Mannesmann Grossrohr GmbH has manufactured spiral-weld large-diameter pipe for the oil and gas industry for more than 50 years now. As a technology leader we set standards around the globe. Our manufacturing program comprises pipes for high-pressure gas pipelines, oil pipelines, natural gas pipe arrays, starting pipes for induction bends, piling pipe and structural tubes for special requirements.

Manufacturing program

Spiral-weld steel pipe


  • Outside diameter: 610.0 mm – 1,676 mm
  • Wall thickness: 8 mm – 25.4 mm
  • Length: up to 18.3 m

Steel grades

  • Line pipe: up to L555 and/or X80
  • Structural tubes: S460
  • Other specifications on request

Special features / advantages for our customers

  • HTS technology (two-step process)
  • With the spiral-pipe welding process, all pipe diameters within the manufacturing program can be manufactured precisely to the customer's specifications. No special tools needed.
  • Coatings or coating systems for all application requirements, e.g. 3-layer coating (PE,PP) or fusion-bonded epoxy coating (FBE)
  • Our products meet the most exacting specifications in terms of straightness, roundness and diameter accuracy


  • API 5L
  • API Q1
  • BS OHSAS 18001
  • CE
  • DNV
  • DIN EN ISO 3183
  • DIN EN ISO 9001
  • DIN EN ISO 14001
  • DIN EN ISO 50001