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Help CenterUnderground Pipeline Corrosion Protection Tape / Butyl Rubber Sealing Tape Rust Prevention
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Certification:ISO 9001,ISO 14001,OHSAS 18001
0.635mm black color 100width high strength polyethylene butyl rubber tape for corrosion protection of gas pipeline
ⅠSystem 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 butyl rubber 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
Polythene Butyl tape (inner layer)
Item T-150 |
Typical Value |
Test Method |
Total thickness |
0.635mm |
ASTMD 1000 |
Polyethylene Film |
0.33mm |
ASTMD 1000 |
Synthetic Adhesive |
0.305mm |
ASTMD 1000 |
Elongation at Break³ |
400% |
ASTMD 1000 |
Tensile Strength |
60 N/cm |
ASTMD 1000 |
Yield Strength |
42.3 N/cm |
ASTMD 1000 |
Peel Adhesion to Primed Pipe |
30 N/cm |
ASTMD 1000 |
Dielectric Strength |
45.8 KV/mm |
ASTMD 149 |
Cathodic Disbandment |
0.24 in radius 6.4 mm |
ASTMD G8 |
Volume Resistivity |
2.5 x 1012 ohm.m |
ASTMD 257 |
Water Vapor Transmission Rate £ |
0.1gm/M2/24h |
ASTM F 1249 |
Water Absorption Rate |
< 0.10% |
ASTMD 570 |
Recommended Application Temperature |
-10℃to 60℃ |
---------- |
Max Serve Temperature |
-40 to 80℃ |
---------- |
Color |
Black |
----------- |
Available Roll Size (width x length) |
2\" to 32\" X 50’ to 800’ |
------------ |
Cold applied coating tape Application Instruction
1.Steel pipe pretreatment
1.1 Keeping the pipe external surface clean and dry. Remove the dust,
oil, welding slag, burrs, grease and dirt on pipe surface.
1.2 Pipe surface prepared up-to a level of Sa 2 or 2 ½ or St 2/st by sand blasting.
1.3 After the pre-cleaning operations, the pipe surface not smooth
which may sharp the pipe coating should be burnished , the abrasive
dust attached on the pipe surface should also be cleaned clearly.
1.4 If flash rusting occurs, the surfaces must be re-cleaned by blasting as above.
2.Coating &Wrapping application
2.1 Coating &wrapping application consist of primer application, inner
tape coating ,outer tape coating .
2.2 weather condition
2.2.1 When the wind&sand was strongly, when the sand and dust covered
on the surface of pipe, primer ,tape etc., should not be brushing primer
and wrapping the tape if there is no reliable preventive measures.
2.2.2 When air humidity is greater than 80%,or when the pipe surface is wet from any precipitation, should not be brushing primer and wrapping tape.
3.Brushing primer
3.1 The brushing time should be control within 6 hours between the pipe surface treatment and brush primer. During brush primer, pipe surface should be free from damp and pollution. If the pipe surface rust return, should be re-pre-cleaned.
3.2 The primer should be mixed evenly in the container before brushing.
3.3 The primer should be applied uniformly, without any sags, floods, runs, drips, bare spot and over spray, such as leakage brush, clot, streaming. The primer coat DFT shall not be less than 25-50micron (1-2mils)
3.4 After the primer dried, then wrapping the tape(It usually takes 3to 5 minutes.).
3.5 Consumption:
machine application approx. 0,1 litre/m²
hand application approx. 0,2 litre/m²
4.Wrap tape application
4.1 Wrap tape application cons
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