1. Kapangidwe kabwino kwambiri ka thupi ndi mankhwala, kukana dzimbiri, komanso kukana ukalamba.
2. Kugwiritsa ntchito bwino kwambiri, kukonza ndi kukonza kosavuta, komanso mtengo wotsika wa polojekiti.
3. Kapangidwe koyenera, kukana kuyenda kwa madzi pang'ono, kosavuta kutsekeka, komanso mphamvu yayikulu yotulutsira madzi.
4. Nthiti zozungulira mkati mwa chitoliro chozungulira zimagwiritsa ntchito kapangidwe ka Archimedean spiral, komwe sikuti kokha kumawonjezera kuchuluka kwa madzi otuluka komanso kumachepetsa phokoso. Kuchuluka kwa madzi otuluka ndi kokwera nthawi 1.5 kuposa kwa mapaipi wamba, ndipo phokoso limachepetsedwa ndi mfundo 7 mpaka 12.
5. Zolumikizira mapaipi zili ndi zida zonse, kuphatikizapo zolumikizira mapaipi zomatira, zolumikizira mapaipi zotsekereza ndi zolumikizira mapaipi otulutsa madzi pamlingo womwewo, zomwe zingakwaniritse zofunikira pakugwiritsa ntchito njira zosiyanasiyana zotulutsira madzi m'nyumba.
Mapaipi otulutsa madzi a PVC a mtundu wa "Greenpy" amagawidwa m'magulu 6 kuyambira Φ50-Φ200, kuphatikiza mapaipi olimba pakhoma, mapaipi opanda khoma, mapaipi olimba ozungulira pakhoma, mapaipi opanda khoma ozungulira, mapaipi amphamvu oteteza madzi amvula komanso mapaipi atali olimba, okhala ndi mitundu 30 ya zinthu.
Zipangizo zothandizira mapaipi zatha, kuphatikizapo zomatira za mapaipi, zomatira za mapaipi oletsa kugwedezeka ndi screw-joined, zomatira za mapaipi otulutsa madzi ofanana ndi zomatira za mapaipi oletsa kugwedezeka ndi mphepo yamkuntho, ndi mitundu yonse ya zinthu 166.
Chogulitsachi chili ndi ubwino wokhala ndi nthawi yayitali komanso kukana dzimbiri kwa mapaipi achitsulo chopangidwa ndi chitsulo; pankhani yomanga, ndi chopepuka, chosavuta kunyamula ndikuyika, komanso chosavuta kulumikiza. Mapaipi otulutsa madzi a PVC-U angagwiritsidwe ntchito kwambiri m'nyumba za boma zotsukira madzi ndi zimbudzi, m'madzi otsukira mankhwala ndi zimbudzi, m'madzi otsukira madzi amvula ndi m'minda ina.