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（今日頭條）楊記者今日報道，3LPE防腐鋼管底層是環(huán)氧樹脂、中間層膠黏劑、外層聚乙烯形成的三層結(jié)構(gòu)為一體的防腐層，內(nèi)壁采用熱噴涂環(huán)氧粉末防腐，粉末經(jīng)高溫加熱熔結(jié)涂敷在管體表面上，形成鋼塑合金層。熔結(jié)環(huán)氧粉末鋼管分為兩種（單層和雙層），相比較而言雙層環(huán)氧粉末是*為理想的防腐層，施工原理是指采用單層熔結(jié)環(huán)氧粉末作為底涂層，采用改性熔結(jié)環(huán)氧粉末作為外防護(hù)層，使防腐層性能顯著提升，達(dá)到了高溫抗?jié)B透性、耐高溫性能和抗沖擊力的要求，保留了單層熔結(jié)環(huán)氧粉末防腐層與陰極保護(hù)的相容性能。下面介紹3PE防腐鋼管的產(chǎn)品特性和生產(chǎn)線的結(jié)構(gòu)特點(diǎn)。3PE防腐鋼管的檢驗(yàn)方法是利用一些物理現(xiàn)象進(jìn)行測定或檢驗(yàn)的方法。材料或工件內(nèi)部缺陷情況的檢查，一般都是采用無損探傷的方法。無損探傷有超聲波探傷、射線探傷、滲透探傷、磁力探傷等。受壓容器的強(qiáng)度檢驗(yàn):受壓容器，除進(jìn)行密封性試驗(yàn)外，還要進(jìn)行強(qiáng)度試驗(yàn)。常見有水壓試驗(yàn)和氣壓試驗(yàn)兩種。它們都能檢驗(yàn)在壓力下工作的容器和管道的焊縫致密性。氣壓試驗(yàn)比水壓試驗(yàn)更為靈敏和速，同時試驗(yàn)后的產(chǎn)品不用排水處理，對于排水困難的產(chǎn)品尤為適用。但試驗(yàn)的危險性比水壓試驗(yàn)大。進(jìn)行試驗(yàn)時，必須遵守相應(yīng)的安全技術(shù)措施，以防試驗(yàn)過程中發(fā)生事故。致密性檢驗(yàn):貯存液體或氣體的焊接容器，其焊縫的不致密缺陷，如貫穿性的裂紋、氣孔、夾渣、未焊透和疏松組織等，可用致密性試驗(yàn)來發(fā)現(xiàn)。致密性檢驗(yàn)方法有:煤油試驗(yàn)、載水試驗(yàn)、水沖試驗(yàn)等。鋼管的補(bǔ)焊焊縫、鋼帶對頭焊縫及環(huán)向縫應(yīng)進(jìn)行X射線或超聲波檢驗(yàn)。3LPE anti-corrosion steel pipe is epoxy resin, middle layer adhesive, the outer layer of polyethylene formed three-layer structure as one of the anti-corrosion layer, the inner wall using thermal spraying epoxy powder anticorrosion, powder by high temperature heating fusion knot coating on the tube body surface, forming a steel-plastic alloy layer. Fused epoxy powder pipe is divided into two (single-and double-layer), in contrast to the double-layered epoxy powder is an ideal anti-corrosion layer, the construction principle refers to the use of single-layer fused epoxy powder as the base coating, the use of modified fused epoxy powder as an outer protective layer, so that the performance of the anti-corrosion layer is significantly improved, High temperature resistance and anti-impact requirements, preserving the single layer of fusion epoxy powder coating and cathodic protection of the compatibility of the performance. The following is a description of 3PE corrosion-resistant steel pipe product characteristics and production line structure characteristics. The inspection method of 3PE anticorrosive steel pipe is a method of measuring or testing by using some physical phenomena. The inspection of defects in materials or workpieces is generally based on nondestructive testing. Nondestructive testing has ultrasonic testing, radiographic testing, penetrant testing, magnetic testing and so on. Pressure vessel strength Test: Pressure vessel, in addition to the sealing test, but also to carry out strength tests. There are two kinds of water pressure test and air pressure test commonly. They are able to verify the tightness of the weld seam of the vessels and pipelines working under pressure. The pressure test is more sensitive and faster than the hydrostatic test, and the product after the test is not drained, especially for the products with difficult drainage. But the test is more dangerous than the hydrostatic test. When conducting the test, the corresponding safety technical measures must be observed to prevent accidents during the test. Tightness test: The storage of liquid or gas welding vessel, the weld seam of the non-dense defects, such as the penetration of cracks, pores, slag, non-penetration and loose tissue, etc., can be found by the tightness test. The testing methods of compactness include: kerosene test, water carrying test, water impact test, etc. The weld seam of the welded steel pipe, the weld seam and the annular seam should be X-ray or ultrasonic examination.涂層具有良好的絕緣性，能在陰極保護(hù)作用下抵抗化學(xué)腐蝕，達(dá)到長期保護(hù)的目的。涂層具有很高的玻璃化溫度，應(yīng)用溫度范圍寬，能在–30～℃之間保持*性能施工方便、無需底漆、固化迅速，可流水線作業(yè)，涂裝效率高；管道檢測和修補(bǔ)簡便，涂層質(zhì)量容易控制。按使用方法可分為：管道內(nèi)噴涂用粉、管道外噴涂用粉、管道內(nèi)外通用粉。管道外噴涂用粉又分為：單層粉、雙層粉、三層結(jié)構(gòu)防腐用粉；3PE防腐鋼管母材包括螺旋管，直縫管，無縫管等，在我國廣泛應(yīng)用于石油、化工、天然氣、熱力、污水處理、水源、橋梁、鋼結(jié)構(gòu)，海洋輸水打樁等管道工程領(lǐng)域。管道在不同的工作環(huán)境中使用，為減緩或防止管道在外介質(zhì)的化學(xué)、電化學(xué)作用下或由微生物的代謝活動而被侵蝕和變質(zhì)在其外壁上涂2層或3層聚乙烯以達(dá)到管道防腐，3pe防腐管使用壽命延長3-5倍。、

在離心玻璃棉保溫層外，采用聚氨脂發(fā)泡工藝制作一層保溫層。保溫結(jié)構(gòu)設(shè)有三道防水墻：一是聚氨脂泡沫塑料；二是鋼卷外護(hù)管；三是玻璃纖維增強(qiáng)玻璃鋼。三道防水墻，層層防水!即便由于某種原因造成地下水滲入保溫結(jié)構(gòu)．那么，經(jīng)蒸汽烘烤將潮氣排出，保溫材料仍保持原來形狀，原來性能，管網(wǎng)仍能安全運(yùn)行。此保咨詢焦作鋼套鋼保溫鋼管熱線電話溫結(jié)構(gòu)的獨(dú)特之處就在于：即使保溫層內(nèi)存少量水，由于排潮通道好，能及時將潮氣排出保溫材料為優(yōu)質(zhì)超細(xì)玻璃棉管殼。超細(xì)玻璃棉管殼具有雙層錯縫包扎、接縫少，透氣性好的優(yōu)點(diǎn)，一旦保溫層在施工過程中進(jìn)水，完全可以通過逐步提高蒸氣溫度進(jìn)行抽氣排潮、逐步烘干。烘干后形狀和保溫性能保持良好。