NORSOK Approvals
NORSOK-M-501 Approved Coating Systems
Protect Critical Offshore Assets with Certified, High-Performance Coatings
Offshore environments are some of the harshest in the world — with extreme weather, constant moisture, and heavy operational demands. The NORSOK-M-501 standard was created to ensure the durability, safety, and long-term performance of coatings used in these conditions.
At New Guard Coatings, we supply fully approved systems for all 9 NORSOK-M-501 categories, through trusted global brands like Jotun Paints and PPG Protective & Marine Coatings.
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✅ Why Choose Our NORSOK-M-501 Solutions?
✔️ Fully Compliant Systems – We provide coating solutions tested and certified to meet all NORSOK-M-501 system requirements — from structural steel to submerged areas and high-heat applications.
✔️ Partnered with Industry Leaders – We work closely with Jotun and PPG to ensure top-tier product quality, proven performance, and up-to-date certification.
✔️ Expert System Selection – Not sure which NORSOK category you need? Our technical team will guide you to the most cost-effective system tailored to your operating environment and budget.
✔️ Proven Offshore Protection – Designed to withstand the toughest offshore conditions, our coatings deliver long-term corrosion resistance, fire protection, and environmental resilience.
✔️ Cost Efficiency – We understand that both protection and project economics matter. That’s why we’ll recommend the most beneficial system setup to align with your business needs.
What is NORSOK-M-501?
Originally developed in 1994 by the Norwegian petroleum industry, NORSOK standards are designed to ensure safety, durability, and cost-efficiency in oil and gas operations. NORSOK-M-501 specifically outlines coating systems for use in offshore structures and equipment.
These standards go beyond basic international regulations, offering a globally respected framework for protective coatings in extreme environments.
Our NORSOK-M-501 Coating Systems Cover:
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Structural steel exposed to sea spray and harsh weather
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Submerged zones and splash zones
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Internal steel tank linings
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Cement and epoxy-based fire protection
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Stainless steel and galvanised surfaces
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High-temperature and insulated pipework
Talk to Our NORSOK Coatings Experts
Whether you're specifying for a new offshore platform, maintaining existing assets, or working with strict compliance requirements, New Guard Coatings is here to help.
Get expert advice, technical support, and the right coating system for your project.
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| System | Description |
|---|---|
| System 1 (pre-qualified) | Carbon steel with maximum operating temperature < 120°C (248°F) • Structural steel • Exteriors of equipment, vessels, piping and valves (not insulated) |
| System 2A | Carbon steel surfaces. Thermally sprayed aluminum or alloys of aluminum at 200 µm / 8.0 mils |
| System 2B | Carbon steel surfaces. Thermally sprayed zinc or alloys of zinc at 100 µm / 4.0 mils |
| System 3A–3G (System 3B pre-qualified) | Internal surface of carbon steel tanks |
| System 4 (pre-qualified) | Walkways, escape routes and lay down areas |
| System 5A (pre-qualified) | Epoxy-based fire protection |
| System 5B (pre-qualified) | Cement-based fire protection |
| System 6A | Uninsulated stainless steel when painting is required. Aluminum when painting is required |
| System 6B | Hot-dipped, galvanized steel when painting is required |
| System 6C | Insulated stainless steel piping and vessels at temperatures < 150°C (302°F) |
| System 7A (pre-qualified) | Carbon and stainless steel in the splash zone |
| System 7B (pre-qualified) | Submerged carbon and stainless steel ≤ 50°C (122°F) |
| System 7C (pre-qualified) | Submerged carbon and stainless steel > 50°C (122°F) |
| System 8 | Structural carbon steel with maximum operating temperature ≤ 80°C (176°F) in internal and fully dry and ventilated areas |
| System 9 | Bulk-supplied carbon steel valves with maximum operating temperature up to 150°C (302°F) |
Free technical assistance, product support and guidance are all available – just give us a call on 01937 586311, email us at ukenquiries@newguardcoatings.com or use our online Chat/Messaging system. We’re here to help you.
Please download the PDF guide for our NORSOK M501-6 Approved Coating Systems from PPG Protective & Marine Coatings.