标准: ASTM A53钢管

无缝碳素钢与合金钢机械用管/Seamless carbon and Alloy Steel Mechanical Tubing

Application:适用于作受力及承压件，也可用于一般用途的蒸汽、水、气体及空气管线。For mechanical and pressure use,and also for transporting steam,water,gas and etc.

Size(mm):外径 O.D.: 6.0～323.0 壁厚 W.T.: 1～30 长度 L: max 12000

钢号及化学成分/Grade and Chemical Composition (%)钢级GradeC ≤M ≤P ≤S ≤Cu ≥Ni ≤Cr ≤Mo ≤V ≤

A0.250.950.050.0450.400.400.400.150.08

B0.301.200.050.0450.400.400.400.150.08

机械性能/Mechanical Properties：钢号Grade抗拉强度Rm Mpa Tensile Strength屈服点Mpa Yield Point伸长率A%Elongation交货状态 Delivery Condition

A≥330≥20520Annealed

B≥415≥24020Annealed

尺寸偏差/Dimension Tolerances：钢管类型 Pipe Type钢管尺寸 Pipe Sizes允许偏差 Tolerances

冷拔管 Cold Drawn外径 OD≤48.3mm±0.40mm

壁厚 WT≥60.3mm±1%mm