The method can properly reduce the air amount at the tapping holes when normal iron discharge is carried out, and can reduce the energy consumption of the fans and save the energy.
本发明可实现对正常出铁时铁口的风量适当减少，减少风机能耗，节约能源。
2
Our Factory manufactures all kinds of screws of Tapping screw, fiber board screw and furniture screw for electronic, electric apparatus, iron or wood furniture.
电子、电器、铁木家具用自攻螺丝、纤维板钉、快束牙等螺丝制造。
3
The column, is made of casting iron, will take various models of drilling units or tapping units at user's selection.