the service life of high temperature steel sleeve steel steam insulation

the service life of high temperature steel sleeve steel steam insulation

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The quotation of Nanyang sliding steel sleeve steel insulating steel pipe ensures the temperature of the working pipe interface between the organic insulating layer and the organic insulating layer, so that the foam is not carbonized. Two branch tubes are listed in the upper return to the drainage operation well, one for start-up drainage and the other for regular drainage. Advantages of polyurethane thermal insulation steel pipe: reduce the project cost according to the estimates of relevant departments, under general circumstances, polyurethane thermal insulation steel pipe can reduce the project cost by 25% (using fiberglass as protective layer) and 10% (using high density polyethylene as protective layer). Because the insulation layer of polyurethane rigid foam is closely bonded to the outer skin of the steel pipe, the polyurethane directly buried insulation pipe can prevent the infiltration of air and water and play a good role in anticorrosion. In the 1960s, due to the improvement of continuous pipe rolling mill and the emergence of three-roll piercing mill, especially the successful application of tension reducing mill and continuous casting billet, the production efficiency was improved and the ability of competition between seamless pipe and welded pipe was enhanced.

the service life of high temperature steel sleeve steel steam insulation

High-density polyethylene shell, FRP shell have good anti-corrosion, insulation and mechanical properties. In this regard, the outer skin of the working steel pipe is not easy to be eroded by external air and water. As long as the water quality in the pipeline is well treated, according to foreign data, the service life of high temperature steel sleeve steel steam insulation pipe can reach more than 50 years, which is 3 or 4 times longer than that of traditional trench laying and overhead laying. Steel sleeve steel insulated steel pipe 1. On the basis of laying and marking, the welded pipe construction shall be carried out according to the procedures of rectifier pipe material, cutting material, groove, grouping, welding and removal of welding slag. Pipe welding method:

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Steel sleeve steel directly buried thermal insulation pipe elbow with steel casing outside protection, internal heat preservation treatment. According to the compensation amount of the elbow in the pipeline design, the diameter of the outer casing should be increased accordingly, so that there is still enough thermal insulation thickness at the elbow after expansion and deformation. The thermal insulation material should also be changed accordingly, and the high resilience soft thermal insulation material should be selected. Thermal insulation elbows are also made into thermal insulation preforms in the prefabrication plant. ? Structural mechanism of directly buried steel sleeve steel insulation pipe? 2. External sliding type: the thermal insulation structure is composed of working steel pipe, glass wool thermal insulation layer, aluminum foil reflective layer, stainless steel fastening belt, sliding guide bracket, air insulation layer, external steel pipe and external anti-corrosion layer.

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