... ,Gr.7,Gr.9,Gr.12,2. Standards: ASTM B863, AWSA5.16, ASTM B348, ASTM F67, ASTM F136, AMS4951, AMS4954, AMS4956.3. Size : ... 4V),Gr7,Gr9,Gr12, etc.StandardGB,ASTM, BS,BSW ,ISOAWS A5.16, ASTM B863, ASTM B348, ASTM F67, ASTM F136SpecificationDiameter:0.04-6.0mmSurface TreatmentPolishing ... best service .We have high technical production line with top quality products.We have win high reputation based on best ...