Applicable for Hydraulic welding machine preferably with data logger to record the parameters of fusion welding Preparation of welding surface : The pipes to be welded should be cut square; Pipe ends should be planed after cutting; Inspect before welding for damages, wall thickness variation, ovality and cleanliness of pipe ends surfaces. Re-rounding tools shall be use specially for the coils to prepare the pipe ends ready for fusion jointing. http://tatvapipe.com/jointingmanual.html