... welding equipment :welding coal mining tools, alloy drill bits, carbide saw blades, diamond saw blade (wheel), turbo chip, copper parts, automotive steering ... tool are tempering, forging, extrusion Etc, eating.3. diamond saw blades, rill tool’s welding4. drill bit, coal drill bit ... and all kinds of wooden cutters, braze high speed steel saw blades.High frequency welding machine features:1. fast speed, ...