... , cut machine, bend correction machine, riveting machine, forging use industrial furnace and energy conservation technology, forging mold and repair technology equipment ... . diamond saw blades, rill tool’s welding 4. drill bit, coal drill bit, pick bit’s welding5. braze lathe tool, milling ... : braze all kinds of pick bit, drill bit, drill rod, coal drill bit, wind drill bit and accessories of mine.2 ...