软钢锻件 [机] blackwork

钢锻件 Steel Forgings

熔焊钢锻件 Welded steel forging

钢铁锻件 Iron and steel forgings

容积式压缩机用钢锻件 Steel forgings for displacement compressors

压力容器用钢锻件 Steel forgings for pressure purposes

锻钢制螺纹管件 Forged steel threaded pipe fittings

钢锻件的无损检验 Non-destructive testing of steel forgings

钢质模锻件 Tolerances and machining