How To Weld A Gas Pipe. The work area must be clean. The welding con-sumable should be selected to correctly match or overmatch the strength of the pipe.
At a minimum high-purity pipe welding should involve the following preparation. This includes the diameter and the classification of the electrode. Most of the torchs heat converts water to steam so copper wont get hot enough to melt the weld.
Just like other TIG welding applications the metal must be spotlessly clean before TIG welding.
Also you can make use of a brush that is built of wire for cleaning the surface of a metal. Tack welds which will be incorporated into the final weld shall be tapered on both ends to facilitate proper fusion. Welding gas pipe 10-17-2004 0939 AM. Any defective tack welds shall be removed by grinding.