How To Weld A Copper Pipe. Sections over 30mm require a preheat of 250C or greater. 4 welding torchConnect pipe welding torch blue oxygen tanks red tube connects the fuel tank check whether the welding torch is normal if the normal welding torch we slowly open the fuel valve and light then open the oxygen valve adjusting flame is blue flame its first seams with outer flame will bake a little bit about the preheating immediately by blue flame heating and welding seam near the flame preheating when red copper pipe welds after put welding.
4 welding torchConnect pipe welding torch blue oxygen tanks red tube connects the fuel tank check whether the welding torch is normal if the normal welding torch we slowly open the fuel valve and light then open the oxygen valve adjusting flame is blue flame its first seams with outer flame will bake a little bit about the preheating immediately by blue flame heating and welding seam near the flame preheating when red copper pipe welds after put welding. To weld AC copper pipe you are going to need more heat than the normal propane flame. Sections over 30mm require a preheat of 250C or greater.
Attach the locking pliers to the copper pipe just like how you positioned the locking pliers when you desoldered the pipe.
Push the plug into the pipe with the applicator tube provided. However TIG welding is a much preferable technique for creating lasting strong connections on copper pipes. Large butt angles are required and the weld metal should be deposited using the stringer bead technique. When welding together copper you need to make an angle of around 70 degrees which simply allows you and the weld to get a better judgement of where you are working.