RapidBolt
NORSOK & ASTM Bolting Supplied to North Sea Oil and Gas
NORSOK M-650 qualified-route super duplex, Inconel and ASTM A193 B7 / A320 L7 stud bolts supplied to UK and Norwegian North Sea operators, with EN 10204 3.1 / 3.2 certification.
Aberdeen · Great Yarmouth · Teesside · Stavanger · Bergen · Esbjerg
Exported to North Sea
Bolting engineered for North Sea conditions.
North Sea operators run some of the most demanding bolted joints in the world: cold, chloride-heavy seawater, sour production, subsea equipment and decommissioning work, all under strict documentation requirements from UK and Norwegian operators.
We supply super duplex UNS S32760 and S32750, Inconel 625 and 718, 6Mo and A320 L7 / L43 low-temperature bolting alongside A193 B7 / B7M and A194 2H / 2HM. Where NORSOK M-650 qualified manufacturers are specified, this is stated and confirmed at quotation.
Every order carries EN 10204 3.1 or 3.2 certification with heat-number traceability, and can be kitted per joint list for platform shutdowns, subsea campaigns and fabrication yards.
North Sea bolting is judged on its paperwork as much as its metallurgy. Certification, traceability and grade are confirmed before anything ships.
Specialty fasteners. Material integrity.
ASME inch sizes from 1/4″ to 6″
| ITEM | IMPERIAL | METRIC | STANDARD |
|---|---|---|---|
| Flange stud bolts (B7, B7M, L7, B16) | 1/4" – 6" dia, UNC / 8UN | M5 – M150 | ASME B16.5 / B16.47 lengths |
| Heavy hex bolts | 1/4" – 6" dia | M5 – M150 | ASME B18.2.1 |
| Heavy hex nuts (2H, 4, 7, 8M) | 1/4" – 6" | M5 – M150 | ASME B18.2.2 |
| Duplex / super duplex / nickel alloy studs | 1/4" – 6" dia | M5 – M150 | ASME B1.1 threads |
UNC, UNF and 8UN threads to ASME B1.1. Sizes listed are typical enquiry ranges; final size, grade and quantity are confirmed per RFQ.
Where we deliver in North Sea
Orders are certified and consolidated at our Brisbane hub and shipped by air or sea freight to your nominated consignee or forwarder in the UK, Norway or elsewhere on the North Sea. Transit is confirmed at quotation. Import duties are the buyer's responsibility.
Shipping terms for North Sea
Sectors we supply in North Sea
Common North Sea supply requirements
From carbon to super duplex.
Held inventory and qualified mill access across the grades North Sea projects specify most.
Certified to the standards North Sea projects specify.
Certification packs are compiled and transmitted before dispatch so QA review and customs clearance happen in parallel with freight, not after it. Testing & certification
Questions North Sea buyers ask.
Do you supply bolting to UK and Norwegian North Sea projects?
Yes. Energy Materials Group supplies certified stud bolts, nuts, washers and special fasteners to UK and Norwegian North Sea operators, contractors and fabrication yards, quoted to your nominated Incoterm.
Can you supply NORSOK M-650 bolting?
Where NORSOK M-650 qualified manufacturers are specified, we source through that route and state it on the quotation. Qualification status is confirmed per order, not assumed.
Which grades are common for North Sea service?
Super duplex UNS S32760 and S32750, Inconel 625 and 718, 6Mo and A320 L7 low-temperature bolting are common, alongside A193 B7 / B7M with A194 2H / 2HM nuts. Grade selection follows your engineering specification.
How are UK and Norway import duties handled?
Every quotation states HS code and country of origin so your broker can confirm treatment. Import duties are the buyer's responsibility, and this is not customs advice.
Supply across the region
Jurong Island · Tuas · Pasir Panjang · Sembawang · Loyang
Kuala Lumpur · Kerteh · Gebeng · Pengerang · Bintulu · Labuan
Jakarta · Cilegon · Balikpapan · Bontang · Papua LNG region · Batam
Auckland · New Plymouth & Taranaki · Whangārei · Taupō · Christchurch
Port Moresby · Lae · Kutubu · Hides · Porgera · Lihir · Ok Tedi
Brisbane HQ · national supply hubs
Working on a North Sea project?
Send drawings, a joint list or a bill of materials — we'll return a technical quote with delivered lead times and your nominated incoterms.