1)Welding reverse slotted domed bursting disc, the bursting disc and holder are connected by welding, which has advantages of good sealing quality, high accuracy, conveniently installation. 2)Welding reverse domed scored bursting disc, the bursting disc and holder are connected by welding, which has advantages of good sealing quality, high accuracy, conveniently installation. Applied in GIS、C-GIS、transformers and arresters.The bursting disc open picture: