Our production standards are the national standard, German standard, international standard, British standard, Japanese and Korean standards (GB, ANSI / ASME, ISO, DIN, JIS ...), we can according to your need to produce your required specifications and dimensions (non-standard).
The staple products for Dongrui are serial Multi-Station Cold Upsetting Formers, and the products are protected by many patents. Dongrui products are with complete range of specifications and stable quality which have been sold to everywhere in China and exported to America, Europe, the Middle East and South East Asia etc. in the world. Dongrui products are trusted by customers both at home and abroad.
The company has passed through the certifications of ISO 9001:2008 quality management system and CE safety regulation, it has several sets of big size machine centers and a lot of advanced mechanized equipment made in China or imported from abroad, it also has a Technological Development Center at provincial level. The research and development ability and level of Dongrui company always plays a leading role at the fields of same trade in China, due to aiming at high standard and thanks to advanced inspection technique applied through whole production procedure, therefore the quality of Dongrui machines can be reliably guaranteed.
Our entire range of fasteners is made of carbon steel, alloy steel and stainless steel, aluminum, brass, silicon bronze and other special materials. Production is carried out in compliance with ISO, DIN, BS, ANSI, JIS specifications
Spring washers, Stainless steel washers, brass spring washers, phosphor bronze washers, spherical spring washers, triangular spring washers, stopped spring washers, double-decked washers for light rail, railway washers, wing washers(apilionaceous spring washers).
The main products are screws, nuts, carriage bolt, T bolt, threaded rods, drilling screws, anchors, drywall screw, spring pin, in stainless steel, carbon steel and bronze materials. Our products are widely used in communications, electronics, shipbuilding, automobiles, machinery, container, electrical, environmental protection and other industries.
The main products are long leading screws and the monthly production is 6000~7200 tons.The standards include American,German and English standards. The grades includes A307,B7,Class4,Class8,Class8.8,Class Bronze,S.S304,S.S316.The length in American and English standard varies from 0 metre to 144.The length in German Standard varies from 0 metre to 6 metres.threaded rod,threaded bar
Now our main products are screws (e.g.: non-standard screw, special screw, T screw, step screw, extended screw, color screw, torx plastic screw, carriage screw, socket head cap screw, hexagon head screw, self-tapping screw, wood screw,stainless steel screw, set screw, sport equipment supporting screw, furniture screw, scooter screw, and some screws in electron, electrical equipment, loudspeaker box, plastic, toy etc), step rivet, rivet with deep hole, thumb lock, axis core, lathe piece, stamping part and some other hardware accessories. Product in iron, stainless steel, bronze, aluminum etc can be done.
In terms of function, our rivets include semi-tubular rivets, solid rivets, non-standard rivets and screws and so on; in terms of materials, include brass, aluminium, stainless steel and various kinds of plating, such as nickel, bronze, zinc an black zinc according to customers’ requirement. We can also customize non-standard rivets.
We coat parts made of low carbon steel, cold-rolled steel, high-carbon heat-treated steel, tool steels, high-strength alloys, free machining steels, nitrided steels, sintered iron, malleable iron and nodular iron and cast iron, as well as brass, bronze and zinc die castings.
AASHTO — AASHTO M298-87
ASTM — ASTM B695-00
Chrysler Corporation — PS-1536
Ford — ESF-M1P67-A
General Motors — GM4344M & GM4345M
United States of America — MIL-C-81562B