The prefabricated directly buried insulation pipe is composed of a conveying medium steel tube, a polyurethane rigid foam pipe insulation layer and a high-density polyethylene external protection pipe.

　　層:工作鋼管層

　　Layer: working steel pipe layer

　　根據(jù)設(shè)計(jì)和客戶要求選擇無(wú)縫螺旋焊管和直縫焊管。鋼管表面經(jīng)先進(jìn)拋丸除銹處理后，鋼管除銹可達(dá)gb8923-1988標(biāo)準(zhǔn)Sa2，表面粗糙度可達(dá)GB6060。在5-88標(biāo)準(zhǔn)下，R等于12。5微米。

　　According to the design and customer's requirements, we can choose seamless spiral welded pipe and straight welded pipe. After the surface of steel pipe is treated by advanced shot blasting, the rust removal of steel pipe can reach SA2 of gb8923-1988 standard, and the surface roughness can reach gb6060. At 5-88, R equals 12. 5 microns.

　　二樓:聚氨酯保溫

　　Second floor: polyurethane insulation

　　采用高壓發(fā)泡機(jī)將原溶液二次注入鋼管與外護(hù)套之間形成的空腔內(nèi)形成硬質(zhì)聚氨酯泡沫。俗稱“管中管發(fā)泡工藝”。其功能是防水，第二是保溫，第三是支撐熱凈重。在輸送介質(zhì)溫度為-50℃-120℃時(shí)，選擇硬質(zhì)聚氨酯泡沫塑料作為保溫層。

　　A rigid polyurethane foam was formed by injecting the original solution into the cavity formed between the steel pipe and the outer sheath two times by using the high-pressure foaming machine. Commonly known as "tube in tube foaming process". Its function is waterproof, the second is heat preservation, and the third is to support the thermal net weight. Rigid polyurethane foam is selected as the insulation layer when the conveying medium temperature is -50 C -120 C.

　　三層:高密度聚乙烯保護(hù)層

　　Three layers: high density polyethylene protective layer

　　預(yù)制黑色(黃色)塑料管具有固定的壁厚，其作用是保護(hù)聚氨酯保溫層免受機(jī)械損傷，其次，防腐防水。先進(jìn)的設(shè)備，優(yōu)秀的技術(shù)人員，科學(xué)的管理模式，完善的質(zhì)量保證體系，合理的價(jià)格。

　　The prefabricated black (yellow) plastic pipe has a fixed wall thickness. Its function is to protect the polyurethane insulation layer from mechanical damage. Secondly, it is anti-corrosion and waterproof. Advanced equipment, excellent technical personnel, scientific management mode, perfect quality assurance system and reasonable price.

　　預(yù)制直埋保溫管

　　Prefabricated directly buried insulation pipe

　　預(yù)制直埋保溫管的優(yōu)點(diǎn)主要體現(xiàn)在以下幾個(gè)方面:

　　The advantages of prefabricated directly buried insulation pipe are mainly reflected in the following aspects:

　　1、耐腐蝕性:化學(xué)惰性材料，具有優(yōu)異的耐腐蝕性，并可根據(jù)輸送介質(zhì)的不同選擇不同的耐腐蝕管道。

　　1. Corrosion resistance: chemical inert material, with excellent corrosion resistance, and can choose different corrosion-resistant pipes according to different transmission medium.

　　2. 機(jī)械強(qiáng)度高:耐超高水壓、耐外壓、耐沖擊強(qiáng)度均較好，可按要求壓力設(shè)計(jì)制造管材及管件。

　　2. High mechanical strength: it has good resistance to ultra-high water pressure, external pressure and impact, and can be designed and manufactured according to the required pressure.

　　3.溫度適應(yīng)性強(qiáng):預(yù)制直埋保溫管溫度范圍大于-70℃，小于250℃，且在冷凍介質(zhì)下不破裂。

　　3. Strong temperature adaptability: the temperature range of prefabricated directly buried insulation pipe is more than - 70 ℃, less than 250 ℃, and it will not break under the freezing medium.

　　4. 低流體阻力:管道內(nèi)壁光滑，粗糙度系數(shù)為0。在相同流量下，可以減小管徑。

　　4. Low fluid resistance: the inner wall of the pipe is smooth, and the roughness coefficient is 0. Under the same flow rate, the pipe diameter can be reduced.

　　5、重量輕，壽命長(zhǎng):質(zhì)量輕，運(yùn)輸方便，施工成本低，無(wú)需維護(hù)，使用壽命可達(dá)50年以上。

　　5. Light weight, long service life: light weight, convenient transportation, low construction cost, no maintenance, service life up to more than 50 years.

　　6、確保水質(zhì):確保水質(zhì)無(wú)毒，確保輸送的飲用水，能長(zhǎng)期保持水質(zhì)健康。

　　6. Ensure the water quality: ensure the water quality is non-toxic, ensure the delivery of drinking water, can maintain the long-term health of water quality.

　　以上是黑夾克直埋式直縫鋼管小編為大家介紹的相關(guān)內(nèi)容，想要了解更多內(nèi)容，歡迎訪問(wèn)網(wǎng)站：http://www.qndr49.cn

　　The above is the introduction of the black jacket direct buried straight seam steel tube. If you want to know more, please visit the website: http://www.qndr49.cn