Primarily comprises: raw material inspection → acid pickling to remove scale → phosphating to form a lubricating film → saponification lubrication → drawing forming → heat treatment (if required) → surface treatment (galvanising, oil coating, etc.) → coiling and packaging. Drawing may be performed multiple times, with intermediate annealing to relieve work hardening. Parameters must be controlled at each stage to ensure dimensional accuracy and stable mechanical properties.
Tel：+86 0315-5295777
Whatsapp：+86 15027671676
E-mail: admin@shunzhaosteel.com
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