镀锌钢管(焊接钢管)管材外径和壁厚一览表.doc

.管材外径和壁厚一览表一、 镀锌钢管（焊接钢管）：公称口径外径普通钢管加厚钢管mmin公称尺寸(mm)允许偏差壁厚理论重量(kg/m)壁厚理论重量(kg/m)公称尺寸(mm)允许偏差(%)公称尺寸(mm)允许偏差(%)61/810.0+0.05mm2.00+12-150.392.50+12-150.4681/413.52.250.622.750.73103/817.02.250.822.750.97151/221.32.751.263.251.45203/426.82.751.633.52.0125133.53.252.424.002.913211/442.33.253.134.003.784011/248.0+1%3.503.844.