Stainless steel pipe and tube(square) 1)ASTM/ASME,GB,DIN,JIS ... .5-40mm 4)5t Stainless steel pipe and tube(square)1)ASTM/ASME,GB,DIN,JIS,T14975, ... South America, Europe and so on. Seamless stainless tube... BStainless steel tube is a hollow circular strip steel, widely used ... in petroleum, chemical, medical treatment, food, light industry, machinery ...