Insulation structure of steel insulating pipe can be divided into internal sliding type and external sliding type according to different sliding modes.

1、內(nèi)滑動式：保溫構(gòu)造由工作鋼管、硅酸鋁、減阻層、微孔硅酸鈣、隔熱層、不銹鋼緊固鋼帶、鋁箔反射層、聚氨酯保溫層、外套鋼管、外防腐層組成。

1. Inner sliding type: thermal insulation structure is composed of working steel pipe, aluminium silicate, drag reduction layer, micro-porous calcium silicate, thermal insulation layer, stainless steel fastening strip, aluminium foil reflective layer, polyurethane thermal insulation layer, coated steel pipe and external anti-corrosion layer.

外滑動式：保溫構(gòu)造由工作鋼管、玻璃棉保溫隔熱層、鋁箔反射層、不銹鋼緊固帶、滑動導(dǎo)向支架、空氣保溫層、外護(hù)鋼管、外防腐層組成。

External sliding type: thermal insulation structure consists of working steel pipe, glass wool thermal insulation layer, aluminum foil reflective layer, stainless steel fastening belt, sliding guide bracket, air thermal insulation layer, exterior steel pipe and exterior anti-corrosion layer.

鋼套鋼蒸汽保溫管由內(nèi)而外分別是：工作鋼管：保證保送介質(zhì)正?；顒?；減阻層: 保證工作鋼管熱脹冷縮自在運(yùn)動；無機(jī)硬質(zhì)保溫層：耐高溫，保證與有機(jī)保溫層之間的界面溫度，保證泡沫不被炭化；阻隔、反射層: 保證有機(jī)泡沫資料不進(jìn)入無機(jī)硬質(zhì)耐高溫層；反射耐高溫層局部熱量；聚氨酯泡沫層: 保證介質(zhì)溫度，保證外護(hù)管外表堅(jiān)持常溫；外護(hù)鋼管: 維護(hù)保溫層免受公開水腐蝕，支撐工作管并能接受一定的外部荷載，保證工作管正常工作；防腐層：維護(hù)外鋼管防止腐蝕物腐蝕鋼管，延長鋼管運(yùn)用壽命。

The steel sleeve steel steam insulation pipe is from inside to outside: the work pipe: ensure the normal activity of the conveying medium; reduce the resistance layer: ensure the work pipe expands and shrink freely; the inorganic hard insulation layer: high temperature resistance, ensure the interface temperature between the organic insulation layer and ensure that the foam is not carbonized; barrier and reflective layer: ensure that the organic foam data do not enter the inorganic hard and high temperature resistant layer; reflection. High temperature resistant layer of local heat; polyurethane foam layer: ensure the medium temperature, ensure the external tube surface to adhere to the normal temperature; external protection steel pipe: maintain the insulation layer from open water corrosion, support the work pipe and accept certain external load, ensure the work of Guan Zhengchang work; anti-corrosion layer: protect the external steel pipe to prevent corrosivity corrosion steel pipe, prolong the service life of the steel pipe.

鋼套鋼直埋保溫管的組成局部是，保送介質(zhì)的鋼管，防腐外套鋼管，還有鋼管和鋼管之間用來填充的超細(xì)玻璃棉互相組合而成。鋼套鋼直埋保溫管還有另外一種合成方式，那就是采用石墨和硅鈣瓦管殼，加上用來填充的聚氨酯泡沫。

The components of steel-lined steel direct-buried insulation pipes are composed of steel pipes for medium delivery, anti-corrosion coated steel pipes, and ultra-fine glass wool for filling between steel pipes and steel pipes. Another way to synthesize steel sleeve steel directly buried insulation pipes is to use graphite and silicon calcium tiles, plus polyurethane foam for filling.

鋼套鋼直埋保溫管其實(shí)真正的做好維護(hù)管的首要，就是要做好管道的緊密防水能否牢靠，還有在機(jī)械強(qiáng)度上有良好的性能，由于鋼套管是運(yùn)用強(qiáng)度高采用焊接銜接的辦法，所以在防水的密封性能還是十分高的，另重要的是其耐高溫性能也是也不是別的外維護(hù)管可以相比的。

In fact, the first thing to do a good job of maintenance pipe is to do a good job of tight waterproofing of the pipe, and have good performance in mechanical strength. Because the steel casing is welded joints with high strength, the sealing performance of waterproofing is very high, and the other important thing is that its high temperature resistance is also not other external maintenance pipe can be used. By comparison.

特別是在公開水位高的地域可以正常運(yùn)轉(zhuǎn)，在外維護(hù)層還采用了十分鞏固、密閉的鋼管外殼。鋼套鋼直埋保溫管埋設(shè)技術(shù)主要的功用就是做好防水和防漏，并且可以好抗?jié)B、抗壓，還是全封鎖的埋設(shè)技術(shù)，這項(xiàng)技術(shù)在直埋敷設(shè)技術(shù)在公開水位較高地域運(yùn)用的有很好的效果。

Especially in areas with high open water level, it can operate normally. In the outer maintenance layer, a very consolidated and sealed steel tube shell is also used. The main function of the burying technology of steel-jacketed direct-buried insulating pipe is to do well in waterproof and leak-proof, and to be the best anti-seepage and anti-compression, or to be the fully blocked burying technology. This technology has a good effect in the areas with high open water level.