Characteristics of Polyurethane Thermal Insulation Pipe
The full name of polyurethane foamed insulating pipe is polyurethane foam plastic prefabricated direct-buried insulating pipe with high density polyethylene outer protective pipe. It is composed of delivery medium, obligatory steel pipe, polyurethane insulating layer and polyethylene plastic outer protective pipe, which are combined outward in turn through equipment. The structure of the outer maintenance layer is composed of three parts: the outer maintenance layer, the thermal insulation layer and the anti-leakage layer. The outer maintenance layer is made of polyethylene jacket pipe or FRP or other materials. There are three laying methods: direct burial, overhead and trench.
Characteristics of polyurethane foamed insulating steel pipe:
1. Polyurethane foamed insulating steel pipe reduces project cost.
2. Low heat loss, waste power.
3. Polyurethane foamed insulating steel pipe is anticorrosive, has good insulating function and long service life.
4. Polyurethane foamed insulating steel pipes occupy less land, construct quickly, and are beneficial to environmental maintenance.
5. Safety of polyurethane foamed insulating steel pipe.
Polyurethane foamed insulating steel pipe has three layers from inside to outside.
First layer: Compulsory steel pipe layer: Seamless steel pipe, spiral steel pipe and straight seam steel pipe are generally selected according to design and customer requirements. The surface of steel pipe has been treated by advanced shot peening and rust removal technology.
The second layer is polyurethane insulation layer, which is made by injecting rigid polyurethane foam plastics into the cavity formed between the steel pipe and the outer cover with a high-pressure foaming machine, commonly known as "tube-in-tube foaming".
The third layer: high density polyethylene maintenance layer: Prefabricated a certain thickness of black or yellow polyethylene plastic pipe. Polyethylene is odorless, non-toxic, waxy-like and has excellent low-temperature resistance. The lowest operating temperature can reach - 70 ~100 C. It has good chemical shaking property and can resist corrosion of most acids and bases (not resistant to oxidizing acids). It is insoluble in ordinary solvents at room temperature and has little water absorption. However, because it is a linear molecule, it can slowly dissolve in some inorganic solvents, and does not swell, and has electrical insulation power. Excellent use, its role is to maintain polyurethane insulation layer from machine hardware damage, the second is anti-corrosion, waterproof.
In summary, all the above-mentioned Shandong Hipper Pipe Technology Development Co., Ltd. provides, want to know more about polyurethane insulation pipe manufacturers, welcome to pay attention to our website: https://www.sdhpgy.com Thank you for your support!
