JINING XUNDA PIPE COATING MATERIALS CO.,LTD

Products > Pipe Outer Wrapping Tape > > Polyethylene outer tape
Product name : Polyethylene outer tape
Item : T 238
Film : Polyethylene
Adhesive : Butyl rubber
Release paper : No
Standard : ASTM D 1000
Storage life : 36 months
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Details:
This Polyethylene tape coating system is made up of Primer ( P 19 or P27) and polythylene inner tape (20 mils ,25 mils,30 mils ) and polyethylene outer tape ( 20 mils, 25 mils , 30 mils ). The polyethylene inner tape is Black, The polyethylene outer tape is White, overlap 50% .

Application:

Prepare surfaces by removing all loose scale, rust or other foreign matter by grit blasting or wire brush. Surface must be clean, dry and free of grease.Apply thin film of Butyl Primer to all surfaces to be wrapped and allow to dry. Peel back interleaving and apply adhesive side of the tape to the surface and press down. Apply the tape spirally with enough tension to make it conform. Remove interleaving as wrapping proceeds. Overlap each turn by at least 1" or 55% to achieve double thickness.
Irregular surfaces such as valves, flanges, etc.

Polyethylene outer tape T 238

 

Physical Properties

 

Test Method

Typical Value

English

Metric

Total thickness

ASTM D 1000

15.0 mil

0.38 mm

Backing thickness 

ASTM D 1000

8.7 mil

0.22 mm

Adhesive thickness 

ASTM D 1000

6.3 mil

0.16 mm

Width 

-

2’’- 32 ‘’

50 -800 mm

Length 

-

100’ -800 ‘

30 -240 m

Backing colour

-

White,Yellow or others

Tensile strength 

ASTM D 1000

26.5 lbs/in

45 N/ cm

Elongation

ASTM D 1000

300 %

Peel Adhesion to inner-layer tape

ASTM D 1000

45 oz/in

5 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

1.8x1012 ohm.cm

Water Absorptivity

ASTM D 570

0.1 %

Water Vapor Transmission Rate (24h)

ASTM F1249

0.01g/100sq in/24h

0.1g/100sq mm/24h

UV resistance

-

Excellent

Application Temperature                                                                        

-

14℉-140℉

-10 ℃ - 60 ℃

Max Service Temperature

-

-40℉-176℉

- 40 ℃ - 80℃



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