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Tapecoat HT-MB
High Temperature Tape
Cold applied coating in tape
form for high temperature
service
Basic Use
Tapecoat HT-MB High Temperature Tape is
designed to protect buried and submerged pipe, pipe type cable, pipe
joints, fittings, tanks, insulated steam lines, and other metal surfaces
from corrosion and electrolysis over a wide range of in-service
temperatures up to 250°F (121°C) in constant or peak load operating
conditions. Tapecoat HT-MB may be applied to new pipelines and to
pipelines operating at elevated temperatures.
Composition
Tapecoat HT-MB is a pre-formed, cold
applied, self-adhering coating that is impermeable to water and salt.
The specially formulated "high temperature" adhesive is laminated to a
woven polypropylene backing. The very aggressive adhesive is kept from
permanently bonding to its backing by a tough, easily removed polymer
release liner, which also prevents contamination of the adhesive prior
to its use.
Technical
Data
| Color |
Black |
| Service
temperature |
-30ºF to
250ºF (-35ºC to 121ºC) |
| Application
temperature |
-30ºF
to 185ºF (-35ºC to 85ºC) |
| Total
thickness |
30-50 mils
(0.76-1.26 mm) |
| Adhesion
(primed steel) |
250 oz/inch
width (2.79 kg/cm width) |
| Mesh Net |
| Tensile
strength |
50 lb/inch
width (8.95 kg/cm width) |
| Dielectric
strength |
Exceeds 12 kV |
| Sale crock
test |
Pass |
| Insulation
resistance |
106
megohoms |
|
Water vapor transmission rate |
0.01-0.20 g / 100 in2 / 24 hr
(0.25-3.1 g / m2 / 24 hr |
Surface
Preparation
Surface must be dean and dry. Moisture, dust,
dirt, rust or other foreign matter should be removed by scraping or wire
brushing. SSPC-SP3 Power Tool cleaning is recommended. Remove oil and
grease, etc. with suitable detergent. Remove salt and other contaminants
by high pressure fresh water cleaning. Optional cleaning method is SSPC
6 Commercial Blast.
Application
- Priming: If operating temperatures do not
exceed 180°F (85°C) TC Omniprime®
is the primer of choice. TC 7000 Epoxy has been developed specifically
for use with HT-MB when service temperatures are between 180°F and 250°F
(85°C and 121°C). Either primer can be applied by brush or roller. Allow
either primer to dry to touch before applying HT-MB.
- Tape Application: Tapecoat HT-MB is
applied by hand, with the Tapecoat Hand Wrapster #3, or by plant or
over-the-ditch tape wrapping methods. Tapecoat HT-MB is applied by
removing the release liner and spirally wrapped with minimum 50%
overlap. Wrapping tension is to be maintained to obtain conformability
of the tape to the surface being coated.
- Note: Tapecoat 2025 Rockshield (Terrashield)
is recommended in areas where rough backfill is expected.
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