in the manufacturing process of steel sleeve steel insulation pipe.
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Heat preservation pipe, high density polyethylene jacket pipe, high temperature resistant prefabricated insulation pipe, buried polyurethane directly buried insulation pipe, black jacket directly buried insulation pipe, steel sleeve steel sliding steam directly buried insulation pipe, external sliding steam directly buried insulation pipe, black jacket insulation pipe, yellow jacket insulation pipe and other specifications are complete. Polyurethane thermal insulation steel pipe is mainly composed of working steel pipe and insulation layer, but there is no working steel pipe, and the insulation layer is mainly composed of polyurethane. Polyurethane is the full name of polyurethane, which is the general name of macromolecular compounds with repeated carbamate groups on the main chain. It is made of organic or polyisocyanate plus dihydroxyl or polyhydroxyl compounds.
Slope. The joints of directly buried insulation pipes need to be removed for transportation before construction. During joint construction, if stagnant water is found in the pit, the stagnant water in the pit should be removed first. Sundries and sand in the pipe should be clean. The prefabricated insulation pipe can be installed by lifting a single pipe into the ditch, or it can be hoisted after 2 or more groups are welded. When the group welding pipe section is long, it is appropriate to use two or more cranes to lift the lower pipe, and the position of the lifting point is strictly forbidden to push the pipe directly into the ditch for working steel pipe welding. the steel sleeve steel thermal insulation steel pipe should be welded by chloride arc welding, and it can also be
The steel sleeve steel steam directly buried thermal insulation steel pipe 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 through the equipment. High temperature steam insulation steel pipe is suitable for conveying, steam or other media below 350 degrees Celsius. High temperature steam insulation steel pipe is used as external protective layer, which has the advantages of high strength, not easy to damage, simple construction and maintenance, and long service life. Steel jacket steel directly buried steel pipe is a new laying technology in underground directly buried pipe. Advanced high temperature centrifugal glass wool is adopted for thermal insulation and FRP winding technology is adopted for external protection pipe. A new generation of prefabricated directly buried steel sleeve steel steam insulation pipe series is produced, which is suitable for steam or other heat medium