Zhejiang Chaoboer Hardware Co., Ltd is a professional manufacturer of various standard and non-standard bolts and screws.
At present, we have 15 production lines of multi-automatic cold formers, 4 production lines of heat treatment, 2 production lines of spheroidizing annealing and 2 production lines of hot dip galvanized. Our workshop covers an area of more than 10,000 square meters. More than 90% of our products are exported to foreign countries.
In order to better ensure product quality and develop new products, we have a fairly complete and experienced R & D team and strict enforcement of product quality inspection personnel and a set of testing equipments. Our testing equipments as below: universal testing machine (1000KN), Automatic Digital Rockwell Hardness Tester (150A), Digital Vickers Hardness Tester (HV1000 with microscopic ), metallographic cutting machine, micrometer, vernier caliper, GO/NO GO gauge, projector, salt spray tester etc.
Hex Bolt, A325 Heavy Hex Bolt, Hex Flange Bolt, Socket Head Cap Screw, Carriage Bolt, Guardrail Bolt, Knurling Bolt, Shackle Bolt, Square Head Bolt, T bolt, SEMS, Bolt Assemblies