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亞洲婷婷國產精品電影人久久:湖南PPH管的崛起告(gao)訴我們它會在各行(xing)各業繼續(xu)發(fa)光發(fa)亮(liang)

我國(guo)PPH管(guan)(guan)道(dao)系(xi)(xi)(xi)統(tong)(tong)起步于(yu)十(shi)20世(shi)紀(ji)50年(nian)代(dai)，但是在(zai)改革開(kai)放前一直(zhi)和國(guo)際上(shang)有很(hen)大差距(ju)。80年(nian)代(dai)以后(hou)開(kai)始引進國(guo)外先進技術(shu)，逐步建(jian)立(li)起PVC-U管(guan)(guan)道(dao)系(xi)(xi)(xi)統(tong)(tong)的完整體系(xi)(xi)(xi)。在(zai)各個(ge)塑料管(guan)(guan)道(dao)系(xi)(xi)(xi)統(tong)(tong)中(zhong)PPH管(guan)(guan)道(dao)系(xi)(xi)(xi)統(tong)(tong)是很(hen)早(zao)形成規模生產和大量應用(yong)的。

現在的PPH管(guan)已被廣泛使用，而它在施(shi)工監(jian)理(li)中也(ye)應注意以下(xia)幾個問(wen)題: 

1. PPH管(guan)的(de)選用(yong):PPH管(guan)(均聚聚丙烯管(guan))，其原材(cai)料經(jing)過(guo)β改性(xing)(xing)，具有均勻細膩的(de)Beta晶(jing)型結構(gou)，具有極高的(de)化學穩定性(xing)(xing)和耐高溫性(xing)(xing)，廣泛應用(yong)于(yu)鋼廠（酸(suan)洗、酸(suan)再生、酸(suan)霧）、煙氣(qi)脫硫、工藝冷(leng)卻(que)水和化工行業的(de)耐腐蝕性(xing)(xing)介質輸(shu)送。

2.施(shi)(shi)工(gong)過程的(de)監(jian)理(li)(li):由于PPH管(guan)還處于推廣階段,施(shi)(shi)工(gong)人(ren)員(yuan)(yuan)對施(shi)(shi)工(gong)工(gong)藝掌握不到位(wei),且這新型(xing)管(guan)材對施(shi)(shi)工(gong)人(ren)員(yuan)(yuan)技術水平要求高,施(shi)(shi)工(gong)難度(du)較大。因此,對施(shi)(shi)工(gong)人(ren)員(yuan)(yuan)的(de)崗(gang)前培訓就顯得尤為重要。監(jian)理(li)(li)在現場檢(jian)查中尤其要重視管(guan)道連接, 

PPH管(guan)(guan)(guan)易發生滲(shen)漏、爆管(guan)(guan)(guan)的地方(fang)(fang)就(jiu)是管(guan)(guan)(guan)道連(lian)接(jie)(jie)(jie)處。PPH管(guan)(guan)(guan)的連(lian)接(jie)(jie)(jie)方(fang)(fang)式主(zhu)要(yao)有熱熔(rong)連(lian)接(jie)(jie)(jie)及(ji)法蘭(lan)連(lian)接(jie)(jie)(jie)。現分(fen)別(bie)就(jiu)注意事項(xiang)簡述(shu)如下:應(ying)使(shi)用廠家提供的專用熔(rong)接(jie)(jie)(jie)工具,連(lian)接(jie)(jie)(jie)前(qian),應(ying)清潔管(guan)(guan)(guan)子(zi)接(jie)(jie)(jie)口位置(zhi)和(he)管(guan)(guan)(guan)件(jian),保(bao)證其(qi)清潔、干(gan)燥(zao)、無油,在管(guan)(guan)(guan)子(zi)和(he)管(guan)(guan)(guan)件(jian)上做出標記,熔(rong)合溫度要(yao)定期(qi)檢(jian)查,確保(bao)在正確值,熔(rong)合時應(ying)防止管(guan)(guan)(guan)件(jian)和(he)管(guan)(guan)(guan)子(zi)向外滑(hua)動,加熱后嚴禁轉動,嚴格(ge)遵守保(bao)持時間和(he)冷卻時間。PPH管(guan)(guan)(guan)試壓應(ying)嚴格(ge)按規(gui)范要(yao)求(qiu),只有這(zhe)樣才能保(bao)證系統正常可靠地運(yun)行。

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