中文字幕在线永久视频 I 亚洲草原天堂 I 在线播放网站 I 成人在线影片 I 精品国产三级a∨在线观看 I 国产黄色片在线看 I 欧美亚洲福利 I 欧美性啪啪 I 免费日本a级片 I 中文亚洲爆乳av无码专区 I 国产在视频线精品视频 I 亚洲天堂成人在线观看 I 久久99操 I 欧美裸体男粗大1609 I 一区二区在线视频观看 I 人人妻人人澡av I 国产成人亚洲影院在线播放 I 亚洲第一网站 I 丁香婷婷视频 I 国内精品久久久久av福利秒拍 I 男人猛躁女人网站 I 久久第二页 I 久久99精品久久久大学生 I 在线a I 国产一区二区国产 I 一级特黄aaaaaa大片 I 暖暖的在线观看日本社区 I 午夜黄色大片 I 狠狠操狠狠摸 I va婷婷 I 国产69精品久久久久孕妇不能看 I 日韩 欧美 一起 I 久草在线新免费首页资源站 I 素人视频在线观看免费 I 亚洲女同志亚洲女同女同

Welcome to Dongguan Zhuangyuan Energy Technology Co., Ltd. official website! Favorites | Home | Contact us | 中文版 | ENGLISH



      Specializing in the production
      of ppr pipe insulation
1, five-star hotels in Switzerland developed dedicated pipe
2, both open both hot without waiting
3, energy saving, safe and comfortable

News center

National service hotline:4008-3299-18
Address: 215 Ridge hem short paragraph Wan Long Road, Dalingshan Town, Dongguan
Contact: Miss Zhang
Mobile: 18998025128
Tel: 0769-85608778
Fax: 0769-85609778
E-mail: 2892261099@qq.com

Industry News

Your Current Location : Home News center Industry News

Basics PP-R and PP-R pipe

Source: Time:2014-10-14 22:35:44 views:

PPR pipe called three polypropylene tube, through the use of random copolymer polypropylene extruded into pipes, injection molded into the tube. Europe in the early 1990s the development and application of new plastic pipe products. PP-R is the late 1980s, using a gas phase copolymerization process so that about 5% PE in the molecular chain of PP random evenly polymerization (random copolymer) and a new generation of pipe materials. High strength, impact resistance and has good long-term creep performance. Life of up to 50 years, the market does not have any kind of cheaper materials can replace it. PPR pipe is used in most home improvement projects a water supply pipeline. PPR pipe interface with hot-melt technology, between the tubes completely fused together, so once installed pressure test through, never again leaks, high reliability. This is not to say that the water is not defective PPR pipes, heat resistance, pressure resistance somewhat less, long-term working temperature should not exceed 70 ℃; each finite length, and can not bend construction, long distance or if the pipeline around the corner and more, in the construction necessary to use a large number of joint; pipe fittings cheap but the price is relatively high. From the overall performance is concerned, PPR pipe is the high cost of the pipe, so the material of choice for home improvement plumbing transformation.
In the water reform in general, will replace the existing pipes, hot water pipes when all selected home improvement companies and businesses in the proposed installation of PPR pipe fitting, even if the cold water flowing through places with hot water pipes. PPR pipe diameters from 16mm to 160mm, home improvement is mainly used in 20mm, 25mm two kinds of (respectively known as 4 charge, charge 6), which used some more 4 charge. PP-R pipe in addition to general plastic tube with a light weight, corrosion-resistant, non-scaling, long life and other characteristics, but also has the following main features: non-toxic and health. PP-R materials molecule only carbon and hydrogen elements, no harmful toxic elements are present, hygiene can be *, not only for the hot and cold water pipes, can be used to clean drinking water systems. Energy-saving insulation. PP-R pipe thermal conductivity of 0.21w / mk, only steel pipe 1/200. Good heat resistance. Vicat softening point of PP-R pipe 131.5 ℃. The maximum operating temperature of up to 95 ℃, to meet building water specification requirements of hot water system. long lasting. PP-R pipe in working temperature 70 ℃, working pressure (PN) 1.OMPa conditions, the service life of up to 50 years; at room temperature (20 ℃) life of up to 100 years. Recyclable materials. PP-R waste through clean, after crushing recycling in pipe, tube production. Regrind amount does not exceed 10% of the total, does not affect product quality.
PPR PP-
1. polymerized from a monomer molecule from macromolecules called homopolymer (Homonolymer), composed of two or more than two kinds of molecules called monomers polymerized macromolecular copolymer (Copolymer);
2.PP-H is the polymerization of propylene Propylene monomer molecule made of a homopolymer;
3.PP-B and PP-R is polymerized from propylene monomer and ethylene monomer Ethene Propylene copolymer formed by (Poly Propylene Copolymer, i.e. PP-C) wherein:
1) The use of advanced technology gas copolymer, PE in the molecular chain of PP random, the polymerization uniformly, this material commonly known as PP-R (polypropylene random copolymer);
2) the use of PP and PE block copolymer, this material commonly known as PP-B (polypropylene block copolymer) .
What is PPR pipe? PPR pipe: As a new water pipe material, PPR tube has unique advantages, it can be used as cooling pipes, hot water pipes can also be used, because of its non-toxic, light, pressure, corrosion resistance, is becoming An extended material. Also applies to hot water pipes, and even clean drinking water pipeline. PPR pipe interface with hot-melt technology, between the tubes completely fused together, so once installed pressure tested, not like the presence of aluminum pipe as a long time aging water leakage, but not scaling PPR pipe.
Home  |  About us  |  Products  |  Projects  |  Solution  |  News center  |  Witness  |  Contact us  |  Rolling products  | 
Dongguan Zhuangyuan Energy Technology Co., Ltd. All Rights Reserved
Address: 215 Ridge hem short paragraph Wan Long Road, Dalingshan Town, Dongguan    Phone:0769-8560 8778   Fax:0769-8560 9778
URL:http://m.zrpm.cn   Technical Support:ShangenManagement
主站蜘蛛池模板: 亚洲国产成人一区二区三区 | 亚洲免费观看视频 | 女人下边被添全过视频 | 欧美日韩精品一区二区三区 | 又大又硬又爽免费视频 | 亚洲国产综合另类视频 | 亚洲一区国产二区 | 少妇被粗大的猛进69视频 | 欧美激情一区二区三区视频高清 | 学院传说之三生三世桃花缘 | 欧美老熟妇喷水 | 7777精品伊人久久久大香线蕉 | 欧美视频一区 | 欧美黑人性暴力猛交喷水 | 欧美 亚洲 另类 丝袜 自拍 动漫 | 精品久久精品 | 无码av免费一区二区三区 | 成人免费视频在线观看 | 久久99久久| 久久精品aⅴ无码中文字字幕蜜桃 | 亚洲中文字幕无码爆乳av | 天天操天天插 | 香港aa三级久久三级 | 免费精品一区二区三区在线观看 | 激情做a全过程片A | 玖玖玖免费观看视频 | 中文无码热在线视频 | 久久美女精品国产精品亚洲 | 波多野结衣中文丝袜字幕 | 大伊香蕉在线观看视频 wap | 国产精品久久自在自线不卡 | 亚洲欧美韩国日产综合在线 | 热er99久久6国产精品免费 | 麻豆changesxxx国产 | 国产日韩视频 | 亚洲黄色免费观看 | 综合精品在线 | 91视频网国产 | 麻豆久久久久 | 看一天影院宅急看在线观看 | 久久精品免费一区二区三 | 人妻丝袜无码专区视频网站 | 国产精品视频在线观看 | 丰满少妇久久久久久久 | 精品女同一区二区 | 色爱区综合五月激情 | 中文人妻无码一区二区三区 | 国产欧美精品午夜在线播放 | 日韩一区二区在线视频 | 天天搞天天搞 | 成人艳情一二三区 | 91成人午夜性a一级毛片 | 久久精品国产99国产精品澳门 | 亚州综合 | 丁香亚洲| 婷婷qvod | 古装三级在线观看 | 国产精品无码一区二区桃花视频 | 美女视频黄a视频免费全过程 | 日韩免费无码一区二区视频 | 亚洲国产综合精品中文第一区 | 日韩色小说 | 亚洲精品第一国产综合野草社区 | 可以免费看的黄色片 | 国产网曝门亚洲综合在线 | 亚洲一级在线观看 | 日本高清aⅴ毛片免费 | 丝袜美腿视频一区二区三区 | 免费看美女被靠到爽的视频 | 亚洲综合无码一区二区三区 | 欧美女人天堂 | 国产视频中文字幕 | 精品96久久久久久中文字幕无 | 最新中文字幕 | 欧洲午夜视频 | 亚洲高清在线视频 | 欧美大片一区二区三区 | 一区二区三区欧美在线 | 色图综合网 | 亚洲电影在线观看 | 日本真人做人试看60分钟 | 99久久99久久免费精品蜜桃 | 在线精品视频一区二区三区 | 女人高潮被爽到呻吟在线观看 | 视频一区二区不卡 | 99热综合在线 | 亚洲成熟女人毛毛耸耸多 | 亚洲人jizz日本人处 | 国产aⅴ激情无码久久久无码 | 精品特级毛片 | 亚洲乱码在线 | 人人妻人人做人人爽 | 久久国产成人 | 亚洲精品一区二区网址 | 欧美中日韩免费观看网站 | 免费播放欧美一级特黄 | 久久性 | 国产日韩在线观看一区 | 奇米第四狠狠777高清秒播 |