1. Property class of fasteners: 8.8, 10.9 and 12.9; 10.9 and 12.9 on the richter scale. 2. Size: Threads from M12 to M100 in diameter with the length going up to 2 meters. For stud bolts, the maximum size can be fulfilled up to M100, and the length up to 10 meters. 3. Machining precision: CNC is mainly used for after-finishing machining and the precision can reach 0.02 millimeters. Grinding machines' precision can reach 0.002 millimeters. 4. Raw materials: raw materials normally include 35CrMoA, 42CrMoA, B7, 42CrMo4V, 40CrNiMoA, 34CrNiMo6, 314, and 316, etc.. 5. Product surface treatments include plain, dacromet, magni, black, zinc plating, and hot dip galvanizing, etc.. 6. Application fields: Mainly used on area as following: A. High-speed railways, motor train unit,urban rail transit B. Vessel cranes, offshore cranes C. High-pressure pumps,Vacuum pump D. Fastening of mining machinery E. Amusement devices F. Wind-fix and other fields. 7. Batch management: Our products perform 100% batch management. 8. Decarburization situation: Rolling is done 100% after heat treatment, no oxidation or decarburization. 9. Product NDT: we can provide 100% magnetic particle NDT |