Stainlss steel welded pipes for archite cture.furnishing machinery as well as liguid and as transort. 1.Stainless steel square/round tube 2.Steel material:201/202/301/304/430/316 3.Size: 17X17~50X50 or as customer request1. Standard: ASTM, GB, DIN, JIS2. Grade: 204,301,304and so on3. Thickness: 0.24mm to 3.0mm4. Size: 17X17,18X18,19X19,20X20,21X21,22X22,23X23,24X24,25X25,28X28,30X30,36X36,38X38, ...