螺旋钢管钢种及其力学性能和化学成分表钢种力学性能化学成份屈服强度抗拉强度伸长率CSiMnSPMPakg/mm2MPakg/mm2min不大于不大于不大于Q215AQ215B21522335-41034-42310.09-0.150.030.25-0.550.0500.0450.045Q235AQ235BQ235CQ235D23524375-46038-47260.14-0.220.12-0.20≤0.18≤0.170.300.30-0.650.30-0.700.35-0.800.35-0.800.500.450.400.0350.0450.0450.0400.03516Mn(Q345B)34535510-60051.60220.12-0.200.20-0.551.2-1.60.0450.045X4228929.541342.10.28-1.250.0300.030X5235836.545546.40.30-1.350.0300.030X5638639.448949.90.26-1.350.0300.030X6041342.151752.70.26-1.350.0300.030X6544845.753054.00.26-1.400.0300.030X7048249.256557.60.26-1.400.0300.030L245245415210.261.150.0300.030L290290415210.281.250.0300.030L360360460190.31.250.0300.030
钢管表面涂防腐漆，两端带塑料保护器（管帽），按要求倒角（倒棱，倒坡口）.

包装：
木箱、木板、编织袋。