Industrial mechanics and mill wrights may be cross-trained in a second trade such as pipefitting, welding, machining or electrical maintenance.
工业机械师和维修工在第二行业中可以交叉培训，如管件，焊接，机械加工或电器维修。
2
The paper gives a description to the electric resistance welding and stretch reducing mill process (ERW/SRM) in steel pipe production and the features of its main equipments.
介绍了用焊接和热减径工艺生产钢管的ERW/ SRM 生产线及其主要的工艺设备特点。
3
F1 and F2 heavy gear of BENGANG 1700 Mill are the biggest welding gears produced by our company so far.