SHAIC HS-340 is a heat-shrinkable wraparound sleeve designed for corrosion protection of field-welded joints of
plastic coated steel pipelines. It has a thick cross-linked polyethylene backing coated with butyl rubber based
mastic sealant or hot melt adhesive. Hot Melt or Mastic shall depend on project requirements. When heated the
backing layer shrinks and the sealant flows and forms a reliable corrosion protection seal onto metal and adjacent
Cut Sleeve is normally supplied with separate Patch Closure, which is coated with a high shear-strength
adhesive; however, there are different types and sizes to comply with individual requirements. It is supplied in bulk
rolls as well, and has super-heavy duty, heavy duty and regular thickness.
Long-term Corrosion ProtectionAfter heating, formed corrosion protection seal & strong backing provides outstanding waterproofing effect and
high chemical resistance.
SHAIC HS-340 resists impact, abrasion and ultraviolet light. Free from penetrating pinholes due to multi-layered
structure. Excellent resistance against cathodic disbondment, dielectric breakdown.
No special skills and equipments are needed. Sleeve is installed in minutes with a propane torch.
Wrap the sleeve around foreign matters-free, pre-heated surface. Fix the center of pre-heated patch closure on
the overlapped end and start heating the sleeve in the center. Move the torch around pipe circumferentially
to heat the left and the right half of sleeve. Finish off by heating vertically over the entire sleeve to ensure
a uniform adhesion and by using a roller or gloved hands to remove wrinkle and air.
SHAIC HS-340 is supplied in bulk rolls, which is cut in the field for any size of pipe. No need to drive to
warehouse and just cut customized length in the field in time that reduces inventories and saves the cost
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