WELDING WIRE 1.SIZE:0.8,0.9,1.0,1.2,1.6MM 2.STANDARD: ER70S-6 3.SURFACE TREATMENT:COPPER COATED 4.SPOOL ... construction,such as shipbuilding, bridge building, machinery manufacturing and general welding purposesPacking: spool weight: 1kg ,5kg,15kg,18kg,20kg per spool ... drum weight: 100kg or 250kg per drumprecision layer wire on the black plastic spool or metal spool, covered with ...