Refers to the part between the connecting piece and the nut. A flat metal ring used to protect the surface of the connector from chafing by the nut and to disperse the pressure of the nut on the connector.Washer is divided into: flat washer - C level, large washers - A and C level, large washers - C

Although the strength of the welding nut is large, it is not easy to loose, but in the use of the process also need to pay attention to some matters, so that the welding nut connection use. The so-called welding is to turn two separate parts into a whole, and mix them together after melting the meta

Because stainless steel and carbon steel are essentially different, stainless steel has better extensibility, improper use of simple lead to screw can not smoothly enter, the binding force is not strong. Precautions for the use of stainless steel drilling screws are as follows: Before using, confirm