... A, B); A106(B, C); A178... composition (%):Standard Steel grade CSiMnP≤S≤Cu≤Ni≤Cr≤GB/T 8162100.07 ... Remark: We can also provide customers with ERW pipe, steel pipe, line pipe, casing pipe, high pressure boiler ... , round pipe and tubing, suqare pipe, rectangular pipe, hollow section pipe, API pipe etc. Should you have any ... to Tianjn for business tour. Welded stainless steel tubes for machine structures