Guanfang tape mechanism
Description
Qiangke-955 Cold applied tape coating system for corrosion protection of Oil, Gas, Petrochemical, and Waste Water underground or overhead pipelines. The outer-layer tape backing shall be compounded so that it will be resistance to outdoor weathering.
The outer-layer tape shall be applied after the inner-layer tape by hand or with a wrapping machine.
Structure
The specification of the tape consists of two layers, adhesive layer and film backing
Adhesive: butyl rubber
Outer layer: Special blend of stabilized polyethylene
Features
Excellent adhesion to inner-layer tape and self
Resistant to UV
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
Technical datas
OUTER WRAP TAPE: Qiangke-955 Series
Type | 955-15 | 955-20 | 955-25 | 955-30 |
Total thickness | 15mil(0.381mm) | 20mil(0.508mm) | 25mil(0.635mm) | 30mil(0.762mm) |
Backing | 10mil(0.254mm) | 15mil(0.381mm) | 20mil(0.508mm) | 25mil(0.635mm) |
Adhesive | 5mil(0.127mm) | 5mil(0.127mm) | 5mil(0.127mm) | 5mil(0.127mm) |
Elongation at Break | ³ 400% | |||
Tensile Strength |
| 45.3 N/cm | 50.8 N/cm | 60.1 N/cm |
Dielectric Breakdown |
| 32.9 KV/mm | 43.5 KV/mm | 45.2 KV/mm |
Cathodic Disbandment | 0.24 in radius 6.4 mm | |||
Volume Resistivity | 2.5 x 1012 ohm.m | |||
Water Vapor Transmission Rate | £ 0.08 gm/M2/24h | |||
Water Absorption Rate | < 0.07% | |||
Recommended Application Temperature | -50 to +600 C | |||
Available Roll Size (width x length) | 2" to 9" X 100 to 800 feet | |||
Color | White | |||
Recommended primer | 1019 or 1027 | |||
Performance | AWWA C-214,ASTM D 1000,EN 12068 | |||
