Steel sleeve steel insulation steel pipe manufacturer

Steel-in-steel composite insulation steel pipe insulation structures can be divided into two categories according to different sliding methods: Internal sliding type: The insulation structure consists of a working steel pipe, an aluminum silicate drag reduction layer, a microporous calcium silicate insulation layer, a stainless steel fastening steel strip, an aluminum foil reflective layer It consists of a polyurethane insulation layer and an outer anti-corrosion layer on the steel pipe. The internal sliding insulated steel pipe is composed of a steel pipe for transporting media + composite silicate or microporous calcium silicate + rigid polyurethane foam + outer steel pipe + glass fiber reinforced plastic shell anti-corrosion protective layer structure. The insulation treatment technology for various pipe fitting nodes is mature and of reliable quality.
Exterior sliding type: The insulation structure is composed of a working steel pipe, a glass wool insulation layer, an aluminum foil reflective layer, a stainless steel fastening steel belt, a sliding guide bracket, an air insulation layer, an outer protective steel pipe, and an outer anti-corrosion layer.
External sliding insulated steel pipe structure
Inner steel pipe
Zinc-rich primer
Sliding guide bracket
High temperature resistant glass wool
Aluminum foil reflective layer
Air insulation layer
Jacketed steel pipe
Jacketed steel pipe anti-corrosion layer
Steel-clad steel composite insulated steel pipe is one of the directly buried underground pipes that can be directly buried underground without a concrete structure. The method is that the thermal expansion of the working steel pipe is carried out in the outer pipe, thereby reducing the material cost, shortening the construction date and ensuring the safety of the heating pipeline. It can be widely used safer in different temperature environments and is especially suitable for high-temperature steam pipeline projects. The operating temperature can reach ℃℃. Pipe ports are generally sealed with polyethylene film or three layers of cold-wrapped tape to prevent moisture or water from entering before installation or during construction. The multi-layer staggered seam wrapping of insulation materials effectively reduces heat loss. At the same time, control measures are taken on the surface of the jacket to prevent the occurrence of cold bridges, thereby ensuring the temperature control of the anti-corrosion layer of the jacket. Wrapping the multi-layer aluminum foil reflective layer with insulation material effectively reduces heat loss and makes the steam pipeline more economical and reasonable. The hydrophobic system adopts a fully enclosed form with flexible structure, reasonable safety and reliability. The moisture drainage pipe on the steel casing can not only discharge moist gas in time but also serve as an alarm signal pipe for daily operation. The thermal compensation of the pipeline adopts high-quality corrugated pipe compensator and installs it in the casing to make it directly buried. There is no need to set up an observation well, which is convenient for construction and short construction period. It is suitable for transporting steam or other media below .℃. This product uses steel pipes as the outer protective layer, which has the advantages of high strength, not easy to be damaged, easy construction and maintenance, and long service life.
Features of Insulated Pipes
Insulated pipes are widely used in liquid and gas transportation pipe networks, chemical pipeline insulation projects, petrochemical central heating networks, central air conditioning ventilation pipes, municipal projects, etc. High-temperature prefabricated direct-buried thermal insulation pipe is a direct-buried prefabricated thermal insulation pipe with good thermal insulation performance, safety, reliability and low engineering cost. Effectively solves the problems of thermal insulation, sliding lubrication and waterproofing of exposed pipe ends of prefabricated directly buried thermal insulation pipes for high temperature heat transfer in urban central heating. High-temperature prefabricated directly buried insulated pipes not only have advanced technical and practical performance that are difficult to match with traditional trench and overhead pipes, but also have significant social and economic benefits and are a powerful measure for heating and energy saving. The use of direct buried heating pipeline technology for high-temperature prefabricated directly buried insulated pipes marks that the development of China's heating pipeline technology has entered a new starting point. ?
The thermal insulation pipe is composed of a steel pipe, a fiberglass inner sheath, and a fiberglass outer shell. It is characterized by: it also includes a high-temperature-resistant insulation layer, a lubricating layer, and elastic seals. The utility model effectively solves the problems of thermal insulation, sliding lubrication and waterproofing of exposed pipe ends of prefabricated directly buried thermal insulation pipes used for high temperature heat transmission in urban centralized heating. ?
High-temperature prefabricated direct-buried insulation pipes are mainly composed of four parts.
Working steel pipes: Seamless steel pipes and double-sided submerged arc spiral welded steel pipes are used according to the technical requirements of the transmission medium.
Insulation layer: rigid polyurethane foam.
Protective shell: made of high-density polyethylene or fiberglass.
Leakage alarm line: When manufacturing high-temperature prefabricated direct-buried insulated pipes, an alarm line is buried in the insulation layer close to the steel pipe. Once leakage occurs somewhere in the pipe, an alarm will be issued and displayed on a special detection instrument through the conduction of the alarm line. The exact location of the leak and the extent of the leak can be used to notify maintenance personnel to quickly deal with the leaking pipe section to ensure the safe operation of the heating network.
Advantages and Features of High Temperature Prefabricated Directly Buried Insulated Pipes
Reduce project costs.
According to calculations by relevant departments, double-pipe heating pipes can generally reduce project costs by about (using fiberglass as the protective layer) and (using high-density polyethylene as the protective layer).
Low heat loss saves energy.