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Saturday , 11 September 2010
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HTLP wrap -around system
Description:
HTLP 60, HTLP80 field –joint coatings.
Construction: three layer system:
First layer; liquid epoxy, solvent free two –component.
Second layer : high shear strength copolymer adhesive.
Third layer : radiation cross-linked, high density polyethylene with PCI (permanent change indicator).
The HTLP system is wrap-around heat-shrinkable sleeve which replicates the structure and performance of mill-applied three-layer PE coatings.HTLP also has excellent compatibility and has been extensively used on many other mill-applied coatings (see below). By far the majority of the girth welds worldwide on three-layer coated pipes, diameters up to 100"(DN 2500), have been coated with HTLP.
Advantages :
- Fully resistant to shear forces induced by soil and thermal movements
- Sleeve applied over wet epoxy …. Allowing formation of strong mechanical & chemical bonds
- Superior cathodic disbandment and hot water immersion resistance
- Fully reconstruct the coating of three-layer coated pipes
- Dimpled backing provides a “ permanent change” indicator for application of heat
Technical specifications
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