Introduction

SHAIC HT-350 is a heat shrinkable tube designed for corrosion protection of field-welded joints of plastic coated

steel pipelines. It has a thick crosslinked polyethylene backing coated with butyl rubber based mastic sealant or

hot melt adhesive. When heated the backing layer shrinks and the sealant flows and forms a reliable corrosion

protection seal onto metal and adjacent coating surfaces.

Tubular Configuration

SHAIC HT-350 needs no patch closure and should be slid over the pipe prior to welding the joint. Its unique design

reduces time for handling, positioning and installation of Patch Closure. This minimizes application time and labour

costs.

Long-term Corrosion Protection

After heating, formed corrosion protection seal & strong backing provides outstanding waterproofing effect and high

chemical resistance.

SHAIC HT-350 resists impact, abrasion and ultraviolet light.

Free from penetrating pinholes due to multi-layered structure. Excellent resistance against cathodic disbondment,

dielectric breakdown.

Simple Application

No special skills, equipments, patch closure nor primer are needed. Slide the tube over the pipe before welding

the joint. Position the tube over welded, foreign matters free and pre-heated joint. Remove the release liner and

temporarily insert spacing pads between the pipe and the tube at both upper edges of the tube to keep it away

from the pipe and to facilitate the application. Remove spacing pad when the tube is shrunk at the center, and

then move torch circumferentially to heat the left and the right half of the tube. Finish off by heating over the entire

tube vertically to ensure a uniform adhesion and by using a roller or gloved hands to remove wrinkle and air.