... 2.weld all metal abrasion, scratch, crack, SZ-1200 mould deep hole, crack, stainless steel plate cold welding machine, portable laser ... aluminum, etc; welding defects can be pin holes, cracks, abrasion, scratch, oversize, et Characters of SZ-1200 for welding1. Small heat ... effect Welding without grinding-- after grinding SZ-1200 chrome plate scratch welding machine, portable laser welding machine