Polyurethane insulation tube is made of high function polyether polyol composite and multiple methyl polyphenyl polyisocyanate as raw materials by chemical reaction foaming. Polyurethane insulation pipe is used for indoor and outdoor all kinds of pipes, central heating pipes, central air conditioning pipes, chemical, pharmaceutical and other industrial pipes of insulation and cooling engineering. Since the birth of polyurethane synthetic materials in the 1930s, polyurethane foam insulation pipe has been developed rapidly as an excellent thermal insulation material, and its application is more and more extensive. Because of its simple construction, energy saving and anti-corrosion effect, it is widely used in a variety of heating, cooling, oil, steam and other pipelines.

Polyurethane insulation pipe - Common problems and solutions in construction

The occurrence speed of polyurethane insulation pipe is slow. This phenomenon generally appears in autumn and winter season or morning construction, because the temperature is suddenly reduced or low. It can be solved by increasing the ambient temperature and black material temperature. Generally, the black material temperature rises to 30-60℃, and the ambient temperature rises to 20-30℃.

Polyurethane insulation pipe is fast. This phenomenon generally appears in spring and summer or noon construction, because the sudden rise in temperature is caused by the temperature. The black material can be cooled with cold water or placed outdoors at night to cool naturally and avoid direct sun exposure.

The phenomenon that the foam strength of polyurethane insulation pipe is small and foam is soft is caused by the imbalance of the ratio of black and white material. It is necessary to increase the ratio of black material appropriately (1:1-1.05). It should be noted that the ratio of black material should not be too large, otherwise, foam will become brittle and affect the performance of foam.

Polyurethane insulation pipe has become a mature advanced technology in some developed countries. In recent decades, Chinese heating engineering technicians have been promoting the development of domestic pipe network laying technology to a higher level through digesting and absorbing this advanced technology. The practical results of more than ten years fully prove that the polyurethane insulation pipeline laying has many advantages compared with the traditional trench and overhead laying. The directly buried insulation pipe is made of the steel pipe of the conveying medium, the high-density polyethylene outer casing, and the hard polyurethane foam insulation layer between the steel pipe and the outer casing. It is also the internal power of the rapid development of polyurethane thermal insulation buried pipe on heating engineering.

Cangzhou shenlong pipe manufacturing co., ltd. Is engaged in oil, gas, water, coal slurry mixing medium steel pipeline coating operations, anti-corrosion, insulation, piping is set in a body's specialized pipeline engineering precast construction enterprises, products used in an oil pipeline, chemical piping, electrical, pipe, gas pipe, heat pipes, sewage pipes, etc. Anti-corrosion processing of straight pipe and bend pipe DN40-3000 three-layer structure polyolefin (PE, PP, TPEP,3LPE) steel pipe coated with anti-corrosion, DN40-3800 steel hot stewed bend pipe and pipe fittings coated with FBE, epoxy resin coating anti-corrosion, DN40-3800 steel pipe inner wall resistance reduction, solvent-free epoxy steel pipe, epoxy paint anti-corrosion, Coated plastic steel pipe, dip plastic steel pipe. Lined with plastic steel pipe PE, PO, PP, PTFE, HDPE, polymer polyethylene corrosion. The company is in strict accordance with China Petroleum and Natural Gas SY/T0413-2002, national GB/T23257-2009, German DIN 30670, American AWWA C210, and other international and domestic anti-corrosion standards.