Welding methods for carbon and steel pipes

[Music] let's see how a weld is made on carbon steel pipe with a heliarc torch any standard type of joint design can be used for example the edges of these pipe sections have been beveled to 37 1/ 12° the VG Grove with no nose Mak spacing unnecessary with the sections lined up make tack Wells to hold them in position strike the Ark by moving the head of the torch and a swinging motion bringing the tip of the electrode down to the metal surface keep as short an arc as possible don't let the electrode touch the puddle if you do you'll contaminate the tungsten electrode at the end of each tack weld work the puddle to the side at the same time increase your welding speed making the puddle smaller this technique eliminates crater cracking