| 摘要 |
Method involves welding with TIG technique in inert atmosphere to avoid nitriding, uses special orbital welding head and consists of producing firstly expansion of end of components (2,3) to be joined with inner diameter equal to outer diameter of original tube, upright end of the 180 degrees elbow (1) to be joined being introduced into this expansion and weld effected. An Independent claim is included for the orbital welding head used in this welding technique. |
