給水PE管(guan)(guan)(guan)道施工安裝(1)管(guan)(guan)(guan)節安裝前(qian)應進行(xing)外觀質量檢(jian)(jian)查,管(guan)(guan)(guan)件(jian)管(guan)(guan)(guan)材(cai)內(nei)外壁應平(ping)整(zheng)、光滑無裂紋、氣(qi)泡、脫皮,無嚴重的冷(leng)斑和(he)明顯的痕紋、凹陷,管(guan)(guan)(guan)材(cai)軸(zhou)向不得(de)有扭曲性的彎曲,其直(zhi)線度偏差應小于1%,管(guan)(guan)(guan)材(cai)端口必須平(ping)整(zheng)并(bing)垂直(zhi)于軸(zhou)線。應符合現行(xing)國家(jia)產(chan)品標準(zhun)的規(gui)定(ding),并(bing)經鑒定(ding)合格后(hou),方可(ke)使用。(2)檢(jian)(jian)查溝底合格后(hou)做10cm的砂墊(dian)層...
一、室內給(gei)(gei)水(shui)(shui)(shui)管(guan)(guan)道系(xi)統:1、室內給(gei)(gei)水(shui)(shui)(shui)管(guan)(guan)道的水(shui)(shui)(shui)壓(ya)連路由必(bi)(bi)(bi)須符合設于(yu)十要求。當設計未注明時,各種材質的給(gei)(gei)水(shui)(shui)(shui)管(guan)(guan)道系(xi)統試(shi)驗壓(ya)力(li)均為工作壓(ya)力(li)的1.5倍,但不得小于(yu)0.6MPa。2、給(gei)(gei)水(shui)(shui)(shui)系(xi)統交付使用前(qian)(qian)必(bi)(bi)(bi)須進行通水(shui)(shui)(shui)試(shi)驗并做好記錄。3、生(sheng)活(huo)給(gei)(gei)水(shui)(shui)(shui)系(xi)統管(guan)(guan)道在(zai)交付使用前(qian)(qian)必(bi)(bi)(bi)須沖洗和消毒(du),并經有關(guan)部門取樣檢(jian)查,符合國家《生(sheng)活(huo)飲用水(shui)(shui)(shui)標準》...
項 目PE實(shi)壁管(guan)PVC-U管(guan)承 壓(ya) 能 力在現有(you)技術水平(ping)和(he)國(guo)家標準中(zhong),采用標準尺寸(cun)比SDR為(wei)(wei)11的PE管(guan)最(zui)大公(gong)稱(cheng)壓(ya)力可(ke)達16 kg/cm2。國(guo)際(ji)標準中(zhong),當公(gong)稱(cheng)外徑大于90mm時,標準尺寸(cun)比為(wei)(wei)11的PVC-U管(guan)最(zui)大公(gong)稱(cheng)壓(ya)力為(wei)(wei)25 kg/cm2。原料成(cheng)分 及產品外觀PE管(guan)是(shi)由100%單一純原料粒料(即使在加入碳黑及抗(kang)氧化劑時,也是(shi)由原料中(zhong)聚(ju)合而成(cheng))經擠壓(ya)加...
給水(shui)管(guan)網的(de)(de)(de)基建(jian)投資大(da)約占(zhan)給水(shui)工(gong)(gong)程(cheng)總投資的(de)(de)(de)2/3。因(yin)此,正確地選用(yong)管(guan)道(dao)(dao)材(cai)料,對確保(bao)滿足管(guan)網工(gong)(gong)況(工(gong)(gong)作壓力、流量、流速等)的(de)(de)(de)要求(qiu),保(bao)證供(gong)水(shui)水(shui)質,同時(shi)降低工(gong)(gong)程(cheng)造價便于管(guan)道(dao)(dao)施工(gong)(gong),都具有十分重要的(de)(de)(de)意義。近年(nian)來PVC-U管(guan)在(zai)(zai)給水(shui)工(gong)(gong)程(cheng)中(zhong)(zhong)的(de)(de)(de)應用(yong)越來越廣泛,現(xian)根(gen)據我們在(zai)(zai)工(gong)(gong)程(cheng)中(zhong)(zhong)的(de)(de)(de)應用(yong)情況談(tan)談(tan)在(zai)(zai)管(guan)道(dao)(dao)施工(gong)(gong)和維護中(zhong)(zhong)應注意的(de)(de)(de)一些問題,希...
1、熱(re)熔(rong)承(cheng)插安(an)(an)裝,DN20-DN63mm規格一般采用此法,具體流程(cheng)如下:(1)用管(guan)剪根據安(an)(an)裝需(xu)要將管(guan)材(cai)剪斷;(2)在管(guan)材(cai)待承(cheng)插深度(du)處標記號;(3)將熱(re)熔(rong)機(ji)模頭加溫至(zhi)20左右(you);(4)同時加熱(re)管(guan)材(cai)、管(guan)件,然后(hou)承(cheng)插(承(cheng)插到位后(hou)待片(pian)刻松手,在加熱(re)、承(cheng)插、冷(leng)卻過(guo)程(cheng)中禁止扭動;(5)自(zi)然冷(leng)卻;(6)施工完畢經(jing)試驗壓(ya)驗收合格后(hou)投入使(shi)...
近年來, 我國(guo)一直十(shi)分重視(shi)新型(xing)(xing)管(guan)(guan)材的開發和應用(yong), 禁止或(huo)限(xian)制(zhi)某些金屬管(guan)(guan)材的使(shi)(shi)用(yong), 新型(xing)(xing)管(guan)(guan)材的應用(yong)越來越廣。在推廣使(shi)(shi)用(yong)的管(guan)(guan)材中(zhong), 主(zhu)要(yao)為各(ge)(ge)種(zhong)塑(su)料(liao)(liao)管(guan)(guan)材。但(dan)由于(yu)有些新型(xing)(xing)管(guan)(guan)材暫無設計及(ji)施工驗收的國(guo)家規(gui)范, 使(shi)(shi)用(yong)中(zhong)容易出(chu)現各(ge)(ge)種(zhong)問題(ti), 根據在施工監理中(zhong)的體(ti)會(hui), 總(zong)結給水塑(su)料(liao)(liao)PE管(guan)(guan)在施工監理中(zhong)應注(zhu)意以下幾個問題(ti)。 1.給水塑(su)料(liao)(liao)管(guan)(guan)的...
一、PVC-U給(gei)水管道(dao)的(de)基本常識PVC-U管道(dao)是以衛(wei)生級聚氯(lv)乙烯(PVC)樹脂為主要原料,加入適量的(de)穩(wen)定劑、潤滑劑、填充(chong)劑、增色劑等經塑料擠出機(ji)擠出成(cheng)(cheng)型(xing)和注(zhu)塑機(ji)注(zhu)塑成(cheng)(cheng)型(xing),通過(guo)冷卻(que)、固化、定型(xing)、檢驗、包裝(zhuang)等工序以完成(cheng)(cheng)管材、管件的(de)生產。PVC-U管道(dao)和傳統(tong)的(de)管道(dao)相比(bi),具有重量輕、耐腐蝕、水流阻力小、節約能源、安(an)裝(zhuang)迅捷、造價(jia)...
聚(ju)(ju)(ju)乙烯(xi)管(guan)(guan)PE管(guan)(guan)材的(de)(de)(de)優勢五十余年來,隨著(zhu)PE管(guan)(guan)材聚(ju)(ju)(ju)乙烯(xi)管(guan)(guan)的(de)(de)(de)專用樹脂的(de)(de)(de)開(kai)發,聚(ju)(ju)(ju)乙烯(xi)管(guan)(guan)道(dao)系(xi)(xi)統(tong)與傳統(tong)的(de)(de)(de)管(guan)(guan)道(dao)系(xi)(xi)統(tong)相比有(you)較(jiao)大優勢,主要(yao)有(you):1、耐腐蝕(shi)。聚(ju)(ju)(ju)乙烯(xi)分子(zi)鏈(lian)中不存在烴基意外的(de)(de)(de)其他(ta)官能(neng)團(tuan),因為(wei)具有(you)良好的(de)(de)(de)耐腐蝕(shi)性(xing)能(neng),不受土壤和輸送(song)流體(ti)中酸、堿腐蝕(shi)。它的(de)(de)(de)優良的(de)(de)(de)防腐蝕(shi)性(xing)能(neng)還可以作為(wei)金屬管(guan)(guan)道(dao)的(de)(de)(de)防腐層。2、熔(rong)融(rong)焊接(jie)性(xing)好。聚(ju)(ju)(ju)...
塑(su)料(liao)管材的(de)應用(yong)分類和(he)發展方向(xiang)常用(yong)于供水(shui)管網中的(de)塑(su)料(liao)管道可分為兩類。一類是聚(ju)(ju)(ju)烯(xi)(xi)烴(jing)材料(liao):聚(ju)(ju)(ju)乙烯(xi)(xi)(PE)、高密聚(ju)(ju)(ju)乙烯(xi)(xi)(HDPE)、聚(ju)(ju)(ju)丙烯(xi)(xi)(PP)、聚(ju)(ju)(ju)丁(ding)烯(xi)(xi)(PB),這(zhe)類塑(su)料(liao)管道適(shi)用(yong)于熔(rong)合(he)(加(jia)熱)連(lian)接。另一類是氯(lv)(lv)乙烯(xi)(xi)材料(liao):聚(ju)(ju)(ju)氯(lv)(lv)乙烯(xi)(xi)(PVC),硬質聚(ju)(ju)(ju)氯(lv)(lv)乙烯(xi)(xi)(U—PVC)、過氯(lv)(lv)化聚(ju)(ju)(ju)氯(lv)(lv)乙烯(xi)(xi)(C—PVC)。適(shi)用(yong)于粘接(膠水(shui))連(lian)接。PVC管和(he)PE管道在60年代(dai),同...
PVC管材(cai)生(sheng)產線工(gong)藝流(liu)程(cheng)1、PVC管材(cai)生(sheng)產線的工(gong)藝流(liu)程(cheng)生(sheng)產流(liu)程(cheng)原料(liao)+助劑配制→混合→輸送(song)上料(liao)→強制喂料(liao)→錐型雙螺桿擠出機(ji)→擠出模(mo)具→定(ding)徑套→噴淋真(zhen)空定(ding)型箱→浸泡冷卻(que)水箱→油墨印(yin)字(zi)機(ji)→履帶(dai)牽(qian)引機(ji)→抬(tai)刀切割機(ji)→管材(cai)堆放(fang)架→成品檢測包裝二、PVC管材(cai)生(sheng)產線設備功(gong)能(1)、原料(liao)混合:是將PVC穩定(ding)劑、增塑劑、抗氧(yang)化劑等其它...