socket-welding fitting 焊接式管接头
butt-welding fitting 对口熔接接头
quality inspection before welding fitting 焊接前装配质量检查
welding fitting 焊接式管接头
sequence of fitting and welding 装配焊接顺序
Welding and fitting 焊接及装配 ; 焊接与装配 ; 焊接和装配
welding and fitting platform 焊合台
welding pipe fitting 焊接管接头
fitting and welding 配合与焊接
All skilled welding and fitting was done by regular employees.
全部技术性的焊接和装配活都由正式工人担任。
Knowledge of basic electrical, welding, cutting and fitting of pipes, principles of hydraulic and air operated equipment.
基础电气知识，电焊，切割，装配管道，熟悉液压和气动设备的基本原理。
The pipe fitting has the advantages of simple manufacturing process, easy control of the heating process of the pipe fitting, longer service life and good welding quality.
该类管件制造工艺过程简单，管件加热过程易于控制，具有较长的使用寿命，焊接质量好。
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