 |
| 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 |
