Subsea fasteners are bolts, studs and nuts used on equipment under the sea, where seawater corrosion, pressure and the cost of access make a failed joint very expensive. HAGUE FASTENERS makes subsea fasteners to the original equipment drawing in grades chosen for seawater, such as super duplex S32750 and S32760, Inconel 625 and Monel K500, with full traceability.
- Typical grades: super duplex S32750 and S32760, Inconel 625, Monel K500
- Chosen for resistance to pitting and crevice corrosion in seawater
- Made to OEM drawings without deviation, with mill certificates and heat numbers carried through
- Testing by UKAS-accredited partners where specified
Offshore Subsea Fasteners
The offshore oil & gas industry is one of the largest industry sectors HAGUE FASTENERS service with their British Manufactured High Integrity Special Fasteners.
HAGUE FASTENERS offshore oil and gas bolting are often used for high integrity systems where the reliability and critical quality are essential for the long term performance of the structures they are fitted to, none more so when used as structural components and for high pressure vessels and piping.
As with all of HAGUE FASTENERS precision manufactured components it is of critical importance that the Custom Fasteners and Superalloy Bolting are manufactured, without deviation, to the Original Equipment Manufacturers designs that provide for the required service life for the various exposure and service conditions they are designed and exposed to.
Bolting can fail for a number of reasons (e.g. overload, fatigue or corrosion). The materials selection, manufacturing methods, bolt fabrication, protective coating and the installation are all critical and need to be strictly adhered to, thus ensuring that long service performance is guaranteed. The actual service conditions and the external environment impact and maintenance will subsequently determine the service life of the bolting.
With over 40 years of Subsea Engineering experience HAGUE FASTENERS turns your critically specified designs and drawings into High Integrity Quality Assured bolts ready to fit and install within hours where necessary. HAGUE FASTENERS original concept of a”Breakdown Delivery Service” is as real today as it was 40 years ago.
Whatever the material, whatever the design, whatever the delivery, HAGUE FASTENERS is your solution.
Embracing your designs
Conforming materials selection
Respecting corrosion protection
Leading Customer Service
HAGUE FASTENERS LIMITED – Global Subsea Bolting Solutions (Since 1971).
Frequently asked questions
Which materials are best for subsea fasteners?
Super duplex S32750 and S32760, Inconel 625 and Monel K500 are typical choices because they resist pitting and crevice corrosion in seawater. The grade supplied always follows your specification.
Why do subsea bolts fail?
Common causes are overload, fatigue and corrosion, which is why the material, manufacturing method and coating must match the design.
Do you supply topside and downhole fasteners too?
Yes. We make fasteners for subsea, topside and downhole oil and gas equipment.
Related pages
Need a quote? Send your drawing, sample or specification to sales@haguefasteners.co.uk or call 01902 365865.
