Stainalloy
Your global authority for Exotic Steel Piping Packages
Duplex | Super Duplex | Nickel Alloy 625 – 800 – 825 | Austenitic Stainless Steel | Low Alloy Steel | High Yield Carbon Steel.
High-Performance Steel,
delivered with superior reliability
Your global project partner and stockist for exotic steel pipes, fittings, flanges and related products.
With over 40 years of experience and in-depth expertise in materials and production technology, Stainalloy delivers a wide range of value-added services to customers worldwide.
- 10,000 m² of certified exotic alloys in stock
- Fast global delivery with full traceability
- Expert support for complex industrial projects
- Quality assurance & technical documentation
- Seamless logistics from stock to site
Products
Access our broad range of NORSOK-compliant materials, with stock items ready for immediate delivery.
Our range includes Pipes, Fittings, Flanges, Plates and Engineerd Products, fully certified and compliant with your specifications. Available in Duplex, Super Duplex, Nickel Alloy 625/800/825, Austenitic Stainless Steel and High Yield Carbon Steel.
Engineered Products
Pipes | Seamless and Welded Pipes 1” to 48”
Fittings | Seamless and Welded 1” to 48”
Flanges | Flanges 1” to 48” and 150# to 2500#
Plates | Dedicated stock for flexible supply
Materials
Available in seamless and welded pipes, fittings, flanges, plates and engineered products starting from NPS ½” up to 48″.
Duplex
UNS S31803 / S32205
Super Duplex
UNS S32750 / S32760
Nickel Alloy 625
UNS N06625
Nickel Alloy 800
UNS N08800/N08810/N08811
Nickel Alloy 825
UNS N08825
Austenitic Stainless Steel
300-series stainless steel
Low Alloy Steel
A/SA335 P11/P22/P5/P9/P91
High Yield Carbon Steel
API 5L X42, X46, X52, X56, X60, X65, X70, and X80
“Stainalloy delivered exactly what we needed. On time, fully certified, and with zero surprises. Their team felt like an extension of ours.”Project Manager, FPSO Construction
Everything for your project
Total control, from mill to site
We source your required materials from our global network of approved suppliers and arrange inspections, expediting reports, and international transport, ensuring your operations run without interruption.
From material quality checks to supplier follow-up, documentation, and full-package delivery, our dedicated project teams support you every step of the way.
- Material specification & sourcing
- Procurement & certification
- Document control & quality checks
- Packing & global logistics
- After-sales coordination
Industries we serve
Trusted by high-spec industries
We have a 40-year track record in oil & gas, power generation, and desalination. Wherever performance, durability and precision matter most: that’s where we add value.
Upstream Oil & Gas
Specialized piping materials for FPSOs and production facilities. Manufactured to perform in the harshest offshore and onshore environments.
Downstream Petrochemicals
Materials for hydrogen, ethylene, ammonia and more. Supporting complex plant construction with reliable supply and deep industry knowledge.
Water Desalination
Corrosion-resistant piping solutions for high-pressure RO systems and seawater treatment. With the stock and expertise to keep your project moving.
Renewables
Materials that meet the demands of green hydrogen, biofuels, and geothermal. Supporting your energy transition with reliability and insight.
FAQ
We welcome any question you might have.
Can’t find your answer here? Contact one of our experts, they are only too happy to share their knowledge with you.
What grades do you stock for offshore use?
| Seamless Pipes | Duplex, Super Duplex | ½” – 8” Sch. 10S – Sch. XXS |
| Seamless Pipes | Inconel | ½” – 6” Sch. 10S – XXS |
| Seamless Pipes | X65 | Project sizes |
| Welded Pipes | Duplex, Super Duplex | 10” – 24” Sch. 10S – 80 |
| Fittings | Duplex, Super Duplex | ½” – 24” Sch. 10S – XXS |
| Flanges | Duplex, Super Duplex | ½” – 24” 150 – 2500 Lbs |
How do you manage document control?
We manage your entire vendor document flow, from first submittal to final approval. Your deadlines stay on track, and your delivery dates are protected.
Our team compiles complete Vendor Data Books, including full factory documentation, traceability, test records, and certificates. All ready for client handover.
We chase the right documents, route them for review, follow up on delays, and secure factory approvals. No missing pages. No last-minute surprises.
Do you support third-party inspections?
Third-party inspections and 3.2 upgrade testing are fully coordinated to guarantee compliance with international standards and client specifications.
Quality control is embedded throughout the process.
All products undergo comprehensive testing, including:
- 100% visual and dimensional inspection
- 100% certificate verification
- Positive Material Identification (PMI)
- Ferrite, LDP, and other non-destructive testing
- Chemical and mechanical analyses
Joran de Jong
Sales Engineer
Etienne van Zuilekom
Senior Sales Engineer
Guido Donk
Senior Sales Manager
Stephan de Groot
Sales Manager
Marten Griffioen
Manager Operations
Rowan de Visser
Senior Sales Engineer Stock
Germán Gómez
Head of Stock Sales
How may we help you?
Send us your enquiry or request a quote.
Let’s talk about your material needs, project specs, or delivery timelines. Our team is ready to assist.
Behind the spec
Stainalloy news and insights
Successful completion of our ISO 9001:2015 audit surveillance.
No remarks, no surprises – just solid teamwork and commitment to doing things right.
Rapid and Reliable: 6,000 kg Super Duplex in one week from our warehouse to UAE
From order confirmation to meticulous Third-Party inspection and final air freight.
Thank you for your visit during Stainless Steel World.
We enjoyed the conversations and new connections forged – just like our alloys: built to last, reliable and high quality. Let’s keep the pipeline flowing in 2026!
Upgrading from EN10204 3.1 to 3.2 Certification / 3.2 Intent
A 3.2 Certificate or 3.2 Intent offers a higher level of assurance — not just about the material, but about the process behind it. It’s the baseline for trust.