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Strong connections. Purpose-built bolts and fasteners for Oil & Gas

Our approach is informed by 50+ years of experience delivering bolts for use in the harsh conditions of the North Sea Oil & Gas fields. All our components adhere to the highest industry standards. And because we use cutting edge automation, you are guaranteed consistent quality. Your order can even be fast tracked if needed. Bring us your design, and our experts will consult you on the ideal custom solution. We rigorously test your product before shipping it using our global logistics network.

The hightly automated producer that can handle large diameter bolts to API 20E BSL-3 standard. The strongest connection for subsea stacks, cranes and derricks. The widest logistical reach and closest working partnerships.

High standards for tough conditions

To give you maximum safety our components are forged to the highest industry standard - API 20E BSL-3. And because we do this via one of the industry’s only fully-automated production lines, we can deliver results that surpass expectations.

Durability and consistent performance

When you are dealing with difficult operational conditions - pressure and temperature fluctuations, humidity, and high salinity - it is essential that your components consistently perform. Our automated production processes guarantee the same high quality time after time.

Capacity to meet
your demands

Whether you require small batch or large scale production, we have the capacity and processes to match. A capacity to produce 20,000 tons of bolts a year, and our special bolts for oil & gas come with the API monogram stamp of conformity. Our fully automated production lines mean we can produce specially tailored small batch orders and fast track production.

In-house production
and testing

All critical processes are performed in-house and all our products are rigorously tested. So you can trust us to deliver the highest quality results. And for that extra layer of protection, we can organize third party inspections.

Simple to maintain
and install

Our products are all designed to be simple to install. For added convenience, we supply pre-lubricated fasteners on demand. You can also choose from a range of smart bolts, for example those with RFID chips integrated. Smart bolts can provide you with added data and intelligence - for example, on batches, measured value and certification.

Fully customizable
solutions

We not only deal with standard solutions. You can bring to us your drawings or specifications, and our team of experts will partner with you to create and manufacture a customized component that fully meets your needs.

Corrosion-resistant
coating

A range of coatings are available that can match your exact operational specifications. We will advise you on the best option for your needs. You can select from ​Plain, Phosphate and Xylan.

Production powered by green energy

Our production facility in Norway is connected to the Norwegian power grid and operates using 98% renewable electricity. This is sourced from hydro-electric facilities. Given the energy intensive processes required to manufacture high quality, durable bolts, our use of renewable energy makes a significant contribution to lowering the total embodied carbon of your final product.

Our Oil & Gas
solutions

Product scope from production acc to API 20E, BSL1-2-3

  • Fully machined bolts, nuts and washers 3/4” – 6”. Property classes acc. to ASTM
  • Heavy hex bolts (forged) 3/4” – 4”. Property classes acc. to ASTM
  • Heavy hex nuts (forged) 3/4” – 3”. Property classes acc. to ASTM
  • Double-End stud bolts 3/4” – 4”. Property classes acc. to ASTM
  • Tap end stud bolts 3/4” – 4”. Property classes acc. to ASTM
  • All threaded stud bolts 3/4” – 4”. Property classes acc. to ASTM
  • Riser bolt inserts and washers 1-1/2” – 5”. Property classes acc. to ASTM
  • Riser & BOP bolts: 1/2” – 4”, (Forged) 5”– 6” (Machined)
  • In addition to norm regulated items Dokka Fasteners also manufactures engineered products acc. to drawing and specification.
  • 3rd party inspection upon request.
  • Surface coatings available: Plain, Phosphate, Xylan.

Oil & Gas
Components

Special bolts

Riser Bolts

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Special bolts
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Riser Bolts

Related data sheets to download

Oil & Gas Industry data sheet

Download

Dokka Fasteners brochure

Download

Oil and Gas Brochure

Download

Durable fasteners from
the highest quality material

All of our fasteners are produced from black steel, the most durable material available for this purpose. Then we find the optimal combination of alloys, grades and treatments for rugged, durable fasteners that meet your project needs.

Different grades

Select from 8.8, 10.9, 12.9, L7 (ASTM) or L43 (ASTM) depending on your project needs.

Range of alloys

A number of different alloys are available to ensure optimal performance for your project.

Customized materials

We have highly-experienced professionals on hand to advise you on the specific combination of grades, alloys and treatments for your use case.

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Different grades

Select from 8.8, 10.9, 12.9, L7 (ASTM) or L43 (ASTM) depending on your project needs.

02
Range of alloys

A number of different alloys are available to ensure optimal performance for your project.

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Customized materials

We have highly-experienced professionals on hand to advise you on the specific combination of grades, alloys and treatments for your use case.

Added Value
Services

All services

Our experienced technical department is on hand to provide technical feedback and comments on your drawings and specifications.

We provide plain coating in-house. Via our network of trusted subcontractors we can source Phosphate and Xylan coating for your components.

We have a Fast Track production service in place for dramatically shorter lead times. Thanks to our fully stocked inventory of heat-treated blank bolds, we can rapidly deliver large diameter bolts in a range of lengths. We can even offer this for small production runs.

Connecting the Dots:
How our partnership works

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Understanding your needs

Once you’ve got in touch with us, our experts will conduct a needs assessment to better understand exactly what you need. We’ll factor in everything from fasteners types, to material grade, alloy and treatment, even any certification or compliance that might be required.

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Quotation

We present a full quotation for services, taking into account your timeframe, budget and project requirements.

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Manufacturing the fasteners

At our fully-automated production facilities in Europe, we manufacture your fasteners to the highest quality standards. In our Quality Inspection Lab, we put your fasteners through a range of tests before shipping.

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Receiving the fasteners

We supply our fasteners to locations around the globe. We provide inventory management globally through our use of Würth logistics' local facilities.