... : TP304,TP304L,TP321,TP316,TP316L Type: round and rectangular Stainless Steel Welded Pipe/Stainless Steel Welding Pipe Grade: TP304,TP304L,TP321,TP316 ... ,TP316L,SUS304/316Type: round and rectangular pipeStandards: ASTM ... to 12mmMain production technics: Argon ARC Welding Stainless Steel Welded Pipe