Weldcon India [P.] Ltd. Manufactures Zirconium Copper Spot Welding Electrodes. Weldcon India [P.] Ltd. Is the supplier of spot welding guns, 32-75kva welding guns, medium frequency suspended guns, spot welding electrodes, spot welding robot etc. Zirconium Copper Spot Welding Electrodes is an extra-flex kick less cable. Zirconium Copper Spot Welding Electrodes is available in all shapes and sizes. These spot wielding electrodes are used for coated sheets, electrode holders copper flexible shunts.