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Product

HT-350 Series

Product
HT-350 Series
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 Simple Application costs

Long-term Corrosion Protection

After heating, formed corrosion protection seal, and strong backing provides outstanding waterproofing effect and high chemical resistance. SHAIC HT-330 resists impact, abrasion and ultraviolet light. 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 preheated 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.

Physical Properties

Physical Properties
Properties Test Method Values
Inner
Layer
Softening Point ASTM E28 110°C(230°F)
Lap Shear DIN 30672 (ASTM D1002) 24N/cm2(35psi)
Outer
Layer
Tensile Strength ASTM D638 17Mpa(2500psi)
Elongation ASTM D638 400%↑
Hardness ASTM D2240 45↑
Volume Resistivity ASTM  D257 1015↑Ω㎝
Dielectric Breakdown ASTM D149 27kV
Tube Impact Resistance ASTM G14 Pass holiday
detection test
with 10kV detector
Penetration Resistance ASTM G17
Water Absorption ASTM D570 0.05%↓
Cathodic Disbondment ASTM G8 20mm
Adhesion
Strength
To P.E  ASTM D1000 30N/cm
To Steel 30N/cm

Pipe Size & Tube Size

Pipe Size & Tube Size
Pipe Size Pipe O.D
(mm)
Pipe Circum-
ference
(mm)
SHAIC HT-350
Length
(mm)
Thickness(mm) Width
(mm)
DN Inch Outer Inner
50 2 60.5 190 280 0.75 1.25 450
80 3 89.1 280 350
100 4 114.3 359 440
125 5 139.8 439 520
150 6 165.2 519 600
200 8 216.3 679 810
250 10 267.4 840 970
300 12 318.6 1,000 1,130
350 14 355.6 1,117 1,260
40 16 406.4 1,276 1,420
450 18 457.2 1,436 1,590
500 20 508..0 1,595 1,750
550 22 558.8 1,755 1,910
600 24 609.6 1,914 2,060

Ordering Information

Standard Tape Type
Regular Thickness(R1)
BL-Black, YE-Yellow
18”(450m)
2”~24” (DN50-600)
1.25
R1-0.75
T-TUBE

※ Note : 1. Min. Sleeve Width=Bare Steel Width +2”(50mm) min. on each side of the pipe joint.

2. Various length is available for unique project requirements.

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