For the Depths of the North Sea and Beyond: Spiral Welded Steel Pipe Engineered for Offshore Energy
Built to Withstand Pressure, Corrosion, and Extreme Marine Dynamics
Offshore pipelines and structural foundations face some of the harshest conditions on Earth. Our API 5L PSL2 certified Spiral Submerged Arc Welded steel pipes are specifically designed for European and North American offshore projects-from wind farms in the North Sea to deepwater oil & gas fields in the Gulf of Mexico.
Why Engineers Choose Our Spiral Pipes for Offshore Service
Full Traceability & Global Certifications
Standards: API 5L PSL1, API 5L PSL2.
Steel Grades: GR.B, X42, X46, X52, X56, X60, X65, X70.
Water Depth Capability: Up to 1500 meters (mid to deepwater applications).
Optimized Strength and Fatigue Resistance
The helical weld geometry provides a favorable stress distribution, allowing 15–25% thinner walls compared to longitudinally welded pipes while maintaining burst pressure ratings
Validated through full-scale 4-point bending fatigue tests for vortex-induced vibration and thermal cycling resistance
Complete Marine Corrosion Protection
External coating: 3LPE, 3LPP, or Fusion Bonded Epoxy (FBE) to DNV-RP-F106 specifications
Internal lining: Epoxy or Duplex stainless steel overlay for sour service (H₂S / CO₂).
Ready for Offshore Installation
Beveled ends per API 5L or NACE MR0175 for automatic or semi-automatic welding
Concrete Weight Coating (CWC) available for negative buoyancy and impact protection
Key Offshore Applications
| Application | Specific Use |
|---|---|
| Offshore Wind | Monopiles, jacket legs, suction bucket foundations |
| Subsea Pipelines | Oil & gas flowlines, water injection lines, hydrogen transport |
| Jumper & Risers | Static risers, expansion spools, tie-in spools |
| Deep-Sea Mining | Nodule lift pipes, tailings discharge lines |
Engineering Integrity for the North American & European Market
We fully understand your demand for documented quality and asset integrity management:
Supplied with EN 10204 Type 3.1 or 3.2 inspection certificates (third-party verified);
Each pipe identified by a unique weld seam ID with full UT/RT traceability.
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