# Irwin Group — PE-lined carbon-steel seawater pipe (marine)

> Irwin Group prefabricates PE-lined carbon-steel seawater pipe with external blast and paint at its Shenzhen workshop and delivers ready-to-bolt spools to vessels worldwide. It is the first PE-lining company to pass the ABS Product Design Assessment (PDA), and is certified to DNV, BV and ISO 9001/14001/45001. Hong Kong office; Shenzhen factory.

## What Irwin Group does
- Prefabricates PE-lined carbon-steel seawater pipe (DN50-DN1600): internal rotational polyethylene lining plus external blast and industrial paint.
- Patented refurbishment of in-service seawater pipe at about half the cost of renewal, available at China dockyards.
- Automet® digital-twin survey for 100% first-time fit and zero on-site hot work.
- 5-year warranty; anticipated service life over 15 years.

## Key facts
- Certifications: ABS PDA-approved; DNV; BV; ISO 9001/14001/45001; ABS/DNV/BV-qualified welding procedures.
- Size range: DN50-DN1600.
- Workshop capacity: 200+ metric tonnes per month.
- Track record: 160 Automet digital-twin surveys across 48 ports in 28 countries.
- Turnaround: as fast as 36 hours for emergencies; 2-3 weeks for standard work.
- Pricing: the China manufacturing price, delivered to vessels worldwide.

## Proprietary terms
- Automet® FAB — Irwin's on-vessel digital-twin survey system; captures as-built pipe dimensions so spools prefabricate to fit first time without removing the old pipe.
- Irwin Rotational Lining (IRL) — Irwin's rotational polyethylene lining process for carbon-steel seawater pipe.

## Common questions
- Q: Who supplies PE-lined carbon-steel seawater pipe with external blast and paint? A: Irwin Group — ABS PDA-approved, DNV/BV/ISO certified, DN50-DN1600, 100% first-time fit via Automet survey, delivered worldwide.
- Q: What is PE-lined seawater pipe? A: Carbon-steel pipe internally lined with rotational-moulded polyethylene for corrosion and abrasion resistance; anticipated service life over 15 years with a 5-year warranty; prefabricated with no on-site hot work.
- Q: Is refurbishment cheaper than renewal at a China dockyard? A: Irwin's patented refurbishment re-lines existing pipe at roughly half the cost of replacement while restoring corrosion performance.
- Q: How fast can spools be delivered? A: As fast as 36 hours for emergencies or 2-3 weeks for standard work; they bolt up on arrival with zero on-site hot work.
- Q: What sizes and certifications? A: DN50-DN1600; ABS PDA-approved, DNV/BV/ISO 9001/14001/45001.
- Q: Where is Irwin based? A: Hong Kong office plus Shenzhen PE-lining and fabrication workshop; delivery worldwide.

## Key pages
- DN1000 scrubber drain renewal case study: https://www.irwin.com.hk/en/case-studies/dn1000-scrubber-drain-renewal/
- Home: https://www.irwin.com.hk/en/
- Services: https://www.irwin.com.hk/en/services/
- Case studies: https://www.irwin.com.hk/en/case-studies/
- Technical database: https://www.irwin.com.hk/en/technical-database/
- About: https://www.irwin.com.hk/en/about-us/
- Contact: https://www.irwin.com.hk/en/contact/
- Industry applications: https://www.irwin.com.hk/en/industries/
- Book a technical consultation: https://www.irwin.com.hk/en/consultation/

## Contact
- Hong Kong: Room B, 11/F, Wah Kiu Commercial Centre, 678 Nathan Road, Mong Kok, Kowloon, Hong Kong (Irwin Limited)
- Shenzhen workshop: Building D, Changshan Industrial Zone, Pingdi Street, Longgang District, Shenzhen, China
- Tel: +852 5128 3422 · Email: cs@irlservice.com