Covalence WPCT Shrink Sleeves from Protection Engineering for Corrosion Protection.
WPCT is a two-layer field-joint coating system for corrosion protection of pipelines operating at ambient temperature.
Covalence® WPCT is a wraparound heatshrinkable, ready-to-fit assembly for the corrosion protection of field girth weld joints in distribution and transmission systems. WPCT is compatible with standard pipe coatings. WPCT can also be used for coating bare, replacement pipe sections and large radius bends. The system is designed to be applied with minimum preheating and is ideal for large diameter water pipe.
First layer: Visco-elastic low preheat sealant adhesive.
Second layer: Radiation-cross-linked, high density polyethylene with PCI (Permanent Change Indicator.
Dimpled backing provides a ‘permanent change’ indicator for
application of heat.
High impact and penetration resistance.
Available as all-in-one unit or roll form.
Low preheat sensitivity & proven functionality.
Sealing adhesive automatically flows and repairs minor mechanical
No special equipment or skills required.
Installation is carried out directly on the cleaned and dried (preheated) pipe surface without any primer being required. During installation, the heat-shrinkable sleeve is wrapped and shrunk to form a tight fit around the joint. During recovery, the adhesive softens and flows to form a perfect bond with the pipe surface providing protection against corrosion. The radiation cross-linked outer layer forms a tough barrier against mechanical damage and moisture transmission.
Covalence WPCT Shrink Sleeve
Two-layer construction complements a wide range of pipe coatings
Top quality hot-melt, copolymercoated sleeves resist soil stresses on all pipe diameters
Mastic-coated sleeves balance performance, economy and ease of installation
Self-healing adhesive flow automatically repairs minor mechanical damage
Dimpled backing providing a "permanent change" indicator for application of heat.