Steel pipe knowledge: Directly buried thermal insulation pipe definition and performance Directly buried thermal insulation pipe structure is divided into three layers from the inside to the outside. The first layer is the working core pipe for conveying medium. The core pipe is generally made of seamless pipe (GB8163-87) spiral welded pipe. (GB9711-88; SY/T5038-92) and straight seam welded pipe (GB3092-93), and galvanized steel pipe and PPR, etc. are selected according to different requirements of users. The diameter of the core pipe is [φ22, 25, 32, 38, 45, 57,76,89,108,133,159,219,273,325,377,426,478,529,630,720,820,920,1220]; insulation material is polyurethane foam or composite insulation material, [ The thickness of the insulation layer is 30-150mm]; the outer sheath is high-density polyethylene jacket tube, glass fiber reinforced plastic pipe and anti-corrosion steel pipe.
Buried thermal insulation tube performance:
Buried thermal insulation pipe has good mechanical properties and thermal insulation properties. Usually it can withstand high temperature 120°C. It can withstand high temperature 180°C through modification or combination with other insulation materials. It is suitable for insulation of various cold and hot water high and low temperature pipes. engineering.
Buried insulation pipe, also known as "tube in pipe", has a "two-step method" and consists of a high-density polyethylene outer protective layer, polyurethane rigid foam insulation material and steel pipe. The insulation material is a rigid polyurethane foam with a density of 60kg/m3 to 80kg/m3, which fully fills the gap between the steel pipe and the casing, and has a certain adhesive strength, so that the steel pipe, the outer casing and the heat insulation layer are among the three Form a solid whole.
Buried thermal insulation tube performance:
Buried thermal insulation pipe has good mechanical properties and thermal insulation properties. Usually it can withstand high temperature 120°C. It can withstand high temperature 180°C through modification or combination with other insulation materials. It is suitable for insulation of various cold and hot water high and low temperature pipes. engineering.
Buried insulation pipe, also known as "tube in pipe", has a "two-step method" and consists of a high-density polyethylene outer protective layer, polyurethane rigid foam insulation material and steel pipe. The insulation material is a rigid polyurethane foam with a density of 60kg/m3 to 80kg/m3, which fully fills the gap between the steel pipe and the casing, and has a certain adhesive strength, so that the steel pipe, the outer casing and the heat insulation layer are among the three Form a solid whole.
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