Umhlahlandlela Wezindinganiso ZaseBrazil Wepayipi Lensimbi Ehlanganisiwe: NBR7675 & NBR15420:2022 Uchaziwe

Izinga laseBrazilI-NBR7675iyincazelo eyisisekelo yamapayipi ensimbi athambile (amapayipi e-DI) ekusetshenzisweni kwamanzi, ehlanganisa:

• Izidingo zokwakheka kwamakhemikhali kwezinto zombhobho (i-carbon, i-silicon, i-manganese, i-phosphorus, i-sulfur, njll.)
• Izinkomba zokusebenza kwemishini (amandla okudonsa ≥420 MPa, amandla okukhiqiza ≥300 MPa, ukunwebeka ≥10%)
• Ukubekezelelana kobukhulu kanye nezindinganiso zesisindo
• Izidingo zobuchwepheshe zokugqoka kwangaphakathi nangaphandle
• Izindinganiso zokuhlola umfutho wamanzi

Indinganiso yakamuva,I-NBR15420:2022, kuyisibuyekezo esibalulekile ezindinganisweni zaseBrazil ngo-2022. I-NBR15420:2022 iqinisa izici ezilandelayo uma kuqhathaniswa nendinganiso yangaphambilini:

• Izidingo zokuzivumelanisa nezimo zemvelo: Kuthuthukisa ukumelana nesimo sezulu kanye nokumelana ne-UV kwezingubo ukuze kubhekane nezimo zezulu ezahlukahlukene zaseBrazil.
• Imininingwane yokusebenza kokuzamazama komhlaba: Icacisa izidingo zomklamo kanye nokufakwa kwamapayipi ensimbi athambile ezindaweni ezisebenza ngokuzamazama komhlaba.
• Izindinganiso zokusimama: Zengeza izidingo zokuvuselela izinto kanye nezinkomba zokuhlola umjikelezo wokuphila.
• Ukuhambisana kwamanzi ahlakaniphile: Kugcina amazinga obuchwepheshe bokuxhumana kwezinhlelo zamanzi ahlakaniphile zesikhathi esizayo.

Amapayipi ensimbi e-DINSEN angenawo ugesi awagcini nje ngokuthobela ngokugcwele izindinganiso ezimbili zaseBrazil, kodwa futhi awadlula ezinkombeni zokusebenza ezibalulekile.

• Umklamo onamandla aphezulu: Kuyo yonke indawo yobukhulu be-DN80-DN2600, amandla okudonsa angempela afinyelela ku-450-500 MPa, edlula indinganiso ngo-20%.
• Ukwelulwa okuhle kakhulu: Ukwelulwa kugcinwa njalo ku-12-15%, okunikeza ukumelana okuhle kakhulu kokuzamazama komhlaba kanye nokuzivumelanisa nezimo nesisekelo.
• Uhlelo olukhethekile lokumboza: Isebenzisa i-primer enothile nge-zinc kanye ne-epoxy resin esebenza kahle kakhulu, idlule ukuhlolwa kokufuthwa kukasawoti amahora angaphezu kuka-3000, idlula kakhulu izidingo ezijwayelekile.

Amapayipi ensimbi e-DINSEN athambile, idlula amazinga aseBrazil i-NBR7675 kanye ne-NBR15420:2022 ngekhwalithi, kuhlanganiswe nokuqonda okujulile izidingo ezihlukile zemakethe yaseBrazil, ihlinzeka ngezixazululo zamapayipi ezinokwethenjelwa, ezongayo, neziqhubekayo zamaphrojekthi amanzi. Asigcini nje ngokuba umhlinzeki womkhiqizo kodwa futhi singumlingani wesikhathi eside ekuthuthukisweni kwengqalasizinda yaseBrazil, sizibophezele ekuthuthukiseni ukuphepha nokusebenza kahle kwezinhlelo zamanzi zaseBrazil ngobuchwepheshe obusha.

Ukuze uthole ulwazi olwengeziwe mayelana nezincazelo zobuchwepheshe kanye nezibonelo zephrojekthi yamapayipi ensimbi e-DINSEN ahambisana nezindinganiso zaseBrazil, sicelaXhumana nathingemininingwane yobuchwepheshe.