1.Standard : ASTM B348 , ASTM F67, F136 2.Tolerance: h9 (normal delivery status),h8 3.Surface: Polishined 1. Material: Gr1, Gr2, Gr3, Gr4, Gr5, Gr7, Gr9, Gr122. Standard: ASTM B348, ASTM F136,ASTM F673. Tolerance: h9(normal delivery status),h8,h74. Straightness Accuracy: ≤0.5mm/m5. Ovality Accuracy: half of the tolerance6. Surface Roughness: Ra0.8~1.6Notes:We can supply Material Quality List, ...