1. Internal Sliding Type: The insulation structure consists of the working steel pipe, aluminum silicate, friction reduction layer, microporous calcium silicate, thermal insulation layer, stainless steel fastening steel belt, aluminum foil reflective layer, polyurethane insulation layer, outer steel pipe, and outer anti-corrosion layer. Internal sliding insulated steel pipes are composed of a steel pipe that transports the medium, combined with silicate or microporous calcium silicate, rigid polyurethane foam plastic outer steel pipe, and a glass-reinforced plastic anticorrosion protective layer. The insulation technology for various pipe nodes is mature and reliable.

2. External Sliding Type: The insulation structure consists of the working steel pipe, glass wool insulation layer, aluminum foil reflective layer, stainless steel fastening steel belt, sliding guide bracket, air insulation layer, protective outer steel pipe, and outer anti-corrosion layer.