Repair system for damaged mill-applied PE coating.
Covalence ®PERP is a heat-applied patch which, in combination with mastic filler, offers an economically effective and high quality repair system for factory PE pipe coatings damaged mechanically during transportation, storage and laying of pipes. PERP, PERP80 and PERP60E are designed to repair the damaged areas on line coatings, mainly 2 or 3 layer PE. PERP60E is designed to repair the damaged areas on PE coated pipes used in high shear applications, such as directional drilling.
- Sleeves: are recommended for large damaged areas (see selection table below).
- Filler tape: is used to fill the holiday, thus restoring the mill-applied coating thickness of the pipe.
- Epoxy primer: is additionally used when reinstatement of the epoxy layer is required.
Construction: Two-layer or three-layer system
- First layer: Liquid epoxy, solvent-free two-component (optional).
- Second layer: Copolymer adhesive.
- Third layer: Radiation cross-linked, high density polyethylene (unexpanded).
Installation is done with standard gas torches. To repair a damaged area, installers round out, roughen, clean and preheat the area and apply the filler tape to fill out the holiday. PERP, cut to size, is positioned onto the treated area and heated. During heating, the adhesive softens and flows to form a tight bond with the substrate. The bond strength builds up during cool-down and is fully retained after job completion.
Perp Coating Repair Patch
Covalence ®PERP is a heat-applied patch which, in combination with mastic filler, offers an economically effective and high quality repair system for factory PE pipe coatings damaged mechanically during transportation, storage and laying of pipes. PERP, PERP80 and PERP60E are designed to repair the damaged areas on line coatings, mainly 2 or 3 layer PE. PERP60E is designed to repair the damaged areas on PE coated pipes used in high shear applications, such as directional drilling.
- Adaptable repair system.
- Resistant to high shear forces.
- Excellent adhesion to commercial, PE mill-applied coatings.
- No special equipment required.
- Long lasting and high performance.
- Provides a virtually monolithic coating repair of high quality.
- Saves time with fast and convenient installation. Saves money by keeping inventory and logistics costs low.
- Makes installation fast and easy. Keeps installation costs low.