Vertical retraction, GB / T6671.2 = 3% The thermal stability of GB / T7391 > 20min
Polyethylene outer protecting pipe
High density polyethylene as raw material, product diameter, length and other types of indexes can be based on user needs adjusting production;
In order to ensure the performance of jacket pipe, I choose the company of special polyethylene as raw material, the use of advanced equipment and production processes, product quality strict implementation of CJ / T114-2000 Buban standards. The pipe is generally black or yellow, can also be based on user needs to provide the futures color tube.
Product application:
Suitable for conveying at - 50 degrees C, 150 degrees C within the scope of a variety of medium thermal insulation engineering. It is widely used in city central heating, hot chamber, cold storage, coal mine, oil port, chemical industries such as thermal insulation engineering.
Advantages and characteristics:
1,To reduce project cost.
Calculate according to concerning a section, double control heating pipeline, under normal circumstances can reduce the project cost 25%
2, less heat loss, energy saving.
The thermal conductivity coefficient of: lambda = 0.013 - 0.03kcal / M H oC, than other commonly used pipe insulation material is much lower, insulation effect increased by 4 ~ 9 times. And the water absorption rate is very low, about 0.2kg / m2.
3, anti-corrosion, good insulation performance, long service life.
As the foaming insulation layer bonded to steel skin, cut off the air and water penetration, can play a good antiseptic effect. At the same time its foaming holes are closed, water absorption is very small. High density polyethylene shell has a good anti-corrosion, insulation and mechanical properties of. Therefore, the work steel pipe sheath is hard to outside air and water erosion. As long as the pipeline internal water treatment, according to foreign information, service life of up to 50 years, than the traditional trench laying, overhead laying high service life of 3 ~ 4 times.
4,In an area of small, fast construction, environment protection.
Directly buried heating pipeline without masonry large trench, only the insulation pipe buried underground, thus greatly reducing the project covers an area of, reduce the excavation volume above about 50%, reduce the construction of masonry and concrete volume 90%. At the same time, heat processing and the field ditches in parallel, just at joints, can shorten the construction period and about 50% more.
PE outer protection tube
