Heat Shrinkable Tube -SHAIC HT-350

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 ConfigurationSHAIC 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 ProtectionAfter 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 ApplicationNo special skills, equipment, patch closure nor primer is needed. Slide the tube over the pipe before welding the joint. Position the tube over welded, foreign matters free and preheated joint. Remove the release liner and temporarily insert 'spacing pads' between the pipe and the tube at both upper edges of 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. Physical Properties Properties Test Method Values Mastic Hot Melt InnerLayer Softening Point ASTM E28 105°C(221°F) 85°C(185°C) Lap Sheear DIN30672 (ASTM1002) 24N/cm2(35psi) 28N/cm2(40psi) OuterLayer Tensile Strength ASTM D638 17Mpa(2500psi) 17Mpa(2500psi) Elongation ASTM D638 400%? 400%? Hardness ASTM D2240 45? 45? HeatAging Elongation After 70days ASTM D638(DIN 30672) 528% 528% After 100days 524% 524% TensileStrength After 70days 196N/10mm 196N/10mm After 100days 191N/10mm 191N/10mm Volume Resistivity ASTM D257 1015? 1015? Dielectric Breakdown ASTM D149 25kV 25kV Tube Impact Resistance ASTM G14 Pass holiday detection test with 15kV detector Pass holiday detection test with 15kV detector Penetration Resistance ASTM G17 Peel Strength ASTM D1000 30N/cm 62N/cm Water Absorption ASTM D570 0.1%? 0.1%? Cathodic Disbondment ASTM G8 15mm 7.9mm AdhesionStrength To P.E ASTM D1000 24N/cm 34N/cm To Steel 32N/cm 64N/cm Pipe Size & Tube Size Pipe Size   Pipe O.D(mm) PipeCircumference(mm) SHAIC HT-350 DN Inch Length(mm) Thickness(mm) Width(mm) Outer Inner 5080100125150200250300350400450500550600 2345681012141618202224 60.589.1114.3139.8165.2216.3267.4318.6355.6406.4457.2508.0558.8609.6 1902803594395196798401,0001,1171,2761,4361,5951,7551,914 2803504405206008109701,1301,2601,4201,5901,7501,9102,060 1.25 0.75 450 Ordering Information Standard Tube Type Regular Thickness R1 BL-Black, YE-Yellow 18"(450mm) 2"~24"(DN50-600) 1.25 R1-0.75 T-Tube *Note1. Min. Sleeve Width=Base Steel Width + 2"(50mm) min. on each side of the pipe joint2. Various width, length and thickness are available for project requirements.