1) standard: GB/T 18254, ASTM A295, JIS G4805 2) Specification range: OD: 6-80mm; WT: 3-13mm Application: Bearing Industrie High Precision bearing steel tube Full ranges: O.D 12-70mm Mini QTY: 1 ton Specification:1) Material: GCr15, 100Cr6, SAE 52100, SUJ2, SKF2) Size: O.D 12-80mm, W.T 2-18mm3) Standard: ASTM, DIN, JISG Production & Inspection:Cold Drawn and Cold RolledAnnealing: Spheroidize ...