Stainless Steel Square Pipes STANDARDS:ASTM/ASME,GB, DIN, JIS, T14975, etc. STANDARDS: ASTM / ... Variety:square pipe,round pipe,rectangular pipe,embossed pipe,threaded pipe 1)Products: Stainless steel tube2)Grade: AISI 304, AISI 201, AISI 202 ... )Polishing: 400 grit, 600 grit, 240 grit, HL, 2B, BA Stainless Steel Square Pipes