... *40mm, 50*50mm, 60*60mm, 80*80mmRectangular pipe specification: 15*10, 20*10, 25*10, 25*13, 30*15, 32*16, 40*20 ... . Application:machine made industry,chemical industry,spin,shipping industry,architecture,food industry,etc. Certificate: HONOUR YADA stainless steel pipe: YADA Prime Product 100mm diamter stainless steel pipe