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System Description
The polyken 942 black cold applied 3-ply pipe wrapping tape is a multilayer coating system designed for the corrosion protection of pipelines operating in highly corrosive environments and exposed to high mechanical stresses that may be present particularly on large diameter pipes.
The 3-ply adhesive system produces a strong cohesive bond to the primed steel surface, at the spiral overlap and to the mechanical outer layer.
Features
- Fully amalgamating overlapping areas Forming a sleeve-type coating - Impermeable to oxygen and moisture - Resistant to soil stress Superior in-ground performance -Long-term in-ground performance |
-Uniform coating thickness Plant coating quality with in-situ application -Low cathodic protection-current requirements Saving cost over the life of the pipeline -Compatible with all pipe diameters and generic plant coating systems |
Structure
Inner-3ply POLYKEN 942-32 |
Outer-2ply POLYKEN 955-20 |
|
Backing : |
12mil(0.30mm) |
15mil(0.381mm) |
Adhesive Inner Layer : |
12mil(0.30mm) |
5mil(0.127mm) |
Adhesive Outer Layer: |
8mil(0.20mm) |
|
Total Thick |
0.80mm |
0.508mm |
Product Selection Guide
Max operating temperature |
65°C (150°F) |
Recommended primer |
1027 |
Compatible line coatings |
PE,FBE,CTE, Tape and Coal Tar |
Performance |
DIN 30672 class C50, EN12068 class C50 |
Properties
UNIT |
TEST METHOD |
Inner layer-3ply tape |
|
POLYKEN 942-32 | |||
Total Thickness |
mil |
ASTM D 1000 |
32mil(0.8mm) |
Tensile strength |
N/cm |
ASTMD1000 |
112 |
Elongation at break |
% |
ASTMD1000 |
650 |
Peel strength to primed steel at 23 ℃ at 50℃ |
N/cm |
EN 12068 Annex C |
15 1.3 |
Peel strength tape to tape at 23 ℃ at 50℃ |
N/cm |
EN 12068 Annex B |
25 3.5 |
Peel strength layer to layer -Inner to Inner -Outer to Inner -Outer to Outer |
N/mm |
EN 12068 |
1.5 2.0 0.5 |
Dielectric strength |
Kv/mm |
ASTMD149 |
32 |
Insulation Resistance |
Ohm.m² |
EN 12068 |
1012 |
Water Vapor Transmission |
g/ m2 /24h |
ASTM E 96 |
0.1 |
Water Absorption |
% |
ASTM D 570 |
0.08 |
Impact resistance at 23° |
J |
EN 12068 |
18 |
Cathodic disbandment at 23°c at 50°c |
mm |
15 30 |
|
Lap shear strength at 50℃ |
N/mm2 |
EN 12068 |
0.05 |
Ordering Information
POLYKEN 942 955 tape coatings are in roll form.
Eg.: POLYKEN 942-32 4"×100'
Product Model No. |
Standard ordering options |
|
32 |
Total tape thickness in mils |
32mils(0.8mm) |
BLK |
Tape backing color |
Black (BLK) |
4 |
Tape width in inches |
2"(50mm),,4"(100mm),6"(150mm),9"(228mm),12"(305mm)18" (457mm) |
100 |
Tape roll length in feet |
50ft(15M)100ft(30M),200ft(61M) |