Non-annealing, non-quenched and tempered alloy cold heading steel; suspension spring, bogie spring steel and automotive cold heading steel fine wire, spring steel bright steel bar, etc.

Bridge bolts, plug bolts, embedded bolts, extended bolts, lining plate bolts, high strength inside hexagon, extremely difficult special bolts and nuts

Stainless steel flange screws, stainless steel T-shaped screws, stainless steel teeth, stainless steel double head screws, stainless steel anti-theft screws, machining non-standard parts, cold heading non-standard parts

GB/T120-Internal threaded cylindrical pin 、GB/T119-Cylindrical pin、GB/T118-Conical pin with internal thread、GB/T117-Conical pin、DIN912-Inside hexagonal cylindrical head screw

applications of continuous bright carburizing (tempering) quenching furnace, continuous hot blast none-oxidation annealing (spheroidizing) furnace, crucible type annealing (spheroidizing) furnace, multi-purpose chamber furnace, vacuum furnace, etc.

Multi-stroke cold press molding,Screw heading machine,Rivet heading machine,Screw rolling machine,Hollow rivet heading machine,Steel ball heading machine

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