直埋预制保温管由输送介质的钢管,聚氨酯硬质泡沫保温层和高密度聚乙烯外套管紧密结合而成,该产品主要用于城
镇集中供热管网,石油输送管线,高寒地区输水管线及厂区工业管道工程,它具有高效保温、防水防腐和施工简便,不怕
植物根刺的优点,施工不需地沟敷设,能在0.6-1.2米冻土层内直埋,热损失比传统工艺可降低40%,使用寿命比其他绝热
防腐材料提高3-5倍以上,使用寿命可达30-50年。
Direct-buried prefabricated thermal insulation pipe is made by closely attach- ing the transm-
ission medium of steel pipe ,polyurethane hard foamed thermal insulation layer and HDPE outer casing This project is mainly used on urban central heating networks, petroleum transmission pipelines ,
water supply pipe- lines in high and cold areas and industrial pipeline projects in factory areas .
It has the advantages of highly effective thermal insulation,water resistance and corrosion resis-
tance and resistance to puncture by plant roots. Trench laying is not required during construct-
ion and it can be directly buried in the frozen earth layer 0.6to 1.2m deep。The amount of thermal
loss can be reduced by 40%as compared with the traditional process. Its service life can reach 30
to 50 years, which is 3to 5 times longer than other thermal insulat-ion and corrosion resistant materials.
预制直埋热水保温管性能指标
项目 |
单位 |
技术指标 |
密度 |
kg/m3 |
≥60(任意位置) |
导热系数 |
kg/m3 |
≤0.033 |
径向压缩强度 |
Mpa |
≥0.3 |
吸水率 |
% |
≤10 |
闭孔率 |
% |
≥88 |
使用温度 |
℃ |
140℃ |
预制直埋热水保温管规格型号
钢管规格 |
外套管规格 |
保温层厚度(mm) |
长度(m) |
Ф60×3.0 |
Ф125×2.5 |
30 |
6 |
Ф76×3.0 |
Ф140×3.0 |
29.5 |
6 |
Ф89×4.0 |
Ф160×3.0 |
32.5 |
6 |
Ф114×4.0 |
Ф200×3.2 |
39.8 |
6 |
Ф140×4.5 |
Ф225×3.5 |
39 |
6 |
Ф165×4.5 |
Ф250×3.9 |
38.6 |
6 |
Ф219×6.0 |
Ф315×4.9 |
43.1 |
12 |
Ф273×6.0 |
Ф365×5.6 |
40.4 |
12 |
Ф325×7.0 |
Ф420×7.0 |
40.5 |
12 |
Ф377×7.0 |
Ф500×7.8 |
53.7 |
12 |
Ф426×7.0 |
Ф550×8.8 |
53.2 |
12 |
Ф478×7.0 |
Ф600×8.8 |
52.2 |
12 |
Ф529×8.0 |
Ф655×9.8 |
53.2 |
12 |
Ф630×8.0 |
Ф760×11 |
53.9 |
12 |
Ф720×9.0 |
Ф850×12 |
53.0 |
12 |
Ф820×10.0 |
Ф960×13 |
57.0 |
12 |
Ф920×10.0 |
Ф1054×14 |
53.0 |
12 |
Ф1020×12 |
Ф1155×14 |
53.5 |
12 |
Ф1220×12 |
Ф1380×15 |
65.0 |
12 |