HT-330 Series
Product HT-330 Series
SHAIC HT-330 is a hand wrapped heat shrinkable tape designed for corrosion protection of straight pipes, fittings, bends, elbows and other irregular configurations. It has a crosslinked polyethylene backing coated with butyl rubber based thermoplastic adhesive. When heated the backing layer shrinks and the adhesive flows and forms a reliable corrosion protection seal onto metal and adjacent coating surfaces. SHAIC HT-330 needs no primer nor patch closure and reduces application time and labour 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. Its superior flexibility provides easy and reliable application for irregular configurations of fittings, bends and elbows and small diameter of straight pipes.
Wrap spirally the tape over foreign matters-free and preheated surface, beginning at least 25~50mm (1~2") onto pipe coating. Wrap the tape with enough tension to obtain conformability and with minimum 50% of overlapping, while removing the release liner. Warm the end part of the tape and press down firmly. Using a torch, start at the edge of the tape and heat circumferentially around the coated pipe.
Finish off by heating over the entire tape vertically to ensure a uniform adhesion and by using a roller or gloved hands to remove wrinkle and air.
Physical Properties
| Properties | Values | Test Method | ||
|---|---|---|---|---|
| Inner Layer | Softening Point | 99°C(210°F) | ASTM E28 | |
| Lap Shear | 20N/cm2(29psi) | DIN 30672 (ASTM D1002) | ||
| Outer Layer | Tensile Strength | 53N/cm(76psi) | ASTM D638 | |
| Elongation | 450%↑ | ASTM D638 | ||
| Hardness | 40 | ASTM D2240 | ||
| Dielectric Breakdown | 23kV | ASTM D149 | ||
| Tape | Water Absorption | 0.05%↓ | ASTM D570 | |
| Cathodic Disbondment | 15mm | ASTM G8 | ||
| Adhesion Strength |
To P.E Lining | 20N/cm | ASTM D1000 | |
| To Steel Pipe | 30N/cm | |||
Application Table (Length of Tape Required)
| Pipe Size | Tape Width | Tape Length |
Length of tape required is for 3D(90°) With and overlap of 50%, a line coating cutback of 150mm and a 50mm overlapon pipe coating.
For other sizes, the following
formula can be used:
Length of tape=Pipe Ø x 3.14 x L/W L=length of area to be covered. W=1/2 of tape width(50% overlap) |
|||
|---|---|---|---|---|---|---|
| DN | Inch | (mm) | (Inch) | (m) | (ft) | |
| 25 | 1 | 50 | 2 | 2.8 | 9.2 | |
| 40 | 1.5 | 50 | 2 | 4 | 13.1 | |
| 50 | 2 | 50 | 2 | 5.2 | 17.1 | |
| 80 | 3 | 50 | 2 | 8.5 | 27.9 | |
| 100 | 4 | 50 | 2 | 11.1 | 36.4 | |
| 125 | 5 | 75 | 3 | 12.3 | 40.4 | |
| 150 | 6 | 75 | 3 | 14.3 | 46.9 | |
| 200 | 8 | 100 | 4 | 16.3 | 53.5 | |
| 250 | 10 | 100 | 4 | 23.1 | 75.8 | |
| 300 | 12 | 100 | 4 | 30.4 | 99.7 | |
| ＞300 | ＞12 | 150 | 6 | formula | - | |
Ordering Information
- Standard Tape Type
- Regular Thickness(R)
- BL-Black, YE-Yellow
- 33ft(10m)
- 2”~12” (50~300mm)
- 0.7
- R-0.5
- 330-Tape
※ Note : Various width, length and thickness are available for unique project requirements.
