Buried coating steel 3Layer PE pipeline anticorrosion joint PE Heat Shrink Sleeve
This Specification defines the minimum requirements for the materials and application of
Heat Shrinkable Sleeves to be applied around the girth weld areas, bends on line pipe, and
part of the coated pipe where coating has been damaged .
This specification covers the requirements for a wraparound heat shrinkable corrosion
protection sleeve system for pipeline weld joints, bare steel field bends, and part of the
coated pipe where coating has been damaged and defines the material characteristics, functional properties, qualification tests and quality control programs to be achieved by the product. At weld joints, sleeves are to be applied on pipes precoated with 3-Layer Polyethylene Coating.
The heat shrink sleeve system shall consist of a first layer of solvent free 100% solids epoxy
primer, a second layer of copolymer adhesive, and a third layer of extruded radiation
crosslinked heat shrinkable polyethylene for operating temperatures upto 140ºF.
The type and grade of heat shrinkable sleeve shall be suitable for use up to an operating
temperature of 140ºF in wet conditions (as verified by hot water immersion testing) and
shall be fully compatible with the factory applied pipeline coatings of 3-Layer Polyethylene
Coating.
This specification also defines the pre-production qualification tests to be carried out on the
field joint coating materials.
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