Polyurethane buried steam pipe insulation

Prefabricated buried pipe insulation, buried steam pipe insulation anticorrosion price of the polyurethane insulation market prospects despite prospects, but the current cast products buried pipe insulation level of per capita consumption in the world is not high, just $ 22 per capita, at an initial stage. Buried insulating pipe casting industry is a sunrise industry, has now become the basic materials industry and steel, cement, timber and other industries to keep pace, the domestic visionary entrepreneurs, investors, investment casting buried pipe insulation industry, I believe the time will Sunchon, in the location. In recent years, buried pipe insulation casting industry has entered a rapid development period, has become buried insulating pipe casting processing center, and one of Asia's largest world's largest casting buried pipe insulation market, especially in the power plant buried pipe insulation, chemical After the buried insulating pipe, buried pipe insulation and building materials, the rise of food buried pipe insulation, etc., because of its development prospects, market profits attractive, now strive to become the meat and potatoes when many companies to invest. Prefabricated buried pipe insulation Description: prefabricated buried pipe insulation, also known as pre-heat pipe, is a good insulation properties, plus safe, reliable, low construction cost of prefabricated buried pipe insulation. Effective solution to the urban central heating in 130 ℃ -600 ℃ high temperature heat transport prefabricated insulating pipe insulation, sliding lubrication and waterproofing exposed pipe ends. Prefabricated buried pipe insulation / prefabricated pipe insulation not only has the traditional trench and overhead laying pipeline incomparable advanced technology, practical performance, but also has significant social and economic benefits, but also a powerful heating energy-saving measures. Prefabricated insulation parts are buried heating pipe technology, marking China heating pipes technological development has entered a new starting point. Prefabricated buried pipe insulation / prefabricated pipe insulation purposes: prefabricated insulating pipe fittings are widely used in liquid, gas pipeline network, chemical pipe insulation works in petroleum, chemical, central heating network, central air conditioning and ventilation pipes, municipal engineering. Prefabricated buried pipe insulation characteristics: heat pipe is made of prefabricated steel, glass steel jacket, fiberglass shell structure, characterized by: further comprising a heat insulation layer, a lubricating layer, elastomeric seals. The utility model prefabricated pipe insulation effectively solve urban central heating in 130 ℃ -600 ℃ high temperature heat transport with prefabricated buried pipe insulation / prefabricated insulating pipe insulation, sliding lubrication and waterproofing exposed pipe ends. Detailed prefabricated buried pipe insulation, corrosion buried steam pipe insulation three-tier price structure from the inside out - Langfang Xin Grand Insulation Materials Co. First layer: Working pipe layer according to the design and requirements of customers generally use seamless (GB8163 -87) spiral welded pipe (GB9711-88; SY / T5038-92) and Longitudinal (GB3092-93). Advanced steel surface after shot blasting process, steel rust rating up to GB8923-1988 standard Sa2 grade, surface roughness up GB6060.5-88 standard R = 12.5 m. Second layer: polyurethane foam insulation with high-pressure steel pipe machine in the cavity between the outer protective layer is formed of a one-time injection of rigid polyurethane foam liquid from. Commonly known as "pipe-in-pipe foaming process." First, its role waterproof, and second, the insulation, the third is to support the weight of the heat network. When the transmission medium temperature: -50 ℃ -120 ℃, the selection of rigid foam made polyaminocarboxylic isocyanurate insulation. The third layer: high-density polyethylene protective layer of a certain thickness prefabricated black (yellow) plastic pipe, its effect one protection against mechanical hard polyurethane insulation material damage, and second, anticorrosion and waterproof insulation Buried pipes have effective thermal insulation , waterproof, corrosion, insulation, noise, fire, cold, corrosion, light capacity, high strength, simple construction fast, afraid plant thorn and other outstanding features, has become the construction, transport, petroleum, chemical, electric power, refrigeration and other industrial sectors insulation, water sealing, seals and other essential materials. Buried insulating pipe insulation for indoor and outdoor pipes, central heating pipes, central air conditioning ducts, chemical, pharmaceutical and other industrial pipes, cold engineering, pipeline engineering, transport gas and other pipeline projects. Life buried pipe insulation can in the 0.6-1.2 m permafrost buried heat loss than ordinary pipe can be reduced by 40%, working life than other insulation corrosion materials increased by 3-5 times, life can reach 30- 50 years. Buried pipe insulation polyurethane synthetic materials born in 1930s, has been used as an excellent insulation material and rapid development, its application has become increasingly widespread, but also because of its construction prefabricated buried pipe insulation specifications, polyurethane insulation pipe, polyurethane foam pipe insulation in a piping system, the elbow is to change the direction of the pipe fittings. Angularly points, and the three most commonly used, according to project needs in addition also includes other non-normal angle elbow. Elbow materials are cast iron, stainless steel, alloy steel, malleable iron, steel, nonferrous metals and plastics. And the pipe coupling methods are: direct welding most common way flanged, hot melt connection, fused connection, thread coupling and socket type coupling and the like. According to the production process can be divided into: welding elbow, pressing elbow, casting elbow. Other names: degree elbow, right angle bend, bend and so love. Polyurethane insulation with a small heat loss, compression performance, good corrosion waterproof performance characteristics. Especially for high water table areas. Compared with the traditional trench laying pipe, with good insulation properties, good corrosion, insulation performance, long life, easy construction and installation, small footprint, low construction cost series of advantages. It has been widely used in central heating, oil, chemicals, refrigeration and cold areas of water supply and other projects. Polyurethane insulation foam strength is small and soft bubble this phenomenon is caused by the imbalance of black and white material, and increase the proportion of black material can be (1: 1-1.05) Note is not so black material ratio is too large, otherwise, would bubble droplets brittle bubble also affect performance. Polyurethane insulation insulation effect: Polyurethane insulation effect compare with other materials. 2, the construction cost low buried pipe insulation compared to traditional pipeline trench, saving the cost of the entire trench and its subsidiaries support means. Direct buried laying lower cost than traditional perlite insulation trench laying works. Useful life of 60 years, information on domestic life of 16-year wet aging, thermal aging life of 60 years, some general information on heat pipes as the cause of the common pipeline, taking into account the role of internal corrosion, which also happened in the age 15 year or more, some of the information, the role of buried life of 50 years, laying empty frame of 20 years. Although statistics vary, but the buried pipeline corrosion insulation than traditional pipeline trench, life is much higher. Its minimum service life of 15 years. Detailed prefabricated buried pipe insulation, corrosion insulation buried steam pipe prices buried pipe trench dimensions shall comply with the requirements shown below: 1, local ditch at the bottom of the upper bearing capacity ≤ 60KPa, the bottom of the trench should be padded plain concrete layer. 2, C15 plain concrete should be compacted soil layer at the bottom, and then pouring concrete, concrete floor surface should be smooth. When the soil is wet bottom collapsible soil, should be replaced (about depth 1.0m) and compaction. 3, trench width and depth of a trench joints should increase over non-joint 250 ~ 300mm. 4, with the bellows location, soil bellows bottom elevation should be determined according to the size of the actual arrival of the compensator. 5, the ditch along the upper slope of the line should be consistent with the slope of the pipeline. 6, around the buried pipe 100mm solid throughout with fine sand. Sand diameter should be less than 8mm, can not fit in the sand clay, brick, stone, iron and other debris. 7, when the tube is located in the truth slag, debris and other corrosive soil area, backfill should be replaced with less corrosive soils and layered foundation. 8, the trench must be good drainage work, it can be drains, sump pumps excluded. Pipeline installation pipeline excavation and ditch soil treatment must be qualified in a tubular ditch. NOTE When installing the following requirements; 1, before the pipeline trench at the need for a serious review of its surface coating, the coating was found damaged and should be treated promptly. 2, pipe butt, pipeline design should ensure that the axis and slope. 3, prefabricated pipe insulation can install a single crane into the trench, may be two or more organizations after welding lifting. When the group long pipe section, to use two or more cranes lift tube down tube, the position of lifting point selected by the equilibrium conditions. It is forbidden to directly push the pipe into the trench. 4, pipe welding work is completed and passed the test, they can deal with insulation joints, work jacket pipe connections, can be carried out formwork polyurethane foam, and then shrink with the joint part of the overall seal both ends Straight each overlap 100mm; also the first outer tube welded process, and after passing through the opening foam seal checks. 5, the date of completion of the project should be the end of the tube with a blind plate sealed to prevent mud and water into the tube. 6, prefabricated cold insulation installation, installation and one-time compensation of warm prestressing installed in three ways. 7, cold-install is the direct connection of each pipe section, and after inspection standard backfill can be; 8, hot prestressed pipeline installation is first preheated to 60% of the working temperature of the solder, and then backfill compaction. 9, the one-time compensation must be raised to 60% in the pipeline operating temperature soldering, and then backfill and compaction. Detailed prefabricated buried pipe insulation, corrosion insulation buried steam pipe prices related products: polyurethane insulation polyurethane buried pipe insulation prefabricated buried pipe insulation Other: Buried anti-corrosion pipe insulation buried pipe insulation, steel pipe outer wall refers to the anti-corrosion coating layer, insulating layer and compression layer composite pipe. It has a small heat loss, compression performance, good corrosion waterproof performance characteristics. Especially for high water table areas. Compared with the traditional trench laying pipe, with good insulation properties, good corrosion, insulation performance, long life, easy construction and installation, small footprint, low construction cost series of advantages. It has been widely used in central heating, oil, chemicals, refrigeration and cold areas of water supply and other projects. Product structure and main technical indicators First, the product structure: anti-corrosion pipe insulation Buried include pipe wall corrosion layer, insulating layer and compression protection layer. Coating: The GII type cyclooxygenase asphalt coating, has good acid and alkali, corrosion resistance. Insulation: Polyurethane foam. Compression protection layer: fiberglass protective layer.