Stainless steel pipe and tube(square) 1)ASTM/ASME,GB,DIN,JIS,T14975,ETC ... 3)Thickness:0.5-40mm 4)5t Stainless steel pipe and tube(square)1)ASTM/ASME,GB,DIN,JIS,T14975,ETC ... so on. Seamless stainless tube... BStainless steel tube is a hollow circular strip steel, widely used in petroleum, chemical, ... healthy and rapid development of China's iron and steel industry. If you are interest in these product pls ...