表面硬化处理
hard drawn wire
case hardening
surface hardening
Surface hardening treatment
carburize
Carburization
cold work hardening
表面硬化堆焊焊条
hard surfacing buildup welding electrode
表面硬化工艺
Surface hardening process
表面硬化焊条
hard surfacing welding electrode
表面硬化加工
Surface hardening process