Correct use of the welding machine
How to correctly use monofilament butt welding machine A welding: 1. straightening the ends of the wire so that they pipe, ensure that the current through it. Adjust pointer 2.left hand, adjust the...
Valve welding Defects How to Deal With
1.Overview Among the pressure-bearing valves in industrial pipelines, cast steel valves are widely used because of their cost economy and design flexibility. However, due to the casting process by...