Inner Tape

Inner Layer Tape for Pipe Corrosion Protection

Backing: Polyethylene Basic Material
Adhesive: Butyl-Rubber Basic Adhesive

The T-100 series of cold applied inner tape consists of adhesive layer and film backing. The adhesive is mainly the butyl rubber. The backing film is the specially blended stabilized polyethylene. The product can be applied by hand or with a wrapping machine easily. It is often used before the outer tape and after the liquid adhesive. The product is widely employed for corrosion protection of underground or overhead pipeline used for transporting oil, gas, petrochemical and waste water.

Physical Properties Parameters

Physical PropertiesTest MethodTypical Value
English UnitMetric Unit
Total Thickness ASTM D 100020.0 mil0.50 mm
Backing Thickness ASTM D 100012.0 mil0.30 mm
Adhesive Layer Thickness ASTM D 10008.0 mil0.20 mm
Width -2- 32 inches50 -800 mm
Length -100 -800 feet30 -240 m
Backing Color -Black
Tensile Strength ASTM D 100027 lbs/inch45 N/ cm
Elongation ASTM D 1000400 %
Peel Adhesion to the Steel Pipe with PrimerASTM D 1000228 oz/inch25 N/cm
Cathodic Disbondment StrengthASTM G80.25 in radius 6.4 mm
Dielectric Strength ASTM D 14940 kV
Volume Resistivity ASTM D 2572.2×10¹² ohm·cm
Water AbsorptionASTM D 5700.1 %
Water Vapor Transmission Rate (24h)ASTM F12490.01g/100sq inch/24h0.1g/100sq mm/24h
Application Temperature 14℉-140℉-10℃-60℃
Max. Service Temperature-40℉-176℉- 40℃-80℃

This series of inner tape is produced with the thickness of 0.5mm. It has good conformability and consistent uniform thickness. We can also provide the product with the total thickness ranging from 0.38mm to 1.0mm. Meeting the standard of ASTM D 1000, the product is excellent in resistance to cathodic disbondment. With good self adhesion available, it performs excellently in adhesion to pipe and can be applied easily with no need for special equipment. The product has a wide application temperature range. It is compatible with common pipe coatings.

Polyethylene Anticorrosion Adhesive Tape for Gas Pipeline

In the oil and gas production as well as in the city gas pipeline network, the electrochemical corrosion happens mostly. The soil corrosion belongs to the electrochemical corrosion. The main influencing factors of soil corrosion are comprised of soil resistivity, oxidation potential of soil, content of water, air and salt, soil temperature, acidity, microbe and stray current. Aiming to this type of anticorrosion needs, we develop the special anticorrosion tape for gas pipeline. The product has many features listed below.
1. The adhesive layer is uniform in thickness and has good adhesive sealing performance.
2. The bonding force between the film backing and adhesive layer is large. During the process of storage or construction, there is no degumming.
3. The product is resistant to heat, ageing and UV light.
4. It has high tensile strength and the elongation at break is appropriate, which facilitates wrapping by hand or equipment.

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