TL55-B2Application:TL55-B2 solder wire of Cr-Mo steel is an argon enrichment solder wire for gas shielded welding and is suitable for welding 550MPa grade high strength structural steel.It is mainly used for engineering machinery,mines machinery and pressure container,etc.Specification:Φ0.8mm Φ1.0mm Φ1.2mm Φ1.6mm Φ2.0mm Packing form:10kg,15kg or 20kg packed in plastic disk or wire disk Chemical components of solder wire(%) C