Material: carbon steel, Alloy steel, stainless steel and brass ; Finishing: zinc plated, copper plating, black, phosphating, mechanical galvanized, hot dipped galvanized, dacromet, etc ; Product Line: bolts, nuts, washers, screws, thread rods, steel structures, non-standard parts, metal stamping; Bolt Class: 4.8、5.8、6.8、8.8、10.9、G-2、 G-5 Nut Class: 6、8、10、2H、HV 10、G-2、G-5

1. Product Type Standards Fasteners: Compliant with DIN/IFI/JIS/ISO standards, covering core automotive products such as shoulder bolts, gear bars, spline screws, truck bolts, four-cornered screws, carriage screws, and T-bolts; chassis components, nuts, sleeves, exhaust pipe hooks, safety belt mandrel parts, and assemblies. Other products: rivets, irregular parts, customized products, mold-closing screws, special screws, and double bolts. 2. Product Specifications and Material Specifications: IFI standard (NO.4–1 inch, maximum length 8 inches), DIN standard (M4–M24, maximum length 200mm). Materials: carbon steel (compliant with ISO-898 and SAE J-429 standards), alloy steel, copper, aluminum alloy, and stainless steel (A2-50, A2-70, etc.). 3. Surface treatments include electro-galvanizing (trivalent chromium, hexavalent chromium), alloy plating (zinc-iron alloy, zinc-nickel alloy), painting (GEOMET, MAGNI, DELTA-TONE, etc.), electroplating of tin/nickel/copper, zinc phosphate, hot-dip galvanizing, and mechanical galvanizing. 4. The anti-loosening design covers chassis components, nuts, sleeves, exhaust pipe suspensions, main shaft parts of seat belts, assemblies, and various fasteners including bolts and nuts, carbon steel screws, stainless steel screws, and bimetallic screws.

Screw in Grade 12.9, 10.9 and 8.8 & SS Screw DIN912/GB70 Hexagon socket head cap screws DIN931~933/GB5782~5783 Hexagon head screws DIN7991 Hexagon socket countersunk head screws ISO7380 Hexagon socket button head screws ISO7379 Hexagon socket head shoulder screws DIN916-45H Alloy Steel hex Socket Head Set Screw

It is a company specialized in production and sales of Carbon steel spheroidizing annealing wire, Alloy steel spheroidizing annealing wire, rivet wire, bright wire. The products are mainly applied in the down stream customers like the suppliers of precision electronic screw, building screws, auto-car fasteners, rivets, precision springs and various Precision Machinery Elements etc.

EF has ten years’ experience of fastener production and sales, and our products are mainly exported to the United States, Canada and South America. Since 2014, EF began the production and sales of special parts, such as machining parts, stamping parts, casting parts, forging parts and other non-standard products. Material covers copper, aluminum, plastic, rubber, carbon steel, stainless steel, alloy steel etc., and the products are mainly sold to North America and Europe. Our registered head marking are ‘ EF’ and ‘01XG’, which can be used around the globe. In September 2017, EF moved to Beilun district, with a big warehouse. It helps long-term customers to stock spare parts inventory to meet their split deliveries. Meanwhile, we can also do some special packing for customers in warehouse. EF has passed the ISO9001-2015 system certification Welcome new and old customers to visit our company.

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.

RIVET NUTS (INSERT NUTS) RIVET NUTS OF PAN HEAD, SMALL HEAD AND COUNTERSUNK HEAD TYPES(SHANK, SLOTTED, HEX , SEMI-HEX, BLIND HOLE) MATERIALS: STEEL, ALLOY STEEL AND BCOPPER.

1). Equipment/Machinery 2). Medical & Technological parts 3). The Automotive parts 4). The telecommunication parts 5). The power tool parts 6). Construction parts 7). The agricultural parts 8). Energy related part 9).electronic-products 10).house-hold products

We provide high-quality fasteners according to the standards of DIN, ISO, ANSI/ASME, IFI, ASTM, BS, AS/NZS, JIS, KS as well as special fasteners at customers requirement. At present, our products include bolts, nuts, washers, and threaded rods covering 4 series and 30 categories. Materials involve carbon steel, alloy steel, stainless steel, etc. Under the collaboration of the staff and with years of experience in marketing, our products enjoy ready markets in United States, Europe, Australia, South-east Asia and other Pacific countries and regions and are well-appreciated by the customers. （DIN934DIN931DIN933）

ur company included 2 branch factories with related machining capability. One is silica sol (lost wax) precision casting factory and the other is resin sand casting factory. Our business range from stainless steel casting, heat-resistant steel casting, carbon steel casting, alloy steel casting, abrasion-resistant casting to iron casting . The products are widely used in machinery equipment, chemical equipment, auto parts, marine hardware, hardware tools, medical and foodstuff appliance, construction hardware and otherwise. The current annual production capacity of precision casting is 1000 tons, the weight per piece is from 0.005KG to 50KG; the annual production capacity of sand casting is 10,000 tons, the weight per piece is from 50KG to 5000KG