HG168X7.11 high precision high frequency welded pipe production line is mainly to produce the round pipe from60-168mm with thickness 3.91-7.11mm, the square pipe size50x50-130x130mm,, thickness is from 3.91-6.00mm. This production line each unit equipment, full use of the domestic and foreign similar equipment, innovative design, full control with PC or computer control, advanced technology, convenient operation and maintenance, and reached the international level in the early ninety’s, for the domestic leading level.