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The Loctite composite repair system from Henkel, certified according to ISO/TS 24817, 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, other components such as bends, tees, reducers or flanges can be repaired.

The first step in the repair procedure is to clean and sandblast the surface in the repair area. Since blasted metal surfaces are extremely susceptible to flash rust, Henkel recommends applying the Loctite SF 7515 corrosion inhibitor as a surface treatment providing temporary protection.

In case of Type A defects, the original outer pipe diameter needs to be restored by filling the cavities with Loctite EA 3478. The pipe is then wrapped with Loctite 5085 high-strength glass carbon-fibre tape that has been impregnated with the Loctite PC 7210 temperature-resistant, two-part epoxy resin.

This adhesive has been specifically engineered for bonding to steel substrates and exhibits exceptionally high adhesion. The repaired section is then sealed with the Loctite PC 7255 sprayable ceramic topcoat. The composite repair system thus reinforces steel pipes for continued duty under high pressure and thermal cycling while increasing their chemical resistance.

Key features and benefits

  • The system eliminates the need to replace piping components. Corroded pipes can be repaired in situ, without any interruption to operations and even with high internal pressure, thus avoiding stoppages and commercial losses.
  • The quality achieved by the repair can increase the lifetime of steel pipelines by up to 20 years.
  • To maximise safety and efficiency, Henkel has developed a software tool to calculate exactly how the repair should be executed. Henkel has also had this calculation tool certified by DNV GL.
  • To ensure that the repair system is properly applied at all times in practice, companies and technicians who are to perform such work must undergo training by the provider of the system. This is specified in the ISO certification and required by DNV GL. Henkel has developed a tailor-made training programme to meet these requirements.
  • Applicators can also have their full operations validated by Henkel. Certification is based on passing an audit that Henkel conducts at the respective company’s premises. 

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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