The pins to weld C2G are available in many dimensions (m3 in M25) and types in order to answer all your solutions of specific brazing: SIG (Stud Inert Gas) - ARC (ARC fusion forging) or DEC (Discharge of manufacturer of condensers).
The quality of the pins to weld C2G confers a very great tear strength to them while allowing a fast and easy installation in the processes of fast welding imposed today by the metallurgy.