PPR xa cov khoom fittings yog ib qho khoom siv copolymerization polypropylene synthesized los ntawm PP thiab PE roj theem txoj kev. Nws yog ib txoj yas yeeb nkab uas tsim hauv xyoo 1980 thiab thaum ntxov xyoo 1990. Nws tseem nrov heev niaj hnub no, thiab ntau tus neeg siv nws.
Peb txhua tus paub hais tias nws muaj kev tiv thaiv zoo corrosion, thiab muaj zog nyob hauv ib co acid thiab alkaline ib puag ncig. Qhov no tsis yooj yim rau lwm yam tshuaj yeeb dej cawv rau cov yam ntxwv ntawm cov kav dej yog qhov tseem ceeb heev, yog li nws daim ntawv thov kuj muaj peev xwm nthuav dav ntxiv. Ntxiv rau, kev ruaj ntseg ntawm PPR yeeb fittings txiav txim siab tias nws muaj peev xwm tuav lub zog ntawm pp-r tube hauv qee yam mob hnyav, thiab nws yuav tsis yooj yim tawg.
PPR xa fittings muaj kev yoog mus rau qhov kub thiab txias, vim li ntawd peb feem ntau pom kev siv PPR yeeb nkab fittings li txias thiab dej kub pipes.a
