... :6-830mm 3)Thickness:0.5-40mm 4)5t Stainless steel pipe and tube(square)1)ASTM/ASME,GB,DIN,JIS,T14975 ... and so on. Seamless stainless tube... BStainless steel tube is a hollow circular strip steel, widely used in petroleum, chemical, medical treatment, food ... strength, twist, the weight is light, so it is widely used for manufacturing machinery parts and engineering structures C.seamless stainless ...