Ukukhetha impahla efanele yokufakwa kwamapayipi kubalulekile ukuqinisekisa ukuqina, ukuphepha, nokusebenza kahle kwezinhlelo zamanzi ezindlini nasemisebenzini yezimboni. Phakathi kwezinketho ezithandwayo ezitholakala namuhla, amapayipi e-PPR (Polypropylene Random Copolymer) kanye ne-PEX (Cross-linked Polyethylene) agqama ngenxa yezici zawo ezihlukile nezinzuzo zawo. Kulo mhlahlandlela ophelele, sizohlola amapayipi e-PPR kanye ne-PEX, sigqamise izici zawo, izinzuzo, kanye nokusetshenziswa kwawo okufanele ukuze sikusize wenze isinqumo esinolwazi ngezidingo zakho zokufakwa kwamapayipi.

Lapho ukhetha phakathi kwemibhobho ye-PPR neye-PEX, izinto ezibalulekile eziningana ziyathinteka. Okokuqala ukulula kokufakwa: ukulula kokuphatha, izindlela zokuhlanganisa, nokuguquguquka kungathinta kakhulu izindleko zomsebenzi nesikhathi. Impilo ewusizo ingenye into ebalulekile, njengoba imibhobho eqinile yehlisa ukuphindwa kokufakwa nokugcinwa. Izinto zezindleko azifaki kuphela izindleko zokuqala zezinto kodwa futhi nokonga kwesikhathi eside okuhlobene nokusebenza kahle kwamandla nokulungiswa. Okokugcina, umthelela wezinto ezithinta imvelo nokuphepha kwazo emanzini okuphuza kubaluleke kakhulu ekukhetheni imibhobho yesimanje.

Ukuqonda lezi zinto kusiza amabhizinisi kanye nezindlu zokuhlala ukuhlola ukuthi iyiphi uhlobo lwepayipi oluhambisana kangcono nezidingo zabo zephrojekthi kanye nezinhloso zokuphila. Ukufaka amapayipi anokumelana okuphezulu nezinguquko zeshisa, ukuvezwa kwamakhemikhali, kanye nezinguquko zengcindezi kuqinisekisa ukusebenza okuthembekile ezimweni ezihlukahlukene.

Ama-pipe e-PPR enziwe nge-polypropylene random copolymer, i-thermoplastic polymer eyaziwa ngokumelana kwayo okuphezulu nokushisa nezinto zokwakha. Avame ukusetshenziswa ezinhlelweni zamanzi ashisayo naphakathi, ezinhlelweni zokushisa, nasezinhlelweni zezimboni ngenxa yokumelana kwabo okuqinile nokumelana nokugqwala. Ama-pipe e-PPR avame ukuhlanganiswa ngokusebenzisa ukushisa, akha ukuhlanganiswa okuqinile, okungaphumi amanzi okuphila iminyaka eminingi.

Ama-pipe e-PEX, ngakolunye uhlangothi, enziwe nge-polyethylene ehlangene, enikeza ukuhamba okuhle kakhulu nokumelana nokuphuka ngaphansi kwengcindezi. Le nqubo yokuhlanganisa ithuthukisa ukumelana kwabo kokushisa nengcindezi, okwenza kube kufanelekile ezinhlelweni eziningi zokuhlinzeka ngamanzi nezokushisa. Ama-pipe e-PEX avame ukufakwa ngezinto zokuhlanganisa ezisebenzayo noma izinhlelo zokucindezela, ezithuthukisa ukuhlanganiswa okusheshayo nokulula ezindaweni ezincane.

Izinzuzo zombili izinhlobo zamapayipi zifaka ukumelana ne-scale ne-chlorine, izici ezinhle zokugeleza, kanye nokunciphisa ukudluliswa kwezwi. Ubukhulu bazo obulula buwenza kube lula ukuhamba nokuphatha endaweni.

Lapho kuqhathaniswa amapayipi e-PPR ne-PEX, ukumelana nezinga lokushisa nomfutho kuyisisekelo. Amapayipi e-PPR avame ukumelana nezinga lokushisa elifika ku-95°C nemifutho engu-20 bar, okwenza alungele izinhlelo zamanzi ashisayo. Amapayipi e-PEX aphumelela ekuvumeleni, asekelwe izinga lokushisa elifika ku-90°C nemifutho engaba ngu-10 kuya ku-16 bar kuye ngokuhlukaniswa, okufanele izinhlelo zokushisa nokupholisa ezindlini.

Ukumelana namakhemikhali kungenye into ehlukanisayo. I-PPR imelana kakhulu nezinsipho eziningi kanye ne-alkalis, okwenza ilungele izimo zamanzi ezinolaka, kanti i-PEX ibonisa ukumelana okuhle nokugqwala kodwa ingase yonakale ngokuchayeka isikhathi eside ekukhanyeni kwe-UV. Izindlela zokufaka nazo ziyahlukahluka: i-PPR idinga imishini ekhethekile yokushisela kanye nokuqeqeshwa, kanti i-PEX inikeza ukufakwa okulula ngezixhumi zokucindezela zemishini, kunciphisa izindleko zabasebenzi.

Ukuhlaziywa kwezindleko kubonisa ukuthi amapayipi e-PEX avame ukuba nezindleko eziphakeme zezinto kodwa ayonga ngesikhathi sokufakwa, kanti amapayipi e-PPR angabizi kakhulu kodwa adinga izindlela zokuhlanganisa ezisebenzisa umsebenzi omningi. Ukucubungula lezi zici kanye nesikali nephuphuthezi lephrojekthi kusiza ukwenza isabelomali nokusebenza kube kuhle.

Izimpondo ze-PPR zisetshenziswa kabanzi ezindaweni zezimboni ngenxa yokumelana kwazo namakhemikhali nokuqina kwazo. Zilungele kahle ukuhlinzekwa ngamanzi ashisayo abandayo, izinhlelo zokushisa, nemigqa yomoya ocindezelwe. Ukuphila kwazo isikhathi eside nokumelana nokugqwala kwenza zibe ukukhetha okuncanyelwayo ezakhiweni ezintsha kanye nokufakwa okukhulu kwamapayipi.

Imibhobho ye-PEX ithandwa kakhulu emaphrojekthi ezindlu ngenxa yokuguquguquka kwayo nokulula ukuyifaka. Ilungele ukulungisa izinhlelo zokudonsa amanzi ezikhona, ukufudumala kwezindlu ezisekelwe phansi, nemigqa yamanzi okuphuza. Amandla okugoba imibhobho ye-PEX ezindaweni eziyikona ngezinto ezimbalwa ezinciphisa izindawo zokuphuma amanzi nesikhathi sokuyifaka, okuyinzuzo kakhulu emisebenzini yokulungisa.

Zombili izinhlobo zemibhobho zinezicelo ezikhethekile kuye ngezimo zemvelo, imithetho yokwakha, kanye nezintandokazi zokuklama uhlelo.

Ukuqhubeka nokuphila nokuphepha kubalulekile ekukhetheni izinto zokwakha amapayipi. Amapayipi e-PPR angasetshenziswa kabusha futhi anomthelela ophansi wekhabhoni ngesikhathi sokukhiqiza uma kuqhathaniswa namapayipi ensimbi. Ubulukhuni bawo buqinisekisa ukuthi akukho zinto eziyingozi eziphuma emanzini okuphuza, kuhambisana nemithetho yezempilo. Amapayipi e-PEX, nakuba enikeza izinzuzo ekusebenzeni kahle kwamandla ngenxa yezakhiwo zawo zokufudumeza, abeka izinselelo ekusetshenzisweni kabusha kanye nezinkinga ezingaba khona mayelana nezithasiselo zamakhemikhali ezisetshenziselwa ukukhiqiza.

Zombili izinhlobo zamapayipi zihlangabezana nezindinganiso eziqinile zamazwe omhlaba zokuphepha kwamanzi aphilayo. Ukukhetha imikhiqizo eqinisekisiwe evela kubakhiqizi abahloniphekile njenge-Shijiazhuang Shengshichang Trading Co., Ltd. kuqinisekisa ukuhambisana nezidingo zemvelo nezempilo, kuqinisekisa ukuhanjiswa kwamanzi aphephile nokwethembeka kwesikhathi eside.

I-Shijiazhuang Shengshichang Trading Co., Ltd. ingumphakeli omethembayo ochwepheshe kwezixazululo zokugudluza amanzi ezisezingeni eliphezulu, okubandakanya imibhobho ye-PPR, i-PVC, kanye ne-PEX. Le nkampani igcizelela ikhwalithi yemikhiqizo ephakeme, amanani ancintisanayo, kanye nenkonzo yamakhasimende enhle kakhulu. Ngokusebenzisa ubuchwepheshe obuthuthukisiwe bokukhiqiza, baqinisekisa ukuthi imibhobho yabo ihlangabezana namazinga omhlaba wokuhlala isikhathi eside, ukuphepha, kanye nokuba nekhono emvelweni. Ukubambisana nabo kunikeza amabhizinisi izinto zokugudluza amanzi ezithembekile eziklanyelwe ukuthuthukisa ukusebenza nokuhlala isikhathi eside kwezinhlelo zokugudluza amanzi.

Ngokufingqiwe, amapayipi e-PPR ne-PEX womabili anikeza izinzuzo ezibalulekile ezinhlelweni zokufakwa kwamanzi, kodwa ukufaneleka kwawo kuncike ezidingweni ezithile zephrojekthi. Amapayipi e-PPR aphumelela kakhulu ekuqinisweni, ukumelana namakhemikhali, nokufaneleka kwezicelo ezishisayo, okwenza alungele amaphrojekthi ezimboni nokwakhiwa okusha. Amapayipi e-PEX agqama ngokuguquguquka, ukufakwa okulula, nokulungiselelwa ezindlini nasezindaweni ezilungisiwe.

Lapho ukhetha izinto zokubopha amapayipi, cabanga ngezinto ezifana nendawo yokufakwa, isabelomali, impilo ende, nomthelela emvelweni. Ukubandakanyeka nabathengisi abahlonishwayo njenge-Shijiazhuang Shengshichang Trading Co., Ltd. kuqinisekisa ukufinyelela kumikhiqizo esezingeni eliphezulu nokusekelwa kochwepheshe, okufaka isandla ekufakweni kwamanzi okuphumelelayo.

Kulabo abanesifiso sokuhlola izinketho zemikhiqizo nokuthola izixazululo ezenziwe ngendlela oyifisayo, ukuvakashela i-ImikhiqizoIkhasi linikeza uhla oluphelele lwezinto zokwakha amapayipi. Ukuze ufunde kabanzi mayelana nesizinda senkampani nokuzibophezela kwayo ekuqeqeni, i-Mayelana Nathi ikhasi linikeza imininingwane eningiliziwe. Ukuze uthole ukwesekwa kwezobuchwepheshe nosizo, i-Ukusekelwa ikhasi liyatholakala ukubhekana nemibuzo yamakhasimende.

Zombili izimpondo ze-PPR neze-PEX zilungele amanzi ashisayo; nokho, izimpondo ze-PPR ngokuvamile zibhekana namazinga okushisa aphezulu kanye nezingcindezi, okwenza zikhethwe kakhulu ezinhlelweni zamanzi ashisayo ezimbonini.

Yebo, izimpondo ze-PEX eziqinisekisiwe ziphephile emanzini okuphuza futhi zihlangabezana namazinga aqinile ezempilo nezokuphepha.

Imibhobho ye-PPR ayimelani ne-UV futhi kufanele ivikelwe ekukhanyeni kwelanga ukuze kugwenywe ukubola.

Amapayipi e-PEX ngokuvamile anamanani aphezulu okwakha kodwa agcina ngesikhathi sokufaka; amapayipi e-PPR aphansi kodwa adinga abasebenzi abanolwazi ukuze axhume.

Amashubhu e-PPR alungele ukugaywa kabusha futhi anomthelela omncane emvelweni ngesikhathi sokukhiqizwa, kanti amashubhu e-PEX anikeza izinzuzo zokonga amandla kodwa abhekana nezinselelo ekugayweni kabusha.