Standard: JIS, GB, DIN, ASTM, API Grade: 20#, 15CrMo, 12Cr1MoV, 16Mn, A53(A,B), Outer Diameter: 6 - 820 mm 1/8"-34a Standard JIS, GB, DIN, ASTM, APIGrade 20#, 15CrMo, 12Cr1MoV, 16Mn, A53(A,B),Outer Diameter 6 - 820 mm (1/8"-34)Thickness 1 - 100 mmPackaging In bundles, seaworthy wooden cases, wooden or steel pallet plastic bag or as per customers requireme Straight seam steel pipe