Manufacturing Process Flow Chart for Cold Pilger Tubes & Pipes


Seamless Mother Hollow is pilgered with the help of internal mandrel and external rolls set to get the desired diameter and thickness. Then all pilgered tubes/pipes undergo the degreasing and cleaning process to remove oil, grease and other foreign particles. It is then Solution or Bright annealed, straightened, cut, deburred, pickled and passivated. The tubes then undergo a 100% hydro-testing, visual and dimensional examination, 100% PMI testing and then marked and packed as per Standard or Customer requirement. Now, Pilgered Tubes/Pipes are Ready for Shipment.