I System description:
The XUNDA-T-100 series is Cold applied tape coating system for corrosion protection of Oil, Gas, Petrochemical, and Waste Water underground or overhead pipelines.
The inner -layer tape shall be applied after the Liquid adhesive and before the outer-layer tape
by hand or with a wrapping machine
ⅡStructure：
The specification of the tape consists of two layers, adhesive layer and film backing
Adhesive: butyl rubber
Film backing: Special blend of stabilized polyethylene
Ⅲ Features:
Excellent adhesion to pipe and self
Can be applied over a wide temperature range
Good conformability and consistent uniform thickness
Easily applied with no special equipment
Compatible with common pipe coatings
Excellent resistance to cathodic disbonding
Meets ASTM D 1000 Standard
Cold applied
Ⅳ Physical Properties
XUNDA-T 138
|
Physical Properties
|
Test Method
|
Typical Value
|
|
English
|
Metric
|
|
Total thickness
|
ASTM D 1000
|
15.0 mil
|
0.38 mm
|
|
Backing thickness
|
ASTM D 1000
|
9.0 mil
|
0.23 mm
|
|
Adhesive thickness
|
ASTM D 1000
|
6.0 mil
|
0.15 mm
|
|
Width
|
-
|
2’’- 32 ‘’
|
50 -800 mm
|
|
Length
|
-
|
100’ -800 ‘
|
30 -240 m
|
|
Backing colour
|
-
|
Black,Yellow or others
|
|
Tensile strength
|
ASTM D 1000
|
22.5 lbs/in
|
40 N/ cm
|
|
Elongation
|
ASTM D 1000
|
300 %
|
|
Peel Adhesion to primed steel pipe
|
ASTM D 1000
|
183 oz/in
|
20 N/cm
|
|
Cathodic Disbandment
|
ASTM G8
|
0.25 in radius 6.4 mm
|
|
Dielectric Strength
|
ASTM D 149
|
30 Kv
|
|
Volume Resistivity
|
ASTM D 257
|
1.5x1012 ohm.cm
|
|
Water Absorptivity
|
ASTM D 570
|
0.07 %
|
|
Water Vapor Transmission Rate （24h）
|
ASTM F1249
|
0.01g/100sq in/24h
|
0.1g/100sq mm/24h
|
|
Application Temperature
|
|
14℉-140℉
|
-10 ℃ - 60 ℃
|
|
Max Service Temperature
|
|
-40℉-176℉
|
- 40 ℃ - 80℃
|
