1.Stainless steel square/round tube/pipe 2.Steel material:201/202/301/304/430/316 3.OD:9. ... 9.5mm~114mm or as customer request.2.Stainless steel square tube. (1)304 stainless steel square tube. (2)Surface;400~600# or mirror ... .Usage:for door,furniture,railings,yacht,marine,towel dryer,window guards,ship building,heater exchange,container and so on. 304 Stainless steel round/square ...