Longitudinal Welded Pipes

Longitudinal welded pipes can be manufactured through 3 different processes, UOE, JCOE and HFW. Steel Grades can be up to API 5L X80 and lengths of 18m.

UOE Mills

UOE derives from the method of pressing steel plates to form a round steel pipe. A “U” shape is first pressed, followed by an “O” and finally expanded to achieve roundness in the pipes. Longitudinal Submerged Arc Welding of LSAW is then carried out, first on the inside and subsequently on the outside, to ensure that the plates are formed into pipes.

  • Outside Diameter: 508mm – 1016mm
  • Wall Thickness: 6.0mm – 25.4mm
  • Length: 9m – 18m

JCOE Mills

JCOE differs from UOE in terms of its method of pressing plates into pipes. “J” shape, followed by “C” and then “O” is first pressed before expansion and LSAW welding takes place.

  • Outside Diameter: 406mm – 1422mm
  • Wall Thickness: 6.0mm – 50mm
  • Length: 3m – 18m

HFW Mills

High Frequency Welded (HFW) pipes make use of a high frequency induction heating to weld plates into pipes.

  • Outside Diameter: 114mm – 711.2mm
  • Wall Thickness: 3.0mm – 25.4mm
  • Length: 3m – 18m


Coating for Oil and Gas

Pipes are available in various types of external and internal coatings – single/double layer fusion bond epoxy (FBE), two or three layers polyethylene/propylene (3LPE/3LPP), Bitumen external coating, Liquid epoxy, and Bitumen and cement internal coatings.

Quality is the foundation of our success. Our products comply with international standards and specifications and are subjected to third party inspection by international inspection agencies.


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