Stainless steel welded slotted tube (channel tube groove tube/pipe) for glass description: 1) Standard: JIS, AISI, ASTM, DIN 2) Outside diameter: 6mm to 127mm 3) Wall thickness: 0.4mm - 2.5mm 4) Material: 201,202,301,304,304L,321,316,316L,430 5) Surface: mirror polish, satin finish 6) Application: for railing system 7) Packing: every tube is sleeved in plastic bag individually. Every tube is sleeved in plastic bag individually.