To make sure our corporate'culture get along well with our enterprise'image, Three GirthLine is always trying it's best.
追求与企业形象浑然一体的优秀文化，叁围线一直在努力！
2
The invariablenes condition of circle girth of the join-line end of the main pipe was set up and the join-lines on Y-tee to be ellipse was made certain.
建立了圆柱分支管y型三通的主管相贯线处的周长不变的条件，确定了相贯线为椭圆。
3
The invention is used for automatic air gouging back gouging of the straight welding line and the girth welding line of the large cylindrical welding structure.