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钢套钢复合保温钢管是地下直埋管道中的一种
钢套钢复合保温钢管是地下直埋管道中的一种，采用没有混凝土结构的情况下也可以进行地下直埋的方式，即工作钢管的热膨胀在外管内进行，从而降低了材料成本，缩短了施工日期，并保障了供热管道的安全性，可以在不同温度环境下更安全的广泛应用，尤其适用于高温蒸汽管道项目。使用温度可达150℃-450℃。管道端口一般选用聚乙烯薄膜或三层PE冷缠带密封，防止安装前或施工中进入潮气或水。保温材料多层错缝包扎，有效减少了热损失，同时在外套表面采取控制措施，防止冷桥的产生，从而使外套防腐层的温度控制得到了保证。用保温材料包扎多层铝箔反射层，有效减少了热损失，使蒸汽管道更加经济合理。疏水系统采用全封闭的形式，布置灵活，结构合理，安全可靠。钢套管上的排潮管既能及时排出潮湿气体，又可作为日常运行的报警信号管。管道的热补偿采用优质波纹管补偿器，并将其装设在套管内，做成直埋形式，无须设置观察井，施工操作方便、工期短。适用于输送2.5MPa、350摄氏度以下的蒸汽或其它介质，该产品用钢管做外防护层，具有强度高，不易损坏，施工检修简便，使用寿命长的优点。
Steel sheathed steel composite insulation steel pipe is one of the underground directly buried pipes. It can also be directly buried without concrete structure, that is, the thermal expansion of the working steel pipe can be carried out in the outer pipe, so as to reduce the material cost, shorten the construction date, and ensure the safety of the heating pipe. It can be widely used in different temperature environments, especially suitable for For high temperature steam pipeline project. The operating temperature can reach 150 ℃ - 450 ℃. The pipe end is generally sealed with polyethylene film or three-layer PE cold wrapping tape to prevent moisture or water from entering before installation or during construction. At the same time, control measures are taken on the surface of the outer jacket to prevent the cold bridge, so as to ensure the temperature control of the outer jacket anticorrosive coating. The reflective layer of multi-layer aluminum foil is wrapped with thermal insulation material, which effectively reduces the heat loss and makes the steam pipeline more economical and reasonable. The drainage system adopts the form of full sealing, flexible layout, reasonable structure, safety and reliability. The moisture discharge pipe on the steel sleeve can not only discharge the moist gas in time, but also serve as the alarm signal pipe for daily operation. The heat compensation of the pipeline adopts the high-quality bellows compensator, which is installed in the casing pipe and made into the direct burial form, without the need to set the observation well, so the construction operation is convenient and the construction period is short. It is suitable for conveying steam or other media under 2.5MPa and 350 ℃. The product uses steel pipe as the outer protective layer, with the advantages of high strength, not easy to damage, simple construction and maintenance, and long service life.
Steel sheathed steel composite insulation steel pipe is one of the underground directly buried pipes. It can also be directly buried without concrete structure, that is, the thermal expansion of the working steel pipe can be carried out in the outer pipe, so as to reduce the material cost, shorten the construction date, and ensure the safety of the heating pipe. It can be widely used in different temperature environments, especially suitable for For high temperature steam pipeline project. The operating temperature can reach 150 ℃ - 450 ℃. The pipe end is generally sealed with polyethylene film or three-layer PE cold wrapping tape to prevent moisture or water from entering before installation or during construction. At the same time, control measures are taken on the surface of the outer jacket to prevent the cold bridge, so as to ensure the temperature control of the outer jacket anticorrosive coating. The reflective layer of multi-layer aluminum foil is wrapped with thermal insulation material, which effectively reduces the heat loss and makes the steam pipeline more economical and reasonable. The drainage system adopts the form of full sealing, flexible layout, reasonable structure, safety and reliability. The moisture discharge pipe on the steel sleeve can not only discharge the moist gas in time, but also serve as the alarm signal pipe for daily operation. The heat compensation of the pipeline adopts the high-quality bellows compensator, which is installed in the casing pipe and made into the direct burial form, without the need to set the observation well, so the construction operation is convenient and the construction period is short. It is suitable for conveying steam or other media under 2.5MPa and 350 ℃. The product uses steel pipe as the outer protective layer, with the advantages of high strength, not easy to damage, simple construction and maintenance, and long service life.
