Advantages of Polyurethane Insulation Pipe: Insulation pipe site joint insulation must be conducted after pressure test is qualified. There are two methods for insulation layer: on-site foam construction and insulation tile construction. No matter which method is adopted, no annular space can occur, cracking, and detachment. Layers and other defects, there are a variety of protective layer practices (such as high-density polyethylene and fiberglass protective layer), but all must ensure the joint integrity, tightness, waterproof. Insulation pipe Pan Huailiang As polyurethane rigid foam prefabricated directly buried insulation pipe foam insulation layer tightly bonded to the outer skin of the pipe, cut off the infiltration of air and water, can play a good anti-corrosion effect.
The prefabricated pipe is buried directly underground and its foaming holes are closed, and the water absorption is small. The high-density polyethylene shell and glass fiber reinforced plastic shell have good anti-corrosion, insulation and mechanical properties. Therefore, the outer skin of the working steel pipe is hard to be eroded by the outside air and water. As long as the internal water quality of the pipeline is good, but compared with the straight seam pipe of the same length, the weld length is increased by 30. This product is widely used in flammable and non-combustible fluid transmission pipelines and boilers and steel structures. Seamless steel pipe is also called hot-rolled seamless steel pipe or hot-rolled steel pipe. The insulating layer consists of high-temperature fiber mats and spiral welded pipes. The strength of the spiral welded pipe is generally higher than that of the straight seam welded pipe. A narrower blank can be used to produce a larger diameter pipe, and a pipe of different diameter can also be produced using a blank of the same width. Seamless steel pipe production process Seamless steel pipe is an important process in which the tension reducing process is completed by the tension reducing process, which is the continuous rolling process of the hollow base metal without the mandrel. The ultra-steel steel pipe buried insulation pipe consists of the inner working steel pipe, the outer protection steel pipe and the middle insulating layer. Work steel pipe sandblasted two antirust paint. The prefabricated direct-buried thermal insulation pipe hot-rolled seamless steel pipe is resistant to high temperature and high pressure. It is suitable for medium temperature of 350°C. It has strong pressure corrosion resistance and high strength of the anti-corrosion layer. It is not easy to destroy. The seamless elbow elbow is a kind of pipe used in the turning of pipes. The largest proportion of all pipe fittings used in the piping system is approximately. Usually, different forming processes are chosen for different materials or wall thickness elbows. The common seamless elbow forming processes used in manufacturing plants include hot extrusion, stamping and extrusion.
Prefabricated construction buried underground pipe buried insulating tube with different properties and functions according to its use, it can be divided into civil building construction and use of non-buried insulating pipe buried insulating pipe residential use of two categories. Non-civilian buildings that use direct-buried heat preservation pipes can also be called buildings that use heat insulation pipes that are buried directly in production. They refer to buildings that use production and use of direct-buried heat preservation pipes for industrial and agricultural production. Civilian buildings that use directly buried heat insulation pipes can be divided into buildings that use residential direct-buried heat preservation pipes and buildings that use publicly-buried heat preservation pipes according to their functions. Residential buildings that use direct-buried thermal insulation pipes are used in residential buildings that use daily-buried thermal insulation pipes for people's daily lives, and those that use publicly-buried thermal insulation pipes are those that use people to carry out various social activities and use buried thermal insulation pipes. building.
Polyurethane foam uses high-functionality polyether polyols and multiple methyl polyphenyl polyisocyanates as the main raw materials. It is formed by chemical reaction foaming under the action of catalysts, foaming agents, and surfactants. Polyurethane products have the advantages of light weight, high strength, heat insulation, sound insulation, flame retardant, cold resistance, antiseptic, non-absorbent, simple and quick construction, etc. It has become a thermal insulation and waterproofing for construction, transportation, petroleum, chemical, power, refrigeration and other industrial sectors. Plugging, sealing and other indispensable materials. Polyurethane rigid foam tiles (tubes): used for indoor and outdoor pipes, central air-conditioning pipes, chemical, pharmaceutical and other industrial pipe insulation, cold insulation.