Ngaphambi kokufaka imininingwane, ake siqale sithole ukuthi impahla ngayinye yenziwe ngani. I-PPR isifinyezo se-polypropylene random copolymer, kuyilapho i-CPVC iyi-chlorine ye-polyvinyl chloride ekhiqizwa ngenqubo yokufaka i-chlorination ku-polyvinyl chloride.
I-PPR iwuhlelo lwamapayipi olusetshenziswa kakhulu eYurophu, eRussia, eNingizimu Melika, e-Afrika, eNingizimu Asia, eChina naseMpumalanga Ephakathi, kuyilaphoI-CPVCisetshenziswa kakhulu eNdiya naseMexico. I-PPR ingcono kune-CPVC hhayi ngenxa yokwamukelwa kwayo kabanzi, futhi iphephile emanzini okuphuza.
Manje, ake sikusize wenze isinqumo esiphephile, uqonde ukuthi kungani amapayipi e-CPVC engaphephile nokuthi kungani kufanele ukhethePPR amapayipi.

Ipulasitiki yebanga lokudla:
Amapayipi e-PPR awaqukethe okuphuma ku-chlorine futhi aphephile emzimbeni womuntu, kuyilapho isakhiwo sepayipi le-CPVC siqukethe i-chlorine, engahlukaniswa futhi incibilike emanzini ngendlela ye-vinyl chloride futhi iqoqwe emzimbeni womuntu.
Kwezinye izimo, i-leaching itholakale endabeni yamapayipi e-CPVC ngoba anokuqina okuqinile futhi adinga ama-solvents amakhemikhali, kuyilapho amapayipi e-PPR ehlanganiswa ndawonye ngokuhlanganisa ukushisa futhi avimbele amapayipi amakhulu kanye nokunamathela okuqinile. Amandla ahlangene aholela kunoma yiluphi uhlobo lokuvuza. I-United States yenze izifundo eziningi mayelana nokucwiliswa kwezinto eziyingozi njenge-chloroform, i-tetrahydrofuran ne-acetate emanzini okuphuza ngokusebenzisa.Amapayipi e-CPVC.

Izinyibilikisi ezisetshenziswa ku-CPVC zibeka impilo yakho engcupheni:

I-California Pipeline Trade Commission inomthwalo wemfanelo wokubuyekeza imiphumela yezempilo yezinhlelo zamapayipi futhi iyisikhungo sokunikeza izitifiketi zamapayipi e-California, e-USA. Ihlale ikhuthaza kakhulu imiphumela eyingozi yezincibilikisi ezisetshenziselwa ukuxhuma amapayipi e-CPVC. Kutholakale ukuthi i-solvent iqukethe izakhi ze-carcinogenic ezilwaneni futhi ibhekwa njengento engase ibe yingozi kubantu. Ngakolunye uhlangothi, amapayipi e-PPR awadingi noma yimaphi ama-solvents futhi axhunywe ubuchwepheshe be-hot-melt, ngakho awaqukethe amakhemikhali anobuthi.

Ipayipi le-PPR yimpendulo enempilo:
Amapayipi e-KPT PPR enziwe ngezinto ezingavuthiwe zekhwalithi ephezulu, izinga lokudla, aguquguqukayo, aqinile, futhi angakwazi ukumelana nezinga lokushisa elingu- -10°C kuya ku-95°C. Amapayipi e-KPT PPR anempilo ende yesevisi, angasetshenziswa iminyaka engaphezu kwengama-50.