钢管重量、壁厚.doc

低压流体输送用(镀锌)焊接钢管产品规格中国国家标准GB/T3091-2001低压流体输送用（镀锌）焊接钢管GalvanizedweldedsteelpipetoGB/T3091-2001forlowpressureliquiddelivery镀锌管全称热镀锌焊接钢管，镀锌管是由未采取防腐锈措施的焊接（炉焊、电焊）钢管、无缝钢管或其它金属钢管等黑管，进行一定工艺的热浸镀锌，使其外层涂合镀锌层，起到长期不锈蚀加工后的钢管。现今一般黑管为电焊的焊接钢管。本公司镀锌管产品生产加工执行国家标准GB/T3091-2001标准：本标准适用于水、污水、燃气、空气、采暖蒸汽等低压流体输送用和其他结构用的热浸镀锌直缝焊接钢管。本公司镀锌钢管镀锌工艺先进，镀锌层均匀，内外表面光滑，无黑斑和气泡，并可根据需方要求，镀锌钢管表面能进行钝化处理。普通钢管俗称公称口径公称外径外径允许偏差普通钢管公称壁厚壁厚允许偏差4分1521.3±0.5mm2.8±12.5%6分2026.9±0.5mm2.8±12.5%1寸2533.7±0.5mm3.2±12.5%1.25寸3242.4±0.5mm3.5±12.5%1.5寸4048.3±0.5mm3.5±12.5%2寸5060.3±1.0%3.8±12.5%2.5寸6576.1±1.0%4.0±12.5%3寸8088.9±1.0%4.0±12.5%4寸100114.3±1.0%4.0±12.5%5寸125139.7±1.0%4.0±12.5%6寸150168.3±1.0%4.5±12.5%8寸200219.1±0.75%4.0-10.0±12.5%镀锌钢管的重量系数公称壁厚mm2.02.52.83.23.53.84.04.5系数c1.0641.0511.0451.0401.0361.0341.0321.028注：钢的牌号：Q215A；Q215B；Q235A；Q235B试验压力值/Mpa：D10.2-168.3mm为3Mpa；D177.8-323.9mm为5Mpa黑管和热浸镀锌焊接钢管美国试验材料协会标准（ASTMA53/A53M-1996）Blackandhot-dipgalvaniaed,weldedsteelpipetoASTMA53/A53M-1999公称尺寸外径(mm)壁厚(mm)重量级耐压码A级试验压力（MPa）黑管重量（kg/m）1/221.32.77STD404.831.273/426.72.87STD404.831.69133.43.38STD404.832.5011/442.23.56STD408.273.3911/248.33.68STD408.274.05260.33.91STD4015.865.4421/273.05.16STD4017.248.63388.95.49STD4015.3111.294114.36.02STD4013.1016.07壁厚允许偏差-12.5%镀锌管锌层平均重量≥550克/平方米STD为标准重量级成品长度允许偏差为+25毫米/0英国标准钢管BS1387-1985和管件标准BS1387-1985BritishStandardsforWeldedSteelPipe,orBS21forthreadedsteelpipe公称尺寸壁厚外径(mm)重量(黑管)kg/m平头螺纹DNmm最大最小参考值毫米英寸ABCABCABCABC每英寸扣数总长(毫米)103/81.82.32.917.117.417.416.7016.816.80.6700.8391.02198.8~11.4151/22.02.63.221.421.721.721.021.121.10.9471.211.441411.4~15.0203/42.32.63.226.927.227.226.426.626.61.381.561.871412.7~16.32512.63.24.033.834.234.233.233.433.41.982.412.941114.5~19.13211/42.63.24.042.542.942.941.942.142.12.543.103.801116.8~21.44011/22.93.24.048.448.848.847.848.048.03.233.574.381116.8~21.45022.93.64.560.260.860.859.659.859.84.085.036.191121.1~25.76521/23.23.64.576.076.676.675.275.475.45.716.437.93--8033.24.05.088.789.589.587.988.188.16.728.3710.3--10043.64.55.4113.9114.9114.9113.0113.3113.39.75