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Norsk Offshore Pipe Fittings & Fasteners
Norsk Offshore Pipe Fittings & Fasteners
Pipe fittings, branch connections and industrial fasteners for offshore, oil & gas, petrochemical, marine, power generation and process applications worldwide.
Norsk Offshore provides a comprehensive range of pipe fittings and fastening components for process piping, pipelines, utilities and mechanical systems operating in demanding environments.
Our portfolio covers butt-weld, socket-weld and threaded fittings, branch connections, stud bolts, bolts, nuts and associated fastening products in carbon steel, alloy steel, stainless steel, duplex, super duplex and other specialist materials.
Products can be sourced to recognised international standards and matched to the required size, material grade, pressure rating and connection type. We support individual replacement items as well as larger piping packages for new projects, maintenance programmes, plant shutdowns and system modifications.
Certification, inspection and testing, protective treatment, export packing and international logistics can also be coordinated where required.
Pipe Fittings
Our range covers fittings used to change direction or line size, create branches, terminate pipework and connect sections of process and utility piping.
Butt-Weld Fittings
- 45° & 90° Elbows
- Long Radius & Short Radius Elbows
- Equal Tees
- Reducing Tees
- Concentric Reducers
- Eccentric Reducers
- End Caps
- Stub Ends
- Crosses
Socket-Weld & Threaded Fittings
- Elbows
- Tees
- Crosses
- Couplings
- Half Couplings
- Unions
- Caps
- Plugs
- Bushings
Nipples & Branch Connections
- Pipe Nipples
- Swage Nipples
- Weldolets
- Sockolets
- Threadolets
- Other Integrally Reinforced Branch Outlet Fittings
Fitting Materials & Grades
| Material Category | Typical Specifications / Grades |
|---|---|
| Carbon Steel | ASTM A234/A234M WPB for wrought fittings; ASTM A105/A105M for applicable forged fittings |
| Low-Temperature Carbon Steel | ASTM A420/A420M WPL6 for wrought fittings; ASTM A350/A350M LF2 for applicable forged fittings |
| Alloy Steel | ASTM A234/A234M alloy grades for wrought fittings; ASTM A182/A182M for applicable forged alloy-steel fittings |
| Austenitic Stainless Steel | ASTM A403/A403M, including commonly specified WP304/304L and WP316/316L; ASTM A182/A182M for applicable forged fittings |
| Duplex & Super Duplex Stainless Steel | ASTM A815/A815M for applicable wrought fittings; ASTM A182/A182M for applicable forged fittings, with grade selected according to service conditions |
| Nickel & Specialist Alloys | Applicable ASTM specification and alloy grade according to fitting type, service conditions and piping specification |
Note: Materials and grades shown are representative. Final material specification, fitting type, dimensions, schedule, pressure rating and certification are confirmed against the customer's RFQ and piping specification.
Fitting Standards & Connections
| Technical Requirement | Typical Options / Standards |
|---|---|
| Butt-Weld Fittings | ASME B16.9 – factory-made wrought butt-welding fittings |
| Forged Socket-Weld & Threaded Fittings | ASME B16.11 |
| Branch Outlet Fittings | MSS SP-97 – integrally reinforced forged branch outlet fittings |
| Swage Nipples & Bull Plugs | MSS SP-95 |
| Connection Types | Butt Weld, Socket Weld & Threaded |
| Dimensions | NPS/DN, wall thickness, schedule and dimensions according to the applicable product standard |
| Other Standards | EN, DIN, JIS, BS and customer/project specifications |
Industrial Fasteners
Norsk Offshore also provides fastening components for flanged piping, valves, pressure equipment, machinery and associated industrial installations.
Our range includes:
- Stud Bolts
- Fully Threaded Studs
- Hex Bolts
- Heavy Hex Bolts
- Hex Nuts
- Heavy Hex Nuts
- Washers
- Threaded Rod
- Specialist Bolting Assemblies
Fasteners can be matched to the specified material grade, thread size, length and service conditions, together with compatible nuts and associated components.
Fasteners can be matched to the specified material grade, thread size, length and service conditions, together with compatible nuts and associated components.
Fastener Materials & Grades
| Fastener Category | Typical Specifications / Grades |
|---|---|
| Alloy-Steel Bolting | ASTM A193/A193M – including B7, B7M and B16 where applicable |
| Stainless-Steel Bolting | ASTM A193/A193M – including B8 and B8M classes as applicable |
| Low-Temperature Bolting | ASTM A320/A320M – including L7, L7M and other applicable grades |
| Carbon & Alloy-Steel Nuts | ASTM A194/A194M – grade selected to suit the specified bolting and service conditions |
| Stainless-Steel Nuts | ASTM A194/A194M – applicable grade and class matched to the bolting specification |
| Duplex, Super Duplex & Specialist Bolting | Applicable ASTM specification, grade and class according to service and project requirements |
Applications
- Oil & Gas Process Piping
- Offshore Production & Utility Systems
- Refinery & Petrochemical Piping
- Pipelines & Terminal Facilities
- Steam & Condensate Systems
- Cooling Water Services
- Fuel & Lubricating Oil Systems
- Chemical & Process Lines
- Power Generation Facilities
- Marine Piping Systems
- Valve & Equipment Connections
- Maintenance & Shutdown Activities
Industries We Support
- Offshore Oil & Gas
- FPSO & Offshore Platforms
- Refineries & Petrochemical Plants
- Power Generation
- Commercial Marine & Shipbuilding
- Shipyards & Repair Facilities
- Chemical & Process Industries
- Industrial Plants
- Energy Infrastructure
- Engineering, Procurement & Construction (EPC) Projects
Technical Procurement & Project Support
Fittings and fasteners are specified by a combination of material grade, size, dimensional standard and service conditions. Connection type and pipe schedule are important for fittings, while bolting may additionally require thread size, length, grade and matching nut specification.
Our team can assist with:
- Butt-Weld, Socket-Weld & Threaded Fittings
- Branch Outlet Fittings
- Stud Bolts, Bolts, Nuts & Threaded Rod
- Carbon, Alloy & Stainless Steel Materials
- Duplex, Super Duplex & Specialist Alloys
- Material Grade Identification
- Specification & Cross-Reference Review
- Project, Maintenance & Shutdown Procurement
- Certification, Inspection & Testing Coordination
- Export Packing & Worldwide Logistics
For larger piping packages, fittings and fasteners can be coordinated with pipes, tubes, flanges and valves, allowing related materials to be consolidated within one procurement package.
Documentation & Certification
Documentation can be provided according to the product, material specification and project requirements.
This may include material test certificates, traceability records, inspection reports, dimensional documentation and applicable testing records.
Any requirements for third-party inspection, material traceability, sour-service compliance, coating or other project-specific documentation should be advised at RFQ stage.
Why Choose Norsk Offshore
Global Manufacturer & Supply Network- Marine, Offshore & Industrial Procurement Experience
- Comprehensive Piping Material Supply Capability
- Carbon, Alloy & Stainless Steel Materials
- Duplex, Super Duplex & Specialist Material Sourcing
- Technical RFQ & Material Identification Support
- Project, Maintenance & Shutdown Procurement
- Worldwide Export & Logistics Capability
Engines & GeneratorsRequest a Quotation
Need pricing or technical support?
Our team can assist with:
Spare Parts Identification
OEM & Replacement Components
Technical Procurement Support
Worldwide Export Logistics
For more detailed RFQ information, click here.