API-grade ERW mills with HFIW welding for premium pipeline applications up to 26" diameter
API-grade ERW mills utilize high-frequency induction welding (HFIW) to produce pipes meeting stringent American Petroleum Institute standards. The continuous forming process transforms steel coil into precision-welded pipe at speeds exceeding 30 m/min, with dimensional tolerances within ±0.1mm on wall thickness.
These versatile mills feature automated roll setting with no roll change needed in the BD section across the full diameter range. The weld seam achieves 90%+ of base material strength through controlled forge pressure. Applications span oil and gas transmission, water supply, structural construction, and OCTG.
| Diameter Range | Pipe Size | Wall Thickness | Material Grade | Welding Method |
|---|---|---|---|---|
| 76–219mm | 3"–8" | Up to 12.7mm | Up to X-80 | HFIW |
| 168–508mm | 6"–20" | Up to 19mm | Up to X-80 | HFIW |
| 219–630mm | 8"–25" | Up to 19mm | Up to X-80 | HFIW |
| 244–660mm | 9"–26" | Up to 19mm | Up to X-80 | HFIW |
| Max pipe length: Up to 24m. Standards: API 5L, API 5CT. | ||||
Maximize profitability with premium quality at competitive costs
Exceptional consistency reduces waste and improves grading
Multiple sizes on one line, minimizing downtime
Full diameter range without roll changes
Direct access to premium markets
Weld seam achieves 90%+ of base material strength
Contact us today to learn how our ERW API Pipe Plants can elevate your manufacturing capabilities.