<strike id="ck4ak"></strike>
<ul id="ck4ak"></ul>
  • <tr id="ck4ak"></tr>
  • <samp id="ck4ak"></samp>
  • <ul id="ck4ak"><tbody id="ck4ak"></tbody></ul>
    自拍偷拍亚洲一区,亚洲人成网站18禁止无码,激情丁香婷婷,欧美老熟妇又粗又大,久久青草免费视频,国产91色在线播放免费,日本55丰满熟妇厨房伦,亚洲国产精品久久久久婷婷老年

    認(rèn)證資料 Certification Data

    官網(wǎng)測試有限公司

    • 聯(lián)系人:測試線上
    • 官網(wǎng)地址:http://www.lcxyhbsb.com
    • 經(jīng)營模式:制造商
    • 主營產(chǎn)品:播音與主持藝術(shù),戲劇影視表演,廣播電視編導(dǎo), 北京
    • 所在地:北京亦莊經(jīng)濟(jì)技術(shù)開發(fā)區(qū)測試街122號
    • 供應(yīng)產(chǎn)品:14
    進(jìn)入官網(wǎng)
    當(dāng)前位置:首頁>企業(yè)動態(tài)> What are the characteristics of insulated steel pipe manufacturers china

    What are the characteristics of insulated steel pipe manufacturers china

    發(fā)布時間:2020-06-30

    The insulation pipe manufacturers china is coated with thermosetting epoxy powder or lined with PE pipes and steel pipes for corrosion resistance. The density of rigid polyurethane foam insulation material increased by 60 kg / cubic meter to 80 kg / cubic meter, the space between the whole steel pipe and the casing, and has a certain bond strength, so that the steel pipe, casing and insulation layer form a solid whole. The advantages of the product are: good heat preservation performance, heat loss only 25% of the traditional pipe, long-term operation can save a lot of energy, significantly reduce energy costs. It also has good corrosion resistance and low-temperature impact resistance, can be directly buried in frozen soil. It has strong waterproof F and corrosion resistance. It can be directly buried in underground or water. It can be directly buried in underground or water Set up alarm system, automatically detect leakage fault, accurately locate fault indication and automatically alarm. It is especially suitable for liquid transportation of corrosive medium by using hot spring water and so on, extending the service life of pipeline. The service life can reach 30 to 50 years. Reasonable installation and use can make the maintenance cost of pipeline network extremely low Polyurethane thermal insulation material has good mechanical and thermal insulation properties. It can be modified or combined with other heat-resistant materials at a temperature of 180 ℃, usually at 120 ℃ Polyurethane insulation foam materials: rigid polyurethane foam, semi rigid polyurethane foam and soft polyurethane foam. The first is used for building insulation materials, polyurethane rigid foam insulation (thermal insulation pipeline facilities, etc.), daily necessities (such as bedding, sofa, fridge, air conditioning, insulation and surfboards and other core materials). As well as means of transport (car, aircraft, railway vehicle cushion, ceiling and other materials) Polyurethane heat preservation pipe coating: polyurethane coating has strong adhesion and excellent wear resistance, water resistance and corrosion resistance. It is first used in furniture, building material coating and industrial ink. Polyurethane adhesive can complete the layout of curing function by adjusting the proportion of isocyanate and polyol, Polyurethane adhesive is used in packaging, construction, wood, automobile, shoemaking and so on The full name of the polyurethane foam insulation pipe is high density polyethylene external protective tube polyurethane foam prefabricated directly buried insulation pipe, which is made of the conveying medium, the task steel pipe, the polyurethane insulation layer, and the polyethylene plastic external protection pipe, which are combined through the equipment. Prefabricated directly buried insulation pipes of high density polyethylene external protective tube polyurethane foam are widely welcomed by its excellent functions, convenient construction and long service life (30 years -50 years). Its structure is: external maintenance layer, insulation layer, and anti leakage layer three parts. The outer maintenance layer is polyethylene jacket pipe or FRP or other materials. There are three ways of laying: directly buried, overhead and trench. Features of polyurethane foam insulation steel pipe: 1. Polyurethane foam insulation steel pipe manufacturers china reduces project cost. 2. Low heat loss, waste of power. 3. Polyurethane foam insulation steel pipe is anticorrosive, with good insulation function and long service life. 4. Polyurethane foam insulation steel pipe occupies less land, construction is fast, and is favorable for environmental maintenance. 5. Polyurethane foam insulation steel pipe is safe. Maintenance layer of polyurethane foam insulated steel pipe: the polyurethane foam insulated steel pipe is divided into three layers from the inside to the outside: the first layer: task steel pipe layer: seamless steel pipe, spiral steel pipe and straight seam steel pipe are generally selected according to the design and customer requirements. After the steel tube surface is treated by advanced shot blasting and rust removal process, the rust removing level of the steel pipe can reach GB/T8923.1. second layers: polyurethane insulation layer: the high pressure foaming machine is injected into the cavity of the steel tube and the outer sheath in a single way, which is commonly called "tube in tube foaming". The third layer: HDPE maintenance layer: prefabricated into a certain wall thickness of black or yellow polyethylene plastic pipe. Polyethylene is odorless, nontoxic, waxy, and has excellent high temperature resistance function. The minimum operating temperature can reach - 70 ~ - 100 ℃. It has good chemical volatility and can withstand the corrosion of a large number of acid and alkali (not resistant to acid with oxidation property). It is insoluble in ordinary solvent at room temperature and has little water absorption. However, because it is a linear molecule, it can slowly dissolve in some inorganic solvents without swelling and electrical insulation work Excellent. Its function is to protect the polyurethane insulation layer from the damage of the machine hardware, and to prevent water and corrosion.

    主站蜘蛛池模板: 长海县| 在线一区二区三区视频观看| 精品国产爱在线观看| 国产女主播福利一区在线观看| 高阳县| 中文字幕在线人妻视频| 日本a级护士潮喷一区| 亚洲欧美成人中文在线网站| 泰来县| 莎车县| 国产精品成人av电影不卡| 丰满少妇a级黄片在线免费观看| 黑人免费一区二区三区| 鸡泽县| 抚宁县| 达拉特旗| 平泉县| 杭州市| 密山市| 兴安盟| 安吉县| 额济纳旗| 四子王旗| 抚宁县| 亚洲色欲色欲大片WWW无码| 兴业县| 南江县| 双峰县| 政和县| 读书| 无码精品一区二区三区免费16| 定州市| 日本不卡一区二区高清中文| 葫芦岛市| 精品理论一区二区三区| 涞源县| 亚洲国产精品久久久久婷婷软件| 亚洲国产成人精品激情| 好爽~又到高潮了毛片视频| 国产精品不卡在线视频| 手机免费在线观看av网站|