锅筒环缝石棉衬垫法埋弧焊自动焊焊接工艺

锅筒环缝石棉衬垫法埋弧焊自动焊焊接工艺的英文翻译

基本释义

• Asbestos mat welding technology of automatic submerged-arc welding for boiler's canister ring-seam