What are the advantages of the spiral tube?

    The spiral tube is divided into three layers from the inside to the outside. The working steel pipe layer is generally made of seamless pipe ( gb8163-87 ) spiral welded pipe ( gb9711-88 ) according to the design and customer requirements. SY / t5038-92 ) and straight seam welded pipe ( gb3092-93 ). After the surface of the steel pipe is treated by advanced shot blasting, the corrosion grade of the steel pipe can reach the level of gb8923-1988 SA2 , and the surface roughness can reach the standard of gb6060.5-88 R = 12.5 microns.


    The polyurethane insulation layer is formed by injection molding a rigid polyurethane foam into a cavity between the steel pipe and the outer jacket by a high pressure foaming machine. This is the so-called " tube foaming process ". Its function is waterproof, the second is insulation, and the third is to support the weight of the heating network. When the medium temperature is: 50 °C, 120 °C, use a rigid polyurethane foam insulation layer.


    High-density polyethylene protective layer Prefabricated black (yellow) plastic pipe with a certain wall thickness, its function is to protect the mechanical hard disk damage of the polyurethane insulation layer, and the second is anti-corrosion and waterproof.


    The spiral pipe is used for heating (refrigeration) project, and its heat sealing effect is remarkable. It is directly used for direct burial, which saves energy and reduces waste, and does not occupy the environment and beautify the environment. It is used for oil and gas transportation, can meet the requirements of long-distance transportation, avoid operation and maintenance, meet the requirements of heat preservation and antifreeze, reduce heating equipment, install special convenience and shorten construction period.


    When used for geothermal and hot spring transportation, it can meet the cooling requirements and achieve long losses. Applicable to water conservancy, mining and other fields to meet the requirements of cold, antifreeze and anti-corrosion. In addition, there is a broad application space for chemical raw material pipeline transportation. In short, the polyurethane direct insulation pipe has the advantages of energy saving, anti-corrosion, cold, economical and beautiful. In addition, it has been widely used throughout the country and is well received by users.


The polyurethane insulation pipe adopts the characteristics of polyurethane insulation: the thermal conductivity is small, and the thermal conductivity of the polyurethane foam is the lowest among the insulation materials, so that the heat loss of the material can be minimized. Waterproof, anti-corrosion, high old: Since the closed cell ratio of polyurethane foam is over 92% , the use of polyurethane foam as the insulation layer of buried pipeline can not only play the role of thermal insulation, but also effectively prevent water, moisture, etc. Penetration of various corrosive liquids and gases to prevent microbial growth and development.