JINXI /TIANZHU/BAODE/RIZHAO/MASTEEL/LAIWU STEEL 型号 ASTM Carbon Structural Steel W and HP Shapes 加工服务 折弯, 焊接, 冲孔, 切割 Product name A992 W18x71 W10x49 W10x54 Structural Steel W Shapes H section Beam Material SS400/SS540/S235/S275/S355/Q235/Q345/A36/A572/A992 Standard JIS /...