Development and Progress of HFW Pipe Welding for Media Diameter Line Pipe

Described mainly are the technology and mature practice involved in the HFW thick wall pipe product development for media diameter line pipe in some HFW pipe enterprises in foreign countries, which will be a reference to the improvement of the HFW pipe production technology level for media diameter line pipe and will also help making use of the current production resource and raising current technical equipment level in our country. With the product expansion and development, the outside diameters of HFW pipes have been expanded from 610 mm to 660 mm with their wall thickness increased from within 20 mm up to 25.4 mm and they are used in many oil and gas transmission projects with excellent applicability. It is recognized through analysis that the technology improvement and equipment perfection in a production line are the effective measures for developing and expanding the HFW pipe products for media diameter line pipe.