oil temper meaning in Chinese

油回火
油中回火

Oil tempered carbon steel spring wire and springs
油回火碳素钢弹簧钢丝和弹簧
Oil tempered carbon steel valve , spring quality wire , and springs
油回火碳素钢阀弹簧钢丝和弹簧
Oil tempered wire for mechanical springs
机械弹簧用油回火金属丝
Oil tempered wire for valve springs
阀门弹簧用油回火金属丝
Oil tempered chromium - vanadium valve spring quality wire and springs
油回火铬-钒汽门弹簧优质钢丝和弹簧

More: Next