Haiyan Hongrun Fastener Co., Ltd is a professional manufacture of producing 4.8, 8.8, 10.9 and 12.9 of the hexagonal flange bolt (including Prevent slippery tooth flange screws, wheel hub screw and Seat belt screw), high strength auto distribution fasteners and other kinds of non-standard special items.
Various kinds of bolts, screws, hex nuts, flange nut, plain washers, spring washers, wood screws, thread rods and so on according to DIN, BS, ANSI/ ADSI, NFE, GB and ISO standards.
Materials: carbon steel, stainless steel and copper with brüniert zinc plated, galvanized and nikel plated in the surface.
Products: screws, bolts, nuts, washers, pins, rivets and so on.
Our products are widely used in the areas of energy, electron, wiring, mechanism, chemistry, metallurgy, mould, hydraulic pressure, cars and so on.
We can also manufacture non-standard fasteners according to guests’ inquiries.
Our products have passed the authentication of ISO9001, QS9000 and other international standards.
High strength standard and non-standard parts for automobiles and motor-cycles, and others.
Especially, wheel bolt,wheel nuts,flange bolts,flange nuts,hex head bolt,screws,self-tapping screws,hex nuts,anchor bolts,special fastener,etc.
Main grade 8.8 and up.
production and sales of stainless steel self tapping screws,Mechanical screws,nuts, rivets,washers（plain washers and spring washers）,wedge anchor, stainless steel undercut anchor, aluminum extrusions, expansion screws and other standard or non-standard fasteners and curtain wall accessories.
Gem-Year are producing all kinds of high quality products such as bolts, nuts, screws, drawn wire and other off-standard fasteners, which are according to GB, ANSI, DIN, UNI,JIS and ISO standards with yearly production output of 200,000 metric tons.
Hex head bolts and screws, High strength bolts for Structural application, Full thread stud bolts, Double-end stud bolts , Socket head cap/set screws, Welded stud, Anchor bolts, U bolts sets, Clamp sets, Insulation clamp sets.
Hex nuts, Heavy hex nuts, High strength nuts
for Structural application, lock nuts
Plain washer, spring washer, square taper
API 20E BSL1、BSL2、BSL3 Bolts and Nuts
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.
Standard Fasteners: Nuts, Screws, Washers, Bolts, Screws, Threaded Rods, Drywall Screws, Rivets, Flange, Sleeves, etc., as well as a variety of Non-standard Fasteners, and we can also undertake external processing.