Handan Zhongyuan Standard Parts Factory is the first production of standard parts in the railway industry, one of fasteners manufacturer, consists of five factory, a factory: the production of railway screw spike; two plants: production highway guardrail bolts; third branch : production of electric power fittings; four plants: production expansion bolts; fifth branch: the production of custom-shaped nut and bolt fasteners. I plant mainly produces railway spiral spike, wood screw spike, fish bolt Standard parts GB30 , GB5780-5781 refined hexagonal bolts, GB52, GB6170 refined hexagonal nut, highway guardrail bolts, electrical fittings, all kinds of expansion bolts, a variety of custom-shaped fastener. (more>>)