OK Tubrod 14.01 is a metal-cored wire containing copper, specially designed for the welding of Corten A & B and similar weathering steels or other high-tensile structural steels with a tensile strength of up to 510 MPa. Shielding gas Ar + 20% CO2. Slag levels are comparable with solid wire, often permitting multi-pass welding without inter-pass deslagging. OK Tubrod 14.01 is designed for bridge and general structural steelwork, ships and chimneys.