Composite fastening systems replacing steel

Preventing corrosion: Chemical, Galvanic, Gas, Salt

In environments where harsh conditions abound, maintenance of corroded equipment is a costly concern. Often the weakest points in a system – the joints – are most at risk due to corrosion of the metal fasteners used.

Non-metallic fasteners in a variety of material types offer several options for galvanic isolation, corrosion prevention and thermal insulation.

 

Comparing mechanical strength

Non-metallic fasteners are sometimes overlooked, as they are believed to lack the necessary mechanical requirements for a given application. The Durostone range rises to this challenge, with tensile strengths up to 500 MPa and breaking loads of 180 kN (for an M30 threaded rod and nut).

Where the required mechanical strength cannot be met, Durostone sleeves and washers still provide protection against galvanic corrosion and thermal energy flow.

To suit different applications, there are a range of Durostone grades on offer, for added fire, thermal or electrical protection. For less demanding work, there is also a Lignostone fasteners range (densified wood).

 

Chemical and weather resistance

Durostone® fasteners are particularly resistant against aggressive fluids and gases, resistant to transformer oil and dielectric liquids and highly UV and weather resistant. Commonly used in chemical equipment, flue gas desulphurisation and cable trays, onshore and offshore technology, seawater desalination plants and wastewater treatment plants.

Are composite fasteners right for you?

If you're got an application in mind, we'd love the chance to work with you to evaluate the potential benefits that composite fasteners can provide.