1.防腐层：维护外钢管防止腐蚀物腐蚀钢管，延长钢管运用寿命。
1. Anti-corrosive coating: Maintain external steel pipe to prevent corrosion and prolong service life of steel pipe.
2.外护钢管: 维护保温层免受公开水腐蚀，支撑工作管并能接受一定的外部荷载，保证工作管正常工作。
2. External protection steel pipe: Maintain insulation layer from open water corrosion, support working pipe and accept certain external loads to ensure the normal operation of working pipe.
3.聚氨酯泡沫层: 保证介质温度，保证外护管外表坚持常温。
3. polyurethane foam layer: ensure the medium temperature, ensure the external tube surface to adhere to normal temperature.
4.阻隔、反射层: 保证有机泡沫资料不进入无机硬质耐高温层；反射耐高温层局部热量。
4. barrier, reflective layer: ensure that the organic foam data do not enter the inorganic hard and high-temperature resistant layer; reflect the heat resistance of the high temperature layer.
5.无机硬质保温层：耐高温，保证与有机保温层之间的界面温度，保证泡沫不被炭化。
5. inorganic hard insulation layer: high temperature resistance, ensure the interface temperature between the organic insulation layer and ensure that the foam is not carbonized.
6.减阻层: 保证工作钢管热胀冷缩自在运动。
6. Drag Reduction Layer: Guarantee the free movement of hot expansion and cold contraction of working steel pipe.
7.工作钢管：保证保送介质正常活动。
7. Working steel pipe: Ensure the normal activity of delivery medium.
产品构造：
Product structure:
钢套钢直埋保温管由内工作钢管、外维护钢管和中间保温层组成。工作钢管经喷砂涂两层防锈漆。保温层由高温纤维毡、超细微孔硅酸钙保温瓦和聚氨酯泡沫塑料组成。外套钢管作喷砂处置后缠绕六层玻璃纤维和树脂防腐层。
Steel jacket steel directly buried insulation pipe is composed of internal working steel pipe, external maintenance steel pipe and intermediate insulation layer. The working steel pipe is sandblasted with two layers of anti-rust paint. The insulation layer consists of high temperature fiber felt, ultra-fine micro-porous calcium silicate insulation tile and polyurethane foam plastic. The coated steel pipe is sandblasted and wound with six layers of glass fiber and resin anticorrosive coating.
性能特性：
Performance characteristics:
1、防水防潮
1. Waterproof and moisture-proof
2、耐高温高压，适用介质温度350℃，压力2.5Mpa
2. High temperature and high pressure resistance, suitable for medium temperature 350 C, pressure 2.5 Mpa
3、热耗低，保温效果优于任何一种传统保温方式
3. Low heat consumption, better heat preservation effect than any traditional heat preservation method.
4、防腐才能强，防腐层强度高，不易毁坏
4. Anti-corrosion ability is strong, anti-corrosion coating is strong and not easy to destroy.
5、运用寿命长，可达30－50年寿命
5. Long service life, up to 30-50 years
钢套钢蒸汽保温管一种是由保送介质的钢管、防腐外套钢管以及钢管与外套钢管之间填充的超细玻璃棉组合而成,也可采用石墨、硅钙瓦管壳及填充聚氨酯泡沫复合而成。钢套管（钢套钢）埋设技术是一种防水、防漏、抗渗、抗压和全封锁的埋设新技术，是直埋敷设技术在公开水位较高地域运用的一次较大打破。
A steam insulated pipe with steel sleeves is made up of a super fine glass wool which is filled with a steel pipe, an anticorrosive coat tube, and a steel tube filled with steel tube and outer steel pipe. It can also be made of graphite, calcium silicate tile and polyurethane foam. Steel sleeve (steel sleeve) embedding technology is a new embedding technology of waterproof, leak-proof, impermeability, compression and full blockade. It is a great break in the application of direct embedding technology in areas with high open water level.
直埋管道的维护管的首要问题是紧密防水的牢靠性，此外要有良好的机械强度，钢套管由于强度高采用焊接衔接，防水的密封性能牢靠性非常高，另外，其耐高温性能也是其它外维护管所不能比较的。
The primary problem for the maintenance pipe of directly buried pipeline is the reliability of tight waterproof. Besides, it should have good mechanical strength. Because of the high strength of steel sleeve, welding connection is adopted, the reliability of waterproof sealing performance is very high. In addition, its high temperature resistance performance can not be compared with other external maintenance pipes.
钢套钢保温管钢套钢蒸汽保温钢管钢套钢蒸汽保温管，钢套钢保温钢管它是由保送介质的钢管、防腐外套钢管以及钢管与外套钢管之间填充的超细玻璃棉组合而成,也可采用石墨、硅钙瓦管壳及填充聚氨酯泡沫复合而成。
Steel sleeve steel thermal insulation pipe steel sleeve steel steam thermal insulation steel pipe steel sleeve steam insulation pipe, steel sleeve steel heat preservation steel pipe, it is made of the super fine glass wool which is filled with the steel pipe, the anticorrosive coat pipe and the filled steel tube between the steel pipe and the outer steel pipe, and it can also be made of graphite, calcium silicate tile shell and polyurethane foam.
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