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The PP bitumen tape shall be applied after the Liquid adhesive by hand or with a wrapping machine.
Structures
The specification of the tape consists of three layers,
Adhesive layer: Butyl rubber Bituminous Compound
Backing : PP woven fabric cloth
Interleaf: Antiadhesive Film Treated with Silicone
Features
_ Cold applied
_ Excellent self adhesion to pipe
_ Flexibility provides extra protection at vulnerable areas
_ Excellent conformability and consistent uniform thickness
_ Easily applied with no special equipment
_ Compatible with common pipe coatings
_ Excellent resistance to cathodic disbanding
| Quantity: | |
|---|---|
| Item | Parameter | Standards to follow |
| Base membrane material | PP mesh reinforced woven fiber | PRC Petroleum/Natural gas industrial standard SY/T0414-2007 Steel piping PP adhesive tape Standard for corrosion layer technology PRC Construction industrial standard Urban Gas Piping Corrosion Prevention Control Specification American National Standard Association American Hydraulic Society Standard ANSI/AWWA C209-00 National Association of Corrosion Engineers standard NACE MR0274-95 |
| Base membrane color | Black | |
| Base membrane thickness | 0.30±0.05mm | |
| Composition of corrosion layer | butyl rubber improved asphalt | |
| Tape integral thickness spec | 1.1-1.8mm | |
| Base membrane extension strength | ≥25Mpa | |
| Peeling strength to painted steel | ≥45N/cm | |
| Peeling strength to back strap | ≥25N/cm | |
| Insulation voltage | ≥15KV | |
| Bulk resistance rate (Ω · m) | ≥1×10¹² | |
| Water absorption rate (%) | ≤0.2 | |
| Vapor infiltration rate (mg/24/h.cm2) | ≤0.45 | |
| Fungus resistance | Good | |
| Bacterial resistance | Good | |
| Each tape length | 20 or 25m | |
| Tape width | 50,75,100,150,200,300 and 350mm | |
| Storage temp. | -20°C-+35°C | |
| Operation temp. | -5°C-+50°C | |
| Use temp. | -34°C-+75°C |
