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href='http://bjjhd.cn/news/57.html'>http://bjjhd.cn/news/57.html</a> 发布日期Q?018-11-29 </div> <div id="rjxoi5b" class="news_content"> <p> <span style="font-size:16px;font-family:SimSun;"><a target="_blank" href="http://bjjhd.cn/news/57.html">l?a href="http://bjjhd.cn/psg/" target="_blank">排水?/a>道都有哪些?常用的都在这?jin)?/a></span> </p> <p> <span style="font-size:16px;font-family:SimSun;">镀锌钢?/span> </p> <p> <span style="font-size:16px;font-family:SimSun;">镀锌钢?表面有热R或电(sh)镀锌层的焊接钢。镀锌可增加钢管的抗腐蚀能力Qg长用寿命。镀锌管的用途很q,除作输水、煤气、a(b){一般低压力体的管U管外,q用作石油工业特别是h油田的a(b)井管、输油管Q化工焦化设备的油加热器、冷凝冷却器、煤馏洗油交换器用管Q以?qing)栈桥管桩、矿山坑道的支撑架用等。缺点:(x)Ҏ(gu)造成二次污染Q污染土壤和水体?/span> </p> <p> <br /> </p> <p> <span style="font-size:16px;font-family:SimSun;">铔R?/span> </p> <p> <span style="font-size:16px;font-family:SimSun;">用铸铁浇铸成型的子。铸铁管用于l水、排水和煤气输送管U,它包括铸铁直和g。铸铁管耐腐蚀、造h(hun)低、耐久性良好,~点是质地脆、重量大、长度短Q多用于埋地敯Q且要求环境温和E_、无较大震动?/span> </p> <p> <br /> </p> <p> <span style="font-size:16px;font-family:SimSun;">铜管</span> </p> <p> <span style="font-size:16px;font-family:SimSun;">铜管又称紫铜。有色金属管的一U,是压制的和拉制的无缝。铜具备了(jin)良好导电(sh)?导热性的Ҏ(gu),?sh)子产品的导电(sh)配件以及(qing)散热配件的主要材料Qƈ且成为现代承包商在所有住宅商品房的自来水道、供热、制L(fng)道安装的选择。铜抗腐蚀性能差,易氧化,且与一些液态物质v化学反应Q容易炜弯造型。铜重量较轻,导热性好Q低温强度高。常用于刉换热设备(如冷凝器{)(j)。也用于制氧讑֤中装配低温管路。直径小的铜常用于输送有压力的液体(如润滑系l、a(b)压系l等Q和用作仪表的测压管{?/span> </p> <p> <br /> </p> <p> <span style="font-size:16px;font-family:SimSun;">塑料(PVC、PE、PPRQ?/span> </p> <p> <span style="font-size:16px;font-family:SimSun;">塑料一般是以合成树(wi)脂,也就是聚酯ؓ(f)原料、加入稳定剂、润滑剂、增塑剂{,以“塑”的Ҏ(gu)在制机内经挤压加工而成。由于它h质轻、耐腐蚀、外形美观、无不良气味、加工容易、施工方便等特点Q缺Ҏ(gu)强度较低Q耐热性差?/span> </p> <p> <br /> </p> <p> <span style="font-size:16px;font-family:SimSun;">在徏{工E中获得?jin)越来越q泛的应用。主要用作房屋徏{的自来水供水系l配、排水、排气和排污卫生、地下排水管pȝ、雨水管以及(qing)늺安装配套用的I线等?/span> </p> <p> <br /> </p> <p> <span style="font-size:16px;font-family:SimSun;">不锈钢管</span> </p> <p> <span style="font-size:16px;font-family:SimSun;">不锈钢管一U较用的管道材料,卫生健康Q由于内壁光滑,输送成本低。但其h(hun)D高,且施工工求比较高Q犹其其材质强度较硬Q现场加工非常困难。所以在装修工程中被选择的机率较低?/span> </p> <p> <br /> </p> <p> <span style="font-size:16px;font-family:SimSun;">ȝ钢管</span> </p> <p> <span style="font-size:16px;font-family:SimSun;">ȝ钢管p选用多种不同性质的树(wi)脂作为内衬防渗层Q与ȝU维增强层复合制成。优点:(x)保温、耐腐蚀、内壁光滑。缺点:(x)接口要求高,易漏_(d)不易施工Qh(hun)c(din)较适宜于地质腐蚀性强的大中型室外l水输送管道。连接方式:(x)普通夹砂玻璃钢道采用承插q接?/span> </p> <p> <br /> </p> <p> <span style="font-size:16px;font-family:SimSun;"><a href="http://bjjhd.cn/sng/" target="_blank">水惔?/a></span> </p> <p> <span style="font-size:16px;font-family:SimSun;"><a href="http://bjjhd.cn/supply/58.html" target="_blank">水惔道</a>又称水惔压力、钢{؜凝土,它可以作为城?jng)徏讑־Z下水道Q可以排污水Q防汛排_(d)以及(qing)一些特D厂矉K使用的上水管和农田机井。一般分为:(x)q_钢筋混凝土水泥管、柔性企口钢{؜凝土水惔、承插口钢筋混凝土水泥管、F型钢承口水惔、^口套环接口水泥管、企口水泥管{。水泥管h强度高、抗渗性好、安全流动性高、安装方ѝ绿色环保、抗外压能力强、顶q施工允?dng)R力大、生产效率高{优炏V?/span> </p> <p> <span style="font-size:16px;font-family:SimSun;">球墨铔R?/span> </p> <p> <span style="font-size:16px;font-family:SimSun;">球墨铔R是指?8号以上的铔R铁水经d球化剂后Q经q离?j)球墨铸铁机高速离?j)铸造成的管材,UCؓ(f)球管、球铁管和球墨铸等。主要用于自来水的输送,它具有铁的本质、钢的性能Q防腐性能优异、g展性能好,密封效果好,安装易?/span> </p> <p> <br /> </p> <p> <span style="font-size:16px;font-family:SimSun;">螺旋焊管</span> </p> <p> <span style="font-size:16px;font-family:SimSun;">螺旋焊管是将低碳素l构钢或低合金结构钢钢带按一定的螺旋U的角度h坯Q然后将缝焊接h制成Q它可以用较H的带钢生大直径的钢管。焊应保证水压试验、焊~的抗拉强度和冷弯性能要符合规定。同{压力条件下Q螺旋Ş焊缝所承受的应力比直缝,为直~焊的75%?0%Q因而能够承受较大的压力。与相同外径的直~焊相比较Q在承受同等压力的情况下Q壁厚可减小10%?5%?/span> </p> <p> <br /> </p> <p> <span style="font-size:16px;font-family:SimSun;">螺旋焊管寸_Q一般直径公差不过0Q?2%Q挠度小?/2000Q椭圆度于1%Q一般可以省d径和矫直工序。缺Ҏ(gu)׃使用成卷带钢为原料,有一定的月牙弯,且焊接点是在hҎ(gu)的带钢边缘区,因此不易对准焊炬Q媄(jing)响焊接质量。ؓ(f)此,要设|复杂的焊缝跟踪和质量检查设备?/span> </p> <p> <br /> </p> <p> <span style="font-size:16px;font-family:SimSun;">复合材质?/span> </p> <p> <span style="font-size:16px;font-family:SimSun;">复合材是以金属材为基 , 内衬塑、或外焊接聚乙烯、交联聚乙烯{非金属材料成型Q具有金属管材和非金属管材的优点。目前市(jng)普遍的有铝塑复合、铝合金衬塑复合、不锈钢衬塑复合、铜塑复合管、钢塑复合管、涂塑复合管、钢骨架PE等?/span> </p> <p style="text-align:center;"> <span style="font-size:16px;font-family:SimSun;"><img src="/uploads/image/20181129/20181129114841_6129.jpg" alt="排水? width="500" height="307" title="排水? align="" /><br /> 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