... , Sn20/Pb80, Sn80/Pb20, Sn40/Pb60, Sn55/Pb45, Sn50/Pb50, Super Welding Bar Type of Welding Bar--Lead-free Welding Bar ... Welding Bar:The Super Welding Bar was made of super pure tin and electrolysis lead, and using advanced smelting technology and strict QC ...