The article introduced the main construction technique of open top pipe construction through a top pipe construction project instance of Kunming.
文章通过昆明市某顶管工程实例，介绍了开敞式顶管施工的主要施工工艺。
The paper introduced pipe internal welding machine's composition, necessary equipment and unique advantage in large diameter thick wall pipe construction.
介绍管道内焊机的结构、配套设备及在大口径厚壁管道施工中的独到优点。
The marked character of inner welder is its high jointing speed and can confirm welding quality. It is one of the most important instruments in mechanization and efficiency in pipe construction.
内焊机的显著特点是根焊速度快、确保焊接质量，是管道施工实施机械化、高效化焊接的关键设备之一。
Automobile Components, Railway Castings, Compressors Components, Components of Pump, Valve and Pipe, Construction Machinery Parts, Agricultural Machinery Parts, Aerial Platform Parts etc.
汽车零部件、铁路件、压缩机类铸件、泵阀管类铸件、工程机械部件、农用机械部件、高空平台升降机部件等。
Automobile Components, Railway Castings, Compressors Components, Components of Pump, Valve and Pipe, Construction Machinery Parts, Agricultural Machinery Parts, Aerial Platform Parts etc.
汽车零部件、铁路件、压缩机类铸件、泵阀管类铸件、工程机械部件、农用机械部件、高空平台升降机部件等。
应用推荐