When welding thick-walled steel pipes, the oil, paint, water, rust, etc. should be removed first. Then, according to the wall thickness, the thicker groove, the thicker groove is opened, the thinner tank is opened, and the thinner (angular grinder) is opened, and then the gap of the product is typic......

The pattern of automobile market presents new changes

Definition of high frequency welders: High-frequency tube welding machines are also known as high frequency induction, using high-frequency current flowing through a high frequency current of 10 to 500 kHz, generating electric resistance heat, applied (or not applied) pressure to achieve metal bondi......