Covalence
WHAT IS COVALANCE ?
- Covalence sleeves are offered in a two-layer and three-layer construction that compliment a wide range of pipe coating applications both onshore and offshore. The Covalence DIRAX system is a patented three-layer formulation designed specially for HDD installations. Covalence® also provides sleeves for sealing in the district heating and cooling markets.
- Covalence heat shrink sleeves meet all relevant global standards (ISO, EN, AWWA, NACE, GOST) ensuring suitability for pipeline applications and special field conditions. Covalence sleeves come in various thicknesses and can accommodate any diameter pipe. Easy-to-understand installation instructions are shipped with every product and clear product labelling allows rapid on-site identification.
WHY USE COVALANCE ?
Covalence heat shrink force technologies provide strong mechanical strength performance and corrosion protection for oil, gas and water transmission pipelines. With technology born of the atomic age, shrink sleeves are unique in their ability to perform safely and efficiently.
FEATURES AND BENIFITS
- Covalence® has 40+ years of proven in-service performance
- Systems conform to all pipe diameters
- Mastic-coated sleeves balance performance, economy and ease of installation
- Excellent resistance to cathodic disbondment, hot water immersion, thermal aging and soil stress at maximum-rated operating temperature
- Dimpled pattern provides a “permanent change” indicator for proper heat application
- Cost effective installation
- Products available in uni-sleeve construction with pre-attached closure patch
- DIRAX sleeves withstand the high stresses of HDD requirements
Covalence® HTLP
Covalence® HTLP80-HP system is a wrap-around heat-shrinkable sleeve which replicates the structure and the performance of factory applied three-layer PE coatings.
Covalence® DIRAX
The DIRAX system is a wrap-around heat shrinkable sleeve reinforced with fibre glass. DIRAX is designed to protect girth welds against corrosion.
Covalence® WPC
WPC is a two-layer field-joint coating system designed for corrosion protection of pipelines operating at ambient temperature.
Covalence® CSEM-F CASEAL (US)
CSEM-F/CASEAL (US) is a heat-shrinkable, wrap-around sleeve with a very high shrink ratio,specially developed for casing/service pipe sealing.
Perp Coating Repair Patch
Repair system for damaged mill-applied PE coating. Covalence® PERP is a heat-applied patch which, in combination with mastic filler.
Perp Melt Stick Coating Repair
PE MELT-STICK is a heat-sensitive, PE copolymer-based stick used for small superficial, damage (scratches) to PE-coatings where the damage does not extend to the bare metal.
S1137 Filler
CSEM-F/CASEAL (US) is a heat-shrinkable, wrap-around sleeve with a very high shrink ratio,specially developed for casing/service pipe sealing.
S1301-M Primer
S1301-M primer is a specially formulated 100% volume solids (solvent-less) 2 component epoxy.