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.
Registered trademark: FD
Main products: flange bolts, flange bolts, six cross angle cross bolt, bolt, recessed head screws with cross, automotive fasteners, fasteners, custom wind stainless steel flange bolts, to undertake a variety of high quality special fasteners.
GB5787, GB5789, GB16674, DIN6921, DIN1662, IFI-111, ISO 4162, JIS B 1189, GB9071.1- GB9074.17, Q180, Q184 car automobile bolts, bolts and other products
railway fasteners: screw spikes, track bolts
non-standard fasteners: U bolt,square bolts, wheel bolts, special bolts and screws, drive screws
standard fasteners: ANSI/ASME B18.5 1990,DIN6914, ANSI/ASME B18.2.1 1996, DIN571,square bolts, hex bolts, wood screws, eye bolts,hex head screws, hex lag screws, round head square neck bolts, hex nuts
stamping parts: pipes & hooks, hose clamp, welded stampings, clamps kit
punching piece, cooling extrusion of cooling and heating, mechanical processing, non-standard piece, which are consistent with GB, DIN, ANSI and JIS, products of various specifications and max length of 1500mm.
Main products: Finished hexagon head bolts conforming to national standards including GB30-76, GB21-76, GB5780-GB5783-86(Grade 4.8, Grade 8.8), diameter is M6-M30 and length is 16mm-200mm
Processing customized business: Bolt with reduced stem, tower bolt, lock bolt, anchor bolt, stud bolt, galvanized bolt, DIN933-931 bolt, bolt of American National Standards Institute (ANSI), bolt of British Standards (BS), bolt of Japan Industrial Standards (JIS) ISO and matching products,and a variety of shaped bolts manufactured according to he requirement of customers.
High strength bolts
Spring washers, springs, tension springs, and torsion springs.
Materials: 70#, 65M, 304, 316
Tension springs, pressure springs, torsion springs, pagoda springs, and specialty springs in diameter from 0.2mm to 10mm
Spring washers, wave spring washers GB7246-87, curved spring washers GB7245-87, heavy-duty spring washers GB7244-87, and single coil spring lock washer for assembly GB9074.26.
Standard: GB, ANSI, BS, DIN, etc. in diameter from 2 to 30 are available.
Our main products are high-strength fasteners and we offer a vast assortment of bolts, nuts and screws in every material and specification, according to GB,DIN,JIS,BS,ANSI standards. Custom non-standard fasteners are also available.
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.
Snap Ring, circlips for shafts, E clips,circlips,hex head bolt,anchor bolts,motorcycle bolts,
huck bolts,wheel bolt,carriage bolt,socket head bolt,
hook bolt,hanger bolt,plow bolt,guardrail bolts,
countersunk bolts,structural bolt, lag bolt,
lock bolt,pan head bolt,
stud bolt,square head bolts,track bolts,expansion bolts
Standard bolt, screw ;
Standard nut ;
The high strength fastener
Able to bear the falling type fastener;
Making up type fastener;
Welding type fastener;
Axle sleeve ;
Reed nut punching ;
Product Application Field:
All types of electrical appliances, electronic products, computers, mobile phones, communication terminals, furniture, automobiles, motorcycles, toys, lighting, sound boxes, horologes, instruments, cameras, mechanical equipments, construction installation and etc.
The main categories of products:
Fasteners: various kinds of precision of machine screws, self tapping screws, triangle screw, screw, bolts, nuts (nut products: Lock nut, wing nut, rivet nut, self locking nut), rivets, washers, spring, lathe type (non-standard).
Machining parts: precision stampings, shaft core, pneumatic fittings, CNC computer lathe.
Fastening pieces categories:
Precision Machine screw, Drilling Screw, triangle screw, Combinational screw, Bolts category, Nut category, Rivet category, Washers category, Spring category and Lathe parts category (non-standard items).
Mechanical Processing Parts categories:
Precision Stamping Category, Mandrel Category, Pneumatic Fittings Category and CNC Lathe Category.
Main Materials of products:
Carbon steel (low carbon steel, medium carbon steel, high carbon steel and spring steel), stainless steel (SUS201 SUS202 SUS302 SUS303 SUS304 SUS316 SUS416), alloy steel, Zinc Aluminum Alloy, free-cutting iron, aluminum, copper, plastic, PVC, bakelite, nylon and etc.
Manufacturing standards of products:
Our main manufacturing standards of products are ISO, GB, JIS, DIN, BS, ANSI and corporate standards (customers providing drawings).
Surface-treatment of products:
trivalent zinc( white, blue, black, yellow, color),nickel, copper plating nickel, copper plating, gilt, silver plating, chrome plating, ancient copper plating, gold imitation, common , high-temperature, rust, head spray-painting, surface staining and NYLOK treatment. The products are in complaint with ROHS and SONY standard, also with Third-party certification testing such as SGS report.
Our Strength: high quality, rapid distribution, competitive prices and first class services.
Our mission To provide our customers with first class service in the supply of quality fasteners and industrial components while minimizing costs through the integration of people, technology and experience.
Pressure vessel joint, round nut used in liquefaction bottle, round nut joint used in hydraulic cylinder, theft-proof nut, all standard screws and non-standard screws, and other forged products.
(Explosion-proof joint,Hydraulic joint)
We introduce the foreign production of advanced technique to make 5 moulds, 6 moulds, extended, bearing type high speed nuts and elements, many work position cold extrusion machines, cold Dui machine, it is compact to have structure and rigidity is high, operating, maintenance the characteristics such as convenience.
Book equipment application in automobile, motorcycle, machinery foundation profession (such as chain, fastener, bearing, box spanner, tool, special different type nut and flange surface nut, sides nut, welding nut, cover type nut , locknut, defence pine nut, pull hat nut, chain Luo pull, expansion gecko, independently axle gear, bicycle different type etc.) etc. various different type , complex is not mark cold squeeze into type, suitable scope extensive.
Wenzhou days Wei Machinery specializes in producing multi-cold heading machine; production [M6-M20 (10B-30B)], [three-mode three red], [four-mode four red], [five] die punch five other models and more station automatic high speed screw cold heading machine.
Yuhuan Zhengshi Machinery responsibility Co.,Ltd. Yuhuan ZhengShi Machinery Co.,Ltd, lies in Yuhuan country, Zhejiang province, which is called “the hometown of automobile and motorcycle”, established in 1983, It’s predecessor is Yuhuan Hongqi electric Appliances & Motor Fitting No,2 Factory. At present, Company mainly produce series of ball joint, control arm, Disc brake caliper parts（Include caliper Pistons and Series of adjust screws）, Drum Brake Parts (All kinds of Prepare Kits and Series of adjust Screws). Automobile Wheel Bolts and Nuts, Oil Connector, High Strength Bolts (Standard and Non-Standard). It has long been playing supporting role in cooperating with automobile manufacturing group companies all over the country, and its products already sell well in our domestic, as well as have a ready market in U.S.A, Korea, Italy, France, East-South area and Middle-East Countries..