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
Dimensions
- 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
Certificates
- 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