Complaint
| Name | Pre-insulated Pipe |
| structure | work steel pipe/polyurethane insuation layer /HDPE outer protection pipe |
| the material of insuation layer | polyurethane foam |
| Installation Method | 1.cold installation 2.Prestress Installation 3.Preheat Installation Method 4.One-Time Compensator Installation Method |
| indexes | preference Standard | unit | standard requirement |
| Density | CJ/T114-4.3.2 | kg/m3 | ≥60 |
| Average | CJ/T114-4.3.1 | mm | ≤0.5 |
| Percentage of close area | CJ/T114-4.3.1 | % | ≥ 88 |
| Compressive strength | CJ/T114-4.3.3 | MPa | ≥ 0.3 |
| Water Absorption | CJ/T114-4.3.5 | % | Immersion in boiling water 90 minute,bubble water absorption should be not more than 10% |
| Cavity | CJ/T114-4.3.1 | ≤ 0.033 |
| Specifications (mm) | steel pipe OD×Thickness (mm) | Outer protection tube diameter ×Wall thickness (mm) | Insulation thickness (mm) | Unit weight Kg/m |
| 32/90 | 32×2.8 | 90×2.5 | 26.5 | 3 |
| 45/110 | 45×2.8 | 110×2.5 | 30.0 | 4 |
| 57/120 | 57×3.0 | 120×2.5 | 29.0 | 6 |
| 60/125 | 60×3.5 | 125×3.0 | 29.5 | 7 |
| 76/140 | 76×4.0 | 140×3.0 | 29.0 | 9 |
| 89/160 | 89×4.0 | 160×3.0 | 32.5 | 11 |
| 108/180 | 108×4.0 | 180×3.0 | 33.0 | 13 |
| 133/200 | 133×4.5 | 200×3.2 | 30.3 | 17 |
| 159/250 | 159×4.5 | 250×3.9 | 41.6 | 22 |
| 219/315 | 219×6.0 | 315×4.9 | 43.1 | 39 |
| 273/365 | 273×6.0 | 365×5.6 | 40.4 | 49 |
| 325/420 | 325×7.0 | 420×7.0 | 40.5 | 67 |
| 377/500 | 377×7.0 | 500×7.8 | 53.7 | 81 |
| 426/560 | 426×7.0 | 560×8.8 | 58.2 | 94 |
| 478/600 | 478×7.0 | 600×8.8 | 52.2 | 104 |
| 529/630 | 529×7.0 | 630×9.8 | 40.7 | 114 |
| 529/655 | 529×7.0 | 655×9.8 | 53.2 | 117 |
| 630/760 | 630×8.0 | 760×11.5 | 53.5 | 158 |
| 720/850 | 720×8.0 | 850×12.0 | 53.0 | 181 |
| 820/960 | 820×10.0 | 960×14.0 | 56.0 | 252 |
| 920/1055 | 920×10.0 | 1055×14.0 | 53.5 | 281 |
| 1020/1155 | 1020×10.0 | 1155×14.0 | 53.5 | 312 |
| 1220/1380 | 1220×12.0 | 1380×16.0 | 64.0 | 444 |
| 1420/1602 | 1420×14.0 | 1602×16.0 | 75.0 | 590 |
| 1. | good insulation properties |
| 2. | low heat loss |
| 3. | heat loss is 25% of the traditional pipe. |
| 4. | energy saving |
| 5. | about 30 yeas move the service life, low cost |
| 6. | has a strong waterproof and corrosive resistance and high mechanical strength |
| 7. | no attached trench ,can be directly buried in the ground or water. |
