Our products include 6 series 1.Domestic and foreign railway fasteners: A: Track bolt, square head screw spike, T-bolt, 70 rail spike, dog spike, spiral spike, turnout spike. B: Elastic bar, lock washer, fishplate, rail anchor, track rod, gauge plate, nylon yarn, rubber foot. 2. Domestic and foreign standard components A: Hex bolt , square bolt , steel structure bolt , torsion shear type high strength plain washer , high strength bolt for bridge , stud, timber spike , hexagon flange bolt , bolt for carriage , handing down bolt , T-bolt , hinged bolt . B: Hex nut, square nut, hex flange bolt, slotted nut, and high strength nut for bolt. 3?Domestic and foreign fastener: spring washer, flat washer, split pin. 4. Domestic and foreign Anti-loosen Fastener: Various nuts and bolt (nylon anti-loosen, mechanical anti-loosen, screw anti-loosen types) 5. Various Standard components: Fastener for motor, diesel engine, mechanical vehicle, petrochemicals, and electric power, etc. 6. Mechanical processing component: thread spinner fitting, auto fittings, and full set of special equipments, etc. Standards for railway products :TB , UIC , AREA , etc. Standards for standard components : GB , DIN , ASTM/ANSI , BS , JIS , etc.