pe管材熱熔承插控制要點         當熱熔承插連接時，加熱溫度不能太高，過長，溫度應控制在210±10℃，否則會導致pe管材內擠出太多漿液，減小水的內徑；同時應注意控制管件的角度和方向以避免返工。加熱板加熱時，PE管材界面處理不干凈，或加熱板存在油污、沉淀物等雜質，造成界面泄漏；加熱時間應控制好，加熱時間短，管吸熱時間不夠，會導致焊接接頭卷曲過小，加熱時間過長，會導致焊接接頭卷曲過大，形成假焊。不同壁厚的pe管材如何接？    不同壁厚的管材（或管件）如果直接熱熔對接，由于熱板的加熱溫度相同，而管材與管材（或管材）熱熔區的截面積不一樣，而施加的熔接壓力相同，這樣會導致焊縫卷邊不一致，不能保證兩者之間的粘合效果，影響對接質量。 

PE管材熱熔連接標準規定        

pe管(guan)(guan)(guan)材、管(guan)(guan)(guan)件(jian)以(yi)及(ji)管(guan)(guan)(guan)道(dao)附件(jian)的(de)(de)(de)連(lian)(lian)(lian)(lian)(lian)接(jie)(jie)(jie)(jie)應(ying)采(cai)(cai)用(yong)(yong)(yong)熱(re)(re)熔(rong)(rong)連(lian)(lian)(lian)(lian)(lian)接(jie)(jie)(jie)(jie)（熱(re)(re)熔(rong)(rong)對接(jie)(jie)(jie)(jie)、熱(re)(re)熔(rong)(rong)承插(cha)連(lian)(lian)(lian)(lian)(lian)接(jie)(jie)(jie)(jie)、熱(re)(re)熔(rong)(rong)鞍形連(lian)(lian)(lian)(lian)(lian)接(jie)(jie)(jie)(jie)）或電(dian)熔(rong)(rong)連(lian)(lian)(lian)(lian)(lian)接(jie)(jie)(jie)(jie)（電(dian)熔(rong)(rong)承插(cha)連(lian)(lian)(lian)(lian)(lian)接(jie)(jie)(jie)(jie)、電(dian)熔(rong)(rong)鞍形連(lian)(lian)(lian)(lian)(lian)接(jie)(jie)(jie)(jie)）及(ji)機械連(lian)(lian)(lian)(lian)(lian)接(jie)(jie)(jie)(jie)（鎖(suo)緊型和非(fei)鎖(suo)緊型承插(cha)式連(lian)(lian)(lian)(lian)(lian)接(jie)(jie)(jie)(jie)、法蘭連(lian)(lian)(lian)(lian)(lian)接(jie)(jie)(jie)(jie)、鋼(gang)塑過(guo)度連(lian)(lian)(lian)(lian)(lian)接(jie)(jie)(jie)(jie)）。公稱外徑大于或等于63mm的(de)(de)(de)管(guan)(guan)(guan)道(dao)不宜采(cai)(cai)用(yong)(yong)(yong)手工(gong)熱(re)(re)熔(rong)(rong)承插(cha)連(lian)(lian)(lian)(lian)(lian)接(jie)(jie)(jie)(jie)，壁(bi)厚<6mm的(de)(de)(de)管(guan)(guan)(guan)材不宜使用(yong)(yong)(yong)熱(re)(re)熔(rong)(rong)對接(jie)(jie)(jie)(jie)的(de)(de)(de)連(lian)(lian)(lian)(lian)(lian)接(jie)(jie)(jie)(jie)方法，聚(ju)乙烯管(guan)(guan)(guan)材、管(guan)(guan)(guan)件(jian)不得(de)采(cai)(cai)用(yong)(yong)(yong)螺紋(wen)連(lian)(lian)(lian)(lian)(lian)接(jie)(jie)(jie)(jie)和粘接(jie)(jie)(jie)(jie)。管(guan)(guan)(guan)道(dao)各種連(lian)(lian)(lian)(lian)(lian)接(jie)(jie)(jie)(jie)應(ying)采(cai)(cai)用(yong)(yong)(yong)相應(ying)的(de)(de)(de)專用(yong)(yong)(yong)連(lian)(lian)(lian)(lian)(lian)接(jie)(jie)(jie)(jie)工(gong)具(ju)。連(lian)(lian)(lian)(lian)(lian)接(jie)(jie)(jie)(jie)時嚴(yan)禁明火加熱(re)(re)。管(guan)(guan)(guan)道(dao)連(lian)(lian)(lian)(lian)(lian)接(jie)(jie)(jie)(jie)宜應(ying)采(cai)(cai)用(yong)(yong)(yong)同(tong)種牌號級別，壓力等級相同(tong)的(de)(de)(de)管(guan)(guan)(guan)材、管(guan)(guan)(guan)件(jian)以(yi)及(ji)管(guan)(guan)(guan)道(dao)附件(jian)（不同(tong)牌號的(de)(de)(de)管(guan)(guan)(guan)材以(yi)及(ji)管(guan)(guan)(guan)道(dao)附件(jian)之間的(de)(de)(de)連(lian)(lian)(lian)(lian)(lian)接(jie)(jie)(jie)(jie)，應(ying)經(jing)過(guo)試驗(yan)，判(pan)定(ding)連(lian)(lian)(lian)(lian)(lian)接(jie)(jie)(jie)(jie)質量能得(de)到保證后，方可連(lian)(lian)(lian)(lian)(lian)接(jie)(jie)(jie)(jie)）。       

pe管(guan)(guan)材、管(guan)(guan)件(jian)與(yu)金(jin)屬管(guan)(guan)、管(guan)(guan)道(dao)附件(jian)的(de)(de)連(lian)(lian)接(jie)，當采(cai)用鋼制(zhi)噴塑或(huo)球墨鑄鐵過度(du)(du)管(guan)(guan)件(jian)時(shi)，其過度(du)(du)管(guan)(guan)件(jian)的(de)(de)壓力(li)(li)等級不得低于管(guan)(guan)材公稱壓力(li)(li)。在(zai)寒冷氣候（-5℃以下）或(huo)大風環(huan)境條件(jian)下進行熱熔或(huo)電熔連(lian)(lian)接(jie)操作時(shi)，應(ying)(ying)(ying)(ying)采(cai)取保護(hu)措施，或(huo)調(diao)整(zheng)連(lian)(lian)接(jie)機(ji)具(ju)的(de)(de)工(gong)藝(yi)參數。管(guan)(guan)道(dao)連(lian)(lian)接(jie)時(shi)，管(guan)(guan)材切割(ge)應(ying)(ying)(ying)(ying)采(cai)用專用割(ge)刀或(huo)切管(guan)(guan)工(gong)具(ju)，切割(ge)斷面應(ying)(ying)(ying)(ying)平整(zheng)、光滑、無毛(mao)刺，且應(ying)(ying)(ying)(ying)垂直(zhi)于管(guan)(guan)軸線。聚(ju)乙烯（PE）給水(shui)管(guan)(guan)道(dao)熱熔對接(jie)應(ying)(ying)(ying)(ying)采(cai)用同(tong)(tong)廠家、同(tong)(tong)材質(zhi)、同(tong)(tong)牌號的(de)(de)管(guan)(guan)材與(yu)管(guan)(guan)材，管(guan)(guan)材與(yu)管(guan)(guan)件(jian)之間，管(guan)(guan)件(jian)與(yu)管(guan)(guan)件(jian)之間連(lian)(lian)接(jie)；不同(tong)(tong)SDR系列的(de)(de)聚(ju)乙烯管(guan)(guan)材不宜采(cai)用熱熔對接(jie)連(lian)(lian)接(jie)，不同(tong)(tong)SDR系列的(de)(de)管(guan)(guan)材、管(guan)(guan)件(jian)產品(pin)互焊時(shi)，宜通過機(ji)械(xie)加工(gong)使焊接(jie)處壁厚相同(tong)(tong)。加熱完畢(bi)，待(dai)連(lian)(lian)接(jie)件(jian)應(ying)(ying)(ying)(ying)迅速脫離加熱工(gong)具(ju)，檢查待(dai)連(lian)(lian)接(jie)件(jian)的(de)(de)加熱面熔化的(de)(de)均勻(yun)性和(he)是否有(you)損傷。然后(hou)，用均勻(yun)外力(li)(li)使連(lian)(lian)接(jie)面完全(quan)接(jie)觸，并翻邊形成均勻(yun)一致的(de)(de)凸緣，凸緣的(de)(de)高度(du)(du)和(he)寬度(du)(du)應(ying)(ying)(ying)(ying)符合有(you)關規定。