The insulation of steel sheathed steam buried pipelines consists of working steel pipes, glass wool insulation layers, aluminum foil reflective layers, fastening straps, sliding guide brackets, air insulation layers, external protective steel pipes, and external anti-corrosion layers. Steel sleeve steam direct buried pipeline insulation and its advantages and applications: Steel sleeve steam pipeline insulation consists of an outer steel pipe with a steel pipe anti-corrosion layer, an insulation layer, and an inner steel pipe. Steel sleeve steel steam composite pipeline insulation is suitable for the transportation of steam or other media below 2.5MPa and 350 degrees Celsius. This product uses steel pipes as the outer protective layer, which has the advantages of high strength, low damage, simple construction and maintenance, and long service life.

Internal sliding type: The insulation structure consists of a working steel pipe, aluminum silicate, drag reduction layer, microporous calcium silicate, insulation layer, stainless steel fastening tape, aluminum foil reflective layer, polyurethane insulation layer, coated steel pipe, and outer coating (foundation). Not used.

External sliding type: The insulation structure consists of a working steel pipe, a glass wool insulation layer, an aluminum foil reflective layer, a stainless steel fastening strap, a sliding guide bracket, an air insulation layer, an external steel pipe, and an external anti-corrosion layer.