System description
GuanFang 1200 HST It is a hand Hot Wrapped shrinkable tape designed for corrosion protection of straight pipes, fittings, bends, elbows and other irregular configurations.. When heated the backing layer shrinks and the adhesive flows and forms a reliable corrosion protection seal onto metal and adjacent coating surfaces.
The Polyethylene Heat shrinkable Tape needs no primer nor patch closure and reduces application time and labour costs.
Structure
The specification of the tape consists of three layers
Adhesive: Butyl rubber based hot melt adhesive
Film backing: Radiation crosslinked polyethylene
Interleaf: Antiadhesive Film Treated with Silicone
Features
After heating, formed corrosion protection seal
Strong backing provides outstanding waterproofing effect
High chemical resistance. resists impact, abrasion and ultraviolet light.
Excellent resistance against cathodic disbondment, dielectric breakdown.
Simple Application
Properties
Properties | Test Method | Typical Values | |
Inner Adhesive layer | Softening point | ASTM E 28 | 80 ℃ |
Lap shear | DIN 30672 | 20N/cm2 | |
Outer backing layer | Tensile strength | ASTM D 638 | 35N/cm |
Elongation | ASTM D 1000 | Min 400% | |
Dielectric breakdown | ASTM D 149 | 30Kv | |
Tape | Resistace | ASTM G 17 | Pass holiday detection test with 10KV detector |
Peel strength To PE linning To steel pipe | ASTM D 1000 |
20N/cm 30N/cm | |
Water absorption | ASTM D 570 | 0.06-0.08% | |
Cathodic disbondment | ASTM D G8 | 15mm | |
Application temperature |
| -10 to +60 ℃ | |
Temperature resistance |
| -50 ℃ to+ 80℃ | |
Ordering Information
Eg.: HST1200-50-6-33 BLK
HST1200 | Product Model No. | Standard ordering options |
50 | Total tape thickness inmils | 40mils(1.016mm),50mils(1.27mm),60mils(1.524mm),65mils(1.651mm) 80mils(2.0mm) 100mil (2.5mm) |
BLK | Tape backing color | Black (BLK) |
6 | Tape width in inches | 2"(50mm),,4"(100mm),6"(150mm),9"(228mm),12"(305mm)18" (450mm) |
33 | Tape roll length in feet | 33ft(10M),50ft(15M),100ft(30M) |
Note: Special specified width,length and thickness are available for unique project requirements.
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.
