... H08C,H08MnA,H10Mn2,h08MnMoA,H08Mn2MoA wires, It is suitable for welding various pipeline steel material, such as X52,X60,X65 ... be used in multilayer welding , two-sided only road welding, welding electrodes welding, narrow gap bury arc welding voluntarily. TYPICAL FLUX COMPOSITION ... for 2 hours at 300-350°C before use2.Completely remove rust, grease and moisture from the groove surface prior to welding ...