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Henkel’s LOCTITE Composite Pipe Repair System has been certified by DNV GL, the certification body serving the oil, gas and marine engineering sectors. The all-in-one repair system has completed a rigorous test programme by DNV GL that spanned more than two years, to ensure the products’ conformity with global quality standard ISO/TS 24817. This standard defines the design, installation, test and inspection criteria for the use of composite repair systems for oil and gas pipelines and pipework carrying petrochemicals.

One of the first companies to take advantage of this combination in the UK is Bilfinger Industrial Services, a supplier to the UK process, petrochemical, oil and gas and power industries. The company delivers long-term engineering and maintenance solutions for its customers’ business and considers the LOCTITE Composite Pipe Repair System an ideal addition to its armoury.

Central to the LOCTITE Composite Pipe Repair System is a resin-based composite material reinforced with fibres. It is similar to materials developed by Henkel that are already serving manufacturers of rotor blades for wind power generation or lightweight components for the automotive industry. When used for steel pipelines, the composite reinforces the damaged pipe sections while also protecting them against renewed corrosion.

The ISO/TS 24817-certified system is suitable for repairing both Type A (non-through-wall) and Type B (through-wall) defects, covering repair classes 1–3. In addition to straight pipes, the system can be used to repair other structures and components such as bends, tees, reducers and flanges. 

The repair process

  • The first step in the repair procedure is to clean and sandblast the surface of the damaged area. As this treatment makes the substrates susceptible to flash rust, Henkel recommends applying the corrosion inhibitor, LOCTITE SF 7515, to provide immediate, temporary protection.
  • For Type A defects, the original outer pipe diameters need to be restored by filling the cavities with LOCTITE EA 3478, a proven ferro-silicone filled epoxy compound that provides excellent compression strength. This product was specifically developed for renewing surfaces subject to compression, thrust, impact and harsh environments.
  • The pipe is then wrapped with high-strength, glass-carbon fibre tape, LOCTITE 5085, that has been impregnated with a temperature-resistant, two-part epoxy resin, LOCTITE PC 7210. This product is designed for bonding steel substrates and exhibits high adhesion.
  • The repaired section is finally sealed with a sprayable ceramic topcoat, LOCTITE PC 7255, a two-part epoxy that is WRAS approved. The resultant composite repair effectively reinforces steel pipes for continued duty under high pressure and thermal cycling while increasing their chemical resistance.

Henkel is the world market leader in state-of-the-art industrial adhesives, sealants and surface treatment products for a wide variety of engineering applications. Its leading brands for the industrial market are Loctite, Bonderite, Teroson, Aquence and Technomelt.

Strong customer focus, research and innovation, consistent quality and sustainable business practices have contributed to its record of success, as has continuous improvement in both its products and methods of manufacture.

The company applies its expertise to the entire value chain across the engineering sector. Whatever you build, manufacture, assemble or repair, its technical consultancy service will provide all the assistance and training you need to ensure you have the best product and the skill to apply to its best advantage.

Henkel brands are internationally renowned for their proven reliability and performance and the scope of the company’s product programme extends from cleaning and pre-treatment through to bonding, sealing, filling and protecting, coating and lubricating. 

Henkel is the only adhesive manufacturer to offer a comprehensive range of products that are hazard-label free. Its Loctite Health and Safety series is suitable for the lion’s share of engineering applications and includes thread lockers, thread sealants, gasketing adhesives, retaining compounds and instant adhesives.

As both the product and its method of application dictate the quality of process, Henkel also has considerable expertise in the supply of dedicated dispensing equipment that, if necessary, can be bespoke to the application. This equipment ensures the product is applied quickly, cleanly, accurately and economically.

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