Exothermic welding graphite mold/mould manufactured by Sunlightweld factory is designed to last for an average of 60 to 100 connections, providing a permanent molecular connection for all electrical grounding applications. Graphite mould is made of high quality graphite suitable for high quality welding work and every type of exothermic graphite mold is designed specifically for a certain union depending on the elements to be welded and the joint type required.exothermic graphite mold/mould manufactured by our factory is designed to last for an average of 60 to 100 connections. This will vary according to the care given the mould during use. Graphite mould is made of high quality graphite suitable for high quality welding work and every type of exothermic graphite mold is designed specifically for a certain union depending on the elements to be welded and the joint type required.