有的人在選購PE管材deshihouhuifaxianguancaibiaomianyouyixiemadian
，congerdanxinyoumadiandeguancaishibushizhiliangbuxing
，suoyixiamianxiaobianjiulaigeidajiajiangjiangweishenmeyoudeguancaibiaomianhuiyoumadian，yijizhezhongmadianhuibuhuiyingxiangguancaizhiliang。

　　1、有可能是因為設備機頭、機筒當中的原料因為經過長時間加熱出現氧化變質的情況，這樣在基礎的時候PEguancaishihuixingchengyixiebijiaodademadianhuozheshiaodongde。youqishizaiyixiebuhegedeguandaoshengchandangzhongtianjialehuiyongliaochuxiandezheyizhongxianxiangshihuigengmingxiande，namezaichuxianzheyizhongqingkuangdeshihoushixuyaogenghaodekongzhiyixiajiagongshihoudewenduhaiyouliaozizaijitongzhongdeshijianyeshixuyaokongzhihaode，zaijingguokuaisudejiangwenhuozhedingqidejinxingqingliqigaishanxiaoguoyeshibijiaomingxiande。

　　2
、還hai有you就jiu是shi當dang料liao當dang中zhong的de水shui分fen含han量liang比bi較jiao高gao的de時shi候hou在zai管guan材cai的de表biao麵mian也ye是shi比bi較jiao容rong易yi出chu現xian一yi些xie氣qi泡pao的de。那na麼me等deng到dao在zai定ding型xing之zhi後hou是shi會hui在zai表biao麵mian形xing成cheng一yi些xie麻ma點dian的de
，那na麼me就jiu需xu要yao我wo們men需xu要yao對dui原yuan料liao進jin行xing烘hong幹gan處chu理li從cong而er降jiang低di當dang中zhong的de水shui分fen含han量liang。

　　3、設備定型套當中的冷卻水量不均勻的時候也是會導致管材的de表biao麵mian出chu現xian一yi些xie麻ma點dian。出chu現xian這zhe一yi種zhong情qing況kuang的de主zhu要yao原yuan因yin就jiu是shi隨sui著zhe著zhe管guan材cai口kou徑jing增zeng加jia，再zai冷leng卻que的de時shi候hou所suo需xu要yao的de水shui量liang也ye是shi越yue大da的de，這zhe樣yang在zai形xing成cheng一yi個ge完wan整zheng水shui膜mo的de時shi候hou是shi會hui比bi較jiao困kun難nan的de。所suo以yi當dang我wo們men再zai遇yu見jian這zhe一yi種zhong情qing況kuang的de時shi候hou是shi需xu要yao適shi當dang的de對dui進jin水shui管guan的de水shui流liu量liang還hai有you流liu道dao孔kong隙xi進jin行xing調tiao整zheng的de，適shi當dang的de增zeng加jia一yi下xia水shui流liu量liang並bing且qie確que保bao冷leng卻que水shui均jun勻yun成cheng膜mo可ke以yi解jie決jue問wen題ti。