外径：10〜457mm
标准：bs，astm，asme，en，din，gb和jis
材料：20＃，Q235和Q345
应用：石油，电力，气体冶金，造纸，化工，医疗设备，航空，锅炉热交换器，造船，建筑等
包装：标准出口

Outer diameters: 10 to 457mm
Standards: BS, ASTM, ASME, EN, DIN, GB and JIS
Materials: 20#, Q235 and Q345
Applications: petroleum, power, gas metallurgy, paper making, chemical, medical equipment, aviation, boiler heat, exchanger, shipbuilding, construction and more
Packaging: standard exporting