are needed for the production of steel sleeve steel steam insulated
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It can be directly buried in the underground permafrost, and the directly buried thermal insulation pipe makes up for many defects of trench laying, and is widely used in engineering, and has been continuously improved and perfected in practice. The working steel pipe is sandblasted with two layers of antirust paint. Steel sleeve steel insulation pipe, also known as prefabricated thermal insulation pipe, is a kind of directly buried prefabricated thermal insulation pipe with good thermal insulation performance, reliable and low engineering cost.
(3) it also has good corrosion resistance and impact resistance at low temperature, and can be directly buried in underground permafrost. (2) Insulation layer: rigid polyurethane foam is used. 5. An alarm system can be set up to automatically detect the leakage fault of the pipe network, accurately indicate the fault location and alarm automatically. The outer protective layer structure of steel sleeve and its anticorrosion measures will increase the project cost. (3) it also has good corrosion resistance and impact resistance at low temperature, and can be directly buried in underground permafrost. Responsibilities: the person in charge is responsible for the arrangement of sanitary and cleaning items in the workshop and environmental maintenance, and the human resources department is responsible for the supervision and inspection of environmental hygiene. Inorganic hard insulation layer: high temperature resistance, ensure the interface temperature between the organic insulation layer, ensure that the foam is not carbonized.
Laigang Yongfeng quasi-one fell to the factory, when the use of compensation directly buried laying method, welcome to inquire about the classification of directly buried insulation pipe: plastic sleeve steel insulation pipe: plastic sleeve steel insulation pipe is made of high density polyethylene outer casing polyurethane foam insulation layer and internal working steel pipe. Pipe owners are not determined to spend a lot of investment to continue the construction of the second phase of the pumping station, electric fusion connection, the current lack of confidence. The second extruder extruded polyethylene film and wound it around the adhesive to form a coating. 3pe anticorrosive steel pipe used in hydropower station, with the rise of pipeline engineering, the risk also accumulated.
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The directly buried polyurethane insulation pipe is mainly composed of four parts. 1 working steel pipe: slotted steel pipe, seamless steel pipe and double-sided submerged arc spiral welded steel pipe are adopted respectively according to the technical requirements of conveying medium. 2Insulation layer: rigid polyurethane foam is used. 3Protective shell: high density polyethylene or fiberglass fiber reinforced plastic. 4 leakage line: when manufacturing prefabricated polyurethane directly buried insulation pipe. In the insulation layer near the steel pipe, bury the cable, once the pipe. Q: what qualifications are needed for the production of steel sleeve steel steam insulated steel pipe?
Collision and throwing are prohibited. Direct contact with flame should be avoided in the insulation layer and anti-corrosion coating. Please follow the following procedure for pipe trench excavation-base treatment (drainage, sand cushion)-lower pipe-steel pipe welding-inspection (water pressure)-installation (pressure test)-foaming-sealing foam hole, joint installation. The company may send personnel to the project site to carry out the heat preservation work of the joint, including the installation of the outer casing of the joint, the connection and sealing of the outer casing of the joint with the supervisor and the foaming work of the on-site joint, but does not include the welding of the steel pipe of the joint. (1) sleeve joint, in this way. The joint casing adopts polyethylene casing with the same material and density as the prefabricated thermal insulation pipe casing, and the heat shrinkable belt is used to connect and seal between the polyethylene joint casing and the main pipe. The watertightness of the joint. Then the joint foams are carried out in the foam holes on the joint bushings.
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