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Duplex Stainless Steel Pipes/Tubes: 1. Standard: ASTM 2. Grade: 630 / 631 / 2205 / 2507 / 17-4PH ASTM A789, ASTM A790, ASTM A450, ASTM A530, GB/T 14976, GB/T 14975, GB/T 13296, etc 3. OD: 8mm-1000mm 4. Wall thickness: 0.3mm-30mm 5. Length: max.18000mm or as demand 6. Surface finish: Polishing (180#,220#,240#,320#400#,600#), Hairline, acid pickled, etc.  Wall Thickness Tolerance of Duplex Stainless Steel Pipes:  |
