012.80012.70013.15911.57111.89611.79612.25510.53410.99310.89311.352216钢管接头15.60615.97515.87516.33414.76415.07114.97115.43013.70914.16814.06814.527319钢管接头18.76419.15019.05019.53117.79518.13318.03318.51416.63517.11617.01617.497425钢管接头25.11425.50025.40025.88124.14524.48324.38324.86422.98523.46623.36623.847532钢管接头31.46431.85031.75032.23130.49530.83330.73331.21429.33529.81629.71630.197638钢管接头37.79538.20038.10038.60736.68337.03836.93837.44535.37035.87735.77736.284751钢管接头50.49550.90050.80051.30749.38349.73849.63850.14548.07048.57748.47748.984864钢管接头63.15563.60063.50064.06061.73462.12162.02162.58160.08360.64360.54361.103976钢管接头75.85576.30076.20076.76074.43474.82174.72175.28172.78373.34373.24373.803注：1.钢管通常长度为3～9m。2.交货时每根钢管带一个管接头，表中理论重量不计管接头。3．钢管外表分不镀锌、镀锌和其他涂层三种。',)