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<span class="prev"></span> <span class="next"></span> </div> </div> <!-- banner End --> <div class="main w1200"> <div class="mainL fl"> <h4></h4> <dl> <dt><a href="/pprgc/" title="PPR管材">PPR管材</a></dt> <dd><a href="/supply-1.html">铝塑PPR管材</a></dd> <dd><a href="/supply-2.html">PPR管批发厂?/a></dd> <dd><a href="/supply/3.html">石家庄PPR?/a></dd> <dd><a href="/supply/4.html">河北PPR管材</a></dd> <dt><a href="/pertdng/" title="PERT地暖?>PERT地暖?/a></dt> <dd><a href="/supply/10.html">PERT地暖?/a></dd> <dd><a href="/supply/11.html">PERT地暖管批?/a></dd> <dd><a href="/supply/12.html">采暖管地暖管</a></dd> <dd><a href="/supply-13.html">PERT地暖管价?/a></dd> <dt><a href="/pprgj/" title="PPR管件">PPR管件</a></dt> <dd><a href="/supply-5.html">PPR?/a></dd> <dd><a href="/supply/7.html">石家庄PPR管件</a></dd> <dd><a href="/supply-9.html">河北PPR管件</a></dd> <dd><a href="/supply-67.html">ppr地暖?/a></dd> <dt><a href="/pvcgc/" title="PVC管材">PVC管材</a></dt> <dd><a href="/supply-17.html">专业生产PVC管材</a></dd> <dd><a 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src="http://cmsimgshow.zhuchao.cc/11441/201705201551461091144151735.jpg?path=www.shentongppr.com/uploads/cp/201705201551461091144151735.jpg" class="tip" width="163" height="144" onload="imgZoomer(this,163,144)"/></p><b></b></td> <td valign="top"> <div class="proct_bg1"> <table width="100%" border="0" cellspacing="1" cellpadding="0"> <tr> <th width="20%">产品名称?/th> <td><h1><span id="nesttitle">PPR管批发厂?/span></h1></td> </tr> <tr> <th>来源?/th> <td><a href='/supply-2.html'>http://www.foropasion.com/supply-2.html</a></td> </tr> <tr> <th>发布时间?/th> <td>2013/8/23 0:00:00</td> </tr> </table> </div> </td> </tr> </table> <div><div> <p> <span style="line-height:2;">    河北<a href="/pprgc/" target="_blank">PPR管材</a>管件-<a href="/supply-54.html" target="_blank">PPR铝塑?/a>厂家直销,质优价廉,欢迎新老客户来电洽谈订购?nbsp;</span> </p> <p> <span style="line-height:2;">    PPR管材与传统的铸铁管、镀锌钢管、水泥管等管道相比,具有节能节材、环保、轻质高强、耐腐蚀、内壁光滑不结垢、施工和维修简便、使用寿命长等优点,广泛应用于建筑给排水、城乡给排水、城市燃气、电力和光缆护套、工业流体输送、农业灌溉等建筑业、市政、工业和农业领域?/span> </p> <p> <span style="line-height:2;">如何辨别好的PP-R管材</span> </p> <p> <span style="line-height:2;">“看”外?/span> </p> <p> <span style="line-height:2;">颜色,好的PP-R管材色泽柔和均匀一致,无杂色?/span> </p> <p> <span style="line-height:2;">“摸”质?/span> </p> <p> <span style="line-height:2;">好的PP-R管材100%是PP-R原料(无任何添加料)质地纯正,表面光洁,手感柔和,伪PPR管材手感光滑,一般来说,颗粒粗糙的很可能掺和了杂质;</span> </p> <p> <span style="line-height:2;">“闻”气?/span> </p> <p> <span style="line-height:2;">PPR管材主要材料是聚丙烯,好的管材没有气味,差的则有怪味,很可能是掺和了聚乙烯,而非聚丙烯;</span> </p> <p> <span style="line-height:2;">“捏”硬?/span> </p> <p> <span style="line-height:2;">PPR管材具有相当的硬度,随随便便可以捏变形的管,肯定不是PP-R管;</span> </p> <p> <span style="line-height:2;">“量”壁?/span> </p> <p> <span style="line-height:2;">另外可以用游标卡尺测量,管壁厚是否达标且均匀,一般好管都是严格按国标生产,但这种方法要求对PPR管材国家标准有一定了解?/span> </p> <p> <span style="line-height:2;">“听”声?/span> </p> <p> <span style="line-height:2;">PPR管材落地声较沉闷,伪PPR管材落地声较清脆?/span> </p> <p> <span style="line-height:2;">“砸”弹?/span> </p> <p> <span style="line-height:2;">好的PPR管材,“回弹性”好,容易砸碎自然不是好的PPR管材,但气温低于10度再好的PPR管材也能砸碎。但硬度强不等于弹性好,有些厂家通过加入过多碳酸钙等杂质来提高硬度,怎么都砸不碎,用久了容易脆裂?由于PP-R原料的冷脆性在几个温度区间性能不同?0?5?23……)</span> </p> <p> <span style="line-height:2;">“烧”烟嗅味</span> </p> <p> <span style="line-height:2;">原料中混合了回收塑料和其他杂质的PP-R管会冒黑烟,有刺鼻气味。而好的材质燃烧后不仅不会冒黑烟、无气味,燃烧后,熔出的液体依然很洁净。(另外还可以“拉”,看它的拉“长度”)</span> </p> <p> <span style="line-height:2;">“熔?/span> </p> <p> <span style="line-height:2;">PP—R管道熔接时正常熔接温度在260?90℃范围内,在这温度段内熔接时熔接质量会有较好保证,如果在正常熔接参数下,熔接时产品能很轻松进入熔接模头,并且熔接堆积瘤已接近液体状的说明产品不是正宗的PP—R原料生产的,同时熔接堆积瘤如果是能快速冷却变硬(一?0秒内)的也能说明产品不是正宗的PP—R原料生产的,这是由于PP—R的特性之一就是保温效果较好,其冷却速度自然会较慢?/span> </p> <p> <span style="line-height:2;">看管材内径是否变形,管件是否拉丝,好的PPR管材不容拉丝,内径不易变形?/span> </p> <p> <span style="line-height:2;">“检?/span> </p> <p> <span style="line-height:2;">借用试验仪器进行检测有效区分产品优劣?/span> </p> </div> <p> <span style="line-height:2;"> </span> </p></div> <p>上一?<a href="/supply/3.html">石家庄PPR?/a>    下一?<a href="/supply/1.html">铝塑PPR管材</a></p> <div class="tag">相关标签?a 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