一、pe管是什么管材
pe管是(shi)乙(yi)烯(xi)經(jing)聚(ju)合制得的一種熱塑性樹(shu)脂,中(zhong)(zhong)文名稱(cheng)聚(ju)乙(yi)烯(xi)。pe無臭(chou)無毒,手感(gan)似蠟,具有優良(liang)的耐低溫性能,而(er)且其化學(xue)穩定性好(hao),可以(yi)耐大多數(shu)酸堿的侵蝕。pe管的使用領域廣(guang)泛,其中(zhong)(zhong)給(gei)水管和燃(ran)氣管是(shi)其兩個最大的應用市(shi)場(chang)。
根據(ju)溫度(du)等聚(ju)合反應條件不(bu)同,可(ke)得出不(bu)同密(mi)度(du)的樹脂(zhi),因而又有高(gao)密(mi)度(du)聚(ju)乙(yi)(yi)烯(xi)、中密(mi)度(du)聚(ju)乙(yi)(yi)烯(xi)和(he)低密(mi)度(du)聚(ju)乙(yi)(yi)烯(xi)之(zhi)分。
二、pe管的性能特點
1、良好的衛生性能:品牌PE管加(jia)工時不添加(jia)重金(jin)屬鹽穩(wen)定(ding)劑,材質無毒性,無結垢層,不滋生細菌(jun),很(hen)好地(di)解(jie)決了城(cheng)市飲用(yong)水的二次污染。
2、卓越(yue)的耐腐(fu)蝕性(xing)能:除(chu)少數(shu)強氧(yang)化劑外,可耐多種化學(xue)介質的侵(qin)蝕;無電化學(xue)腐(fu)蝕。
3、長久的使用壽命(ming):在(zai)額定溫度、壓力狀況下,PE管道可安全使用50年(nian)以上。
4、較好(hao)的耐沖(chong)擊性:PE管韌性好(hao),耐沖(chong)擊強度高,重物直接壓(ya)過管道,不會(hui)導致管道破裂(lie)。
5、可靠(kao)的(de)連(lian)接(jie)性(xing)能:PE管熱熔或(huo)(huo)電熔接(jie)口的(de)強度高于管材本體,接(jie)縫不(bu)會由(you)于土壤移動或(huo)(huo)活載荷的(de)作用斷開。
6、良好的施工(gong)(gong)性(xing)能:管道質輕,焊接工(gong)(gong)藝(yi)簡單,施工(gong)(gong)方便,工(gong)(gong)程綜合造價低。
三、pe管的型號和規格
PE管從壓(ya)力等(deng)級主要分(fen)為0.6Mpa,0.8Mpa,1.0Mpa,1.25Mpa,1.6Mpa。Mpa是壓(ya)力單位,0.1Mpa等(deng)于(yu)一公斤。根據(ju)PE管的口徑(jing)來(lai)分(fen)大體可以分(fen)為20,25,32,40,50,63,75,90,110,125,160,180,200,225,250,280,315,355,400,450,500,560,630,710,800,900,1000,1200,單位為毫米,PE管口徑(jing)指外徑(jing),對應壓(ya)力等(deng)級的不(bu)同(tong),管材的壁(bi)厚不(bu)同(tong)。
四、PE給水管連接方式
1、熱熔連接
熱(re)熔(rong)連(lian)(lian)接(jie)(jie)是(shi)用專(zhuan)用加(jia)(jia)熱(re)工(gong)具(ju),在(zai)壓力(li)下加(jia)(jia)熱(re)聚乙烯管材或管件(jian)的待連(lian)(lian)接(jie)(jie)部位(wei),使其熔(rong)融后,移(yi)走加(jia)(jia)熱(re)工(gong)具(ju),施壓將兩(liang)個(ge)熔(rong)融面連(lian)(lian)在(zai)一起,在(zai)穩(wen)定的壓力(li)下保持一段時(shi)間,直到接(jie)(jie)頭冷卻。熱(re)熔(rong)連(lian)(lian)接(jie)(jie)包括熱(re)熔(rong)對接(jie)(jie)連(lian)(lian)接(jie)(jie)、熱(re)熔(rong)承(cheng)插(cha)連(lian)(lian)接(jie)(jie)、熱(re)熔(rong)鞍型連(lian)(lian)接(jie)(jie)。
2、電熔連接
電(dian)(dian)(dian)(dian)熔(rong)(rong)(rong)連(lian)(lian)接(jie)(jie)是(shi)用內埋電(dian)(dian)(dian)(dian)阻(zu)絲的專(zhuan)用電(dian)(dian)(dian)(dian)熔(rong)(rong)(rong)管(guan)件與(yu)管(guan)材(cai)或管(guan)件的連(lian)(lian)接(jie)(jie)部位緊(jin)密接(jie)(jie)觸通(tong)電(dian)(dian)(dian)(dian),通(tong)過內埋的電(dian)(dian)(dian)(dian)阻(zu)絲加熱連(lian)(lian)接(jie)(jie)部位,使其熔(rong)(rong)(rong)融連(lian)(lian)為一體,直至接(jie)(jie)頭冷卻。電(dian)(dian)(dian)(dian)熔(rong)(rong)(rong)連(lian)(lian)接(jie)(jie)可(ke)用于與(yu)不同類型(xing)和不同熔(rong)(rong)(rong)體流(liu)動速率的聚乙烯管(guan)材(cai)或插(cha)口管(guan)件連(lian)(lian)接(jie)(jie)。電(dian)(dian)(dian)(dian)熔(rong)(rong)(rong)連(lian)(lian)接(jie)(jie)分為電(dian)(dian)(dian)(dian)熔(rong)(rong)(rong)承(cheng)插(cha)連(lian)(lian)接(jie)(jie)和電(dian)(dian)(dian)(dian)熔(rong)(rong)(rong)鞍型(xing)連(lian)(lian)接(jie)(jie)。
3、承插式柔性連接
聚乙烯管(guan)(guan)(guan)道(dao)承(cheng)(cheng)插(cha)式(shi)柔性連(lian)接是(shi)參(can)照鑄鐵管(guan)(guan)(guan)和聚氯乙烯管(guan)(guan)(guan)(PVC U)的(de)(de)(de)(de)承(cheng)(cheng)插(cha)式(shi)柔性連(lian)接原理(li)開發的(de)(de)(de)(de)一(yi)種新型連(lian)接方式(shi),它是(shi)在聚乙烯管(guan)(guan)(guan)材一(yi)端(duan)焊接一(yi)個經過加固的(de)(de)(de)(de)聚乙烯承(cheng)(cheng)口。承(cheng)(cheng)插(cha)式(shi)柔性連(lian)接是(shi)將聚乙烯管(guan)(guan)(guan)材一(yi)端(duan)直接插(cha)入管(guan)(guan)(guan)材或管(guan)(guan)(guan)件(jian)的(de)(de)(de)(de)特制的(de)(de)(de)(de)承(cheng)(cheng)口中,通過承(cheng)(cheng)口內的(de)(de)(de)(de)鎖緊環壓緊抗拉(la)拔(ba)、橡膠密封圈(quan)壓緊密封,達(da)到連(lian)接管(guan)(guan)(guan)材和管(guan)(guan)(guan)件(jian)的(de)(de)(de)(de)目的(de)(de)(de)(de)。
4、法蘭連接
法蘭(lan)連接(jie)(jie)(jie)主(zhu)要用于(yu)聚(ju)乙(yi)(yi)烯管道與金(jin)屬管道或閥門、流量計、壓力表等(deng)附(fu)屬設(she)備的(de)連接(jie)(jie)(jie)。法蘭(lan)連接(jie)(jie)(jie)主(zhu)要由聚(ju)乙(yi)(yi)烯法蘭(lan)連接(jie)(jie)(jie)件、鋼(gang)(gang)制(zhi)或鋁(lv)制(zhi)背(bei)壓活套法蘭(lan)、鋼(gang)(gang)制(zhi)或鋁(lv)制(zhi)法蘭(lan)片、墊片或密封圈、螺(luo)栓、螺(luo)母等(deng)組成(cheng)。法蘭(lan)連接(jie)(jie)(jie)是(shi)通(tong)過(guo)緊固螺(luo)栓、螺(luo)母,使(shi)法蘭(lan)連接(jie)(jie)(jie)件與法蘭(lan)片緊密接(jie)(jie)(jie)觸(chu),達(da)到連接(jie)(jie)(jie)目的(de)。
5、鋼塑過渡接頭連接
鋼(gang)塑過渡(du)(du)接(jie)頭連(lian)接(jie)是采(cai)用(yong)通過冷壓或其它(ta)方式(shi)預制的鋼(gang)塑過渡(du)(du)接(jie)頭來連(lian)接(jie)聚乙烯管道(dao)和(he)金屬管道(dao)。鋼(gang)塑過渡(du)(du)接(jie)頭內有抗拉拔的鎖(suo)緊環和(he)密(mi)封圈,通常要(yao)求其有良好的密(mi)封性(xing)能和(he)抗拉拔、耐(nai)壓性(xing)能要(yao)大于(yu)系統(tong)中(zhong)聚乙烯管道(dao)。