Tisanalowe mu mfundoyi, choyamba tiyeni tidziwe chomwe chinthu chilichonse chimapangidwa. PPR ndi chidule cha polypropylene random copolymer, pomwe CPVC ndi chlorinated polyvinyl chloride yomwe imapangidwa kudzera mu njira ya chlorination kukhala polyvinyl chloride.
PPR ndiye njira yogwiritsira ntchito mapaipi yomwe imagwiritsidwa ntchito kwambiri ku Europe, Russia, South America, Africa, South Asia, China ndi Middle East, pomwe PPR ndiye njira yogwiritsira ntchito mapaipi yomwe imagwiritsidwa ntchito kwambiri ku Europe, Russia, South America, Africa, South Asia, China ndi Middle East.CPVCimagwiritsidwa ntchito kwambiri ku India ndi Mexico. PPR ndi yabwino kuposa CPVC osati chifukwa chakuti imalandiridwa ndi anthu ambiri, ndipo ndi yotetezeka kumwa madzi.
Tsopano, tiyeni tikuthandizeni kupanga chisankho chotetezeka, kumvetsetsa chifukwa chake mapaipi a CPVC ndi osatetezeka komanso chifukwa chake muyenera kusankhaMapaipi a PPR.

Pulasitiki ya chakudya chapamwamba:
Mapaipi a PPR alibe zinthu zochokera ku chlorine ndipo ndi otetezeka ku thupi la munthu, pomwe kapangidwe ka mapaipi a CPVC kali ndi chlorine, yomwe imatha kulekanitsidwa ndikusungunuka m'madzi ngati vinyl chloride ndikuwunjikana m'thupi la munthu.
Nthawi zina, mapaipi a CPVC amatuluka madzi chifukwa amakhala ndi mphamvu yofooka ndipo amafunika mankhwala osungunulira, pomwe mapaipi a PPR amalumikizidwa pamodzi ndi kutentha ndipo amaletsa mapaipi okhuthala komanso olimba. Mphamvu zophatikizanazi zimapangitsa kuti pakhale kutayikira kwamtundu uliwonse. United States yachita kafukufuku wambiri pa kutayikira kwa zinthu zoopsa monga chloroform, tetrahydrofuran ndi acetate m'madzi akumwa kudzera muMapaipi a CPVC.

Zosungunulira zomwe zimagwiritsidwa ntchito mu CPVC zimaika thanzi lanu pachiwopsezo:

Bungwe la California Pipeline Trade Commission lili ndi udindo wowunikanso zotsatira za mapaipi pa thanzi ndipo ndi bungwe lopereka satifiketi ya mapaipi ku California, USA. Nthawi zonse lakhala likulimbikitsa kwambiri zotsatira zoopsa za zosungunulira zomwe zimagwiritsidwa ntchito polumikiza mapaipi a CPVC. Zapezeka kuti zosungunulirazo zili ndi zinthu zomwe zimayambitsa khansa m'zinyama ndipo zimaonedwa kuti ndi zovulaza anthu. Kumbali inayi, mapaipi a PPR safuna zosungunulira zilizonse ndipo amalumikizidwa ndi ukadaulo wosungunuka ndi kutentha, kotero alibe mankhwala oopsa.

Njira ya PPR ndiyo yankho labwino:
Mapaipi a KPT PPR amapangidwa ndi zinthu zopangira zapamwamba kwambiri, zoyenerera chakudya, zosinthasintha, zolimba, ndipo zimatha kupirira kutentha kwa -10°C mpaka 95°C. Mapaipi a KPT PPR amakhala ndi moyo wautali kwambiri, womwe ungagwiritsidwe ntchito kwa zaka zoposa 50.