Introduction
Polyurethane insulation pipe is made from polyether polyol and polymethyl polyphenyl polyisocyanate as raw materials, which are chemically foamed. It has excellent characteristics such as light weight, high strength, heat insulation, sound insulation, flame retardancy, cold resistance, corrosion resistance, non water absorption, and simple structure. Polyurethane insulation pipe is suitable for insulation and refrigeration engineering of various indoor and outdoor pipelines, central heating pipelines, air conditioning pipelines, chemical, pharmaceutical and other industrial pipelines. Working steel pipes are usually made of seamless steel pipes and spiral steel pipes made of 20 #, 0235B, and 0345B steel. The performance meets the national standard GB/T8163-2018GB/T9711-2017. Working temperature: Continuous working temperature<120 ℃, occasional peak 140 ℃, working pressure: 2.5MPa
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Parameter
Main technical indicators of high-density polyethylene outer protective pipe
Technical indicator name | unit | | Execution standards and testing methods |
density | Kg/m³ | 940-960 | GB/T1033.1 |
tensile yield strength | MPa | ≥19 | GB/T18804 |
elongation at break | % | ≥450 | GB/T18804 |
Vertical shrinkage rate | % | ≤3 | GB/T6671 |
Carbon black content | % | 2.5±0.5 | GB/T13021 |
Long term mechanical performance | h | ≥2000 | GB/T29047 |
Main technical indexes of polyurethane foam insulation layer
Technical indicator name | unit | | Execution standards |
density | Kg/m | ≥69 | GB/T6343 |
compressive strength | MPa | >0 | GB/T8813 |
Water absorption rate | % | ≤10 | GB/T29047 |
close cell content | % | ≥90 | GB/T10799 |
thermal conductivity | W/(m ·k) | ≤0.033 | GB/T10294 |
Specification of polyurethane insulation pipe（Company:mm）
Steel pipe specifications | Specification of outer protective tube(national standard) | insulation thickness | Specification of outer protective tube(Economic type) | insulation thickness |
φ28*3 |
| 38 | φ100*2.5 | 28.5 |
φ45*3.5 | φ125*3 | 37 | φ110*2.5 | 30 |
φ57*3.5 | φ140*3 | 38.5 | φ125*2.5 | 31.5 |
φ76*4 | φ460*3 | 39 | φ140*2.5 | 29.5 |
φ89*4 | φ480*3 | 48.5 | φ160*2.5 | 33 |
φ108*4.5 | φ200*3.2 | 42.8 | φ180*2.5 | 33.5 |
φ133*4.5 | φ225*3.5 | 42.5 | φ200*3 | 30.5 |
φ159*5 | φ250*3.9 | 41.5 | φ240*3 | 37.5 |
φ219*6 | φ315*4.9 | 43.1 | φ300*3.5 | 37 |
φ273*6 | φ400*6.3 | 57.2 | φ365*4 | 42 |
φ325*7 | φ450*7 | 55.5 | φ420*5 | 42.5 |
φ377*7 | φ500*7.8 | 53.7 | φ475*5 | 44 |
φ426*7 | φ550*8.8 | 53.2 | φ530*6 | 46 |
φ478*7 | φ600*8.8 | 522 | φ580*6 | 45 |
Φ529*8 | Φ650*9.8 | 50.7 | Φ630*7 | 43.5 |
φ630*8 | φ760*11.1 | 53.9 | φ740*7 | 48 |
φ720*8 | φ850*12 | 58 | φ840*8 | 52 |
φ820*10 | φ960*13 | 57 | φ940*10 | 50 |
φ920*10 | φ1254*14 | 53 | φ1054*12 | 55 |
φ1020*12 | φ1155*14 | 525 | φ1155*12 | 54.5 |
φ1220*14 | φ1380*16 | 64 | φ1360*14 | 56 |
φ1420*16 | φ1650*18 | 97 | φ1600*14 | 76 |
Φ1620*18 | φ1860*20 | 100 | φ1800*16 | 74 |
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