Ukusetshenziswa okubanzi kwamapayipi ensimbi angenamthungo emikhakheni yezimboni neyokwakha kwenza amazinga kanye nezidingo zekhwalithi kubaluleke kakhulu. Okubizwa ngokuthi "ipayipi lezinga ezintathu" libhekisela kumapayipi ensimbi angenamthungo ahlangabezana nezindinganiso zamazwe ngamazwe amathathu, ngokuvamile ahlanganisaI-API(I-American Petroleum Institute),I-ASTM(American Society for Testing and Materials) kanyeASME(American Society of Mechanical Engineers) amazinga. Lolu hlobo lwamapayipi ensimbi lunokwethenjelwa okuphezulu kakhulu nokuvumelana nezimo ngenxa yezindinganiso zalo eziphakeme kanye nezitifiketi eziningi, futhi lisetshenziswa kabanzi ezimbonini ezifana nowoyela, igesi yemvelo, amakhemikhali, nogesi.

Okokuqala, amapayipi ensimbi angenamthungo e-API asetshenziswa kakhulu embonini kawoyela negesi, futhi izindinganiso zawo eziyinhlokoI-API 5LfuthiI-API 5CT. Izinga le-API 5L lihlanganisa izidingo zokukhiqiza amapayipi okudlulisa ukuze kuqinisekiswe ukusebenza kwamapayipi kumfutho ophezulu, izinga lokushisa eliphezulu kanye nezindawo ezigqwalile. Izinga le-API 5CT ligxile embotsheni kawoyela kanye neshubhu ukuze kuqinisekiswe amandla nokuqina kwamapayipi ngesikhathi sokumba nokukhiqiza. Amapayipi ensimbi angenamthungo ajwayelekile e-API avamise ukuba namandla aphezulu, ukuqina okuphezulu nokumelana nokugqwala okuhle.

Okwesibili, amapayipi ensimbi angenamthungo e-ASTM ahlanganisa amasimu amaningi ezimboni, okuhlanganisa ama-boilers, abashintshi bokushisa, izakhiwo zokwakha, njll.I-ASTM A106futhiI-ASTM A53 zingamazinga amele. Ipayipi lensimbi elingenamthungo le-ASTM A106 lilungele ukusetshenziswa okunokushisa okuphezulu futhi lisetshenziswa kabanzi ezinhlelweni zamapayipi okushisa aphezulu ezitshalweni zamandla, izindawo zokucwenga kanye nezitshalo zamakhemikhali. Ipayipi lensimbi elingenamthungo le-ASTM A53 lilungele ukuthuthwa koketshezi lwenhloso ejwayelekile, okuhlanganisa amanzi, umoya nesitimu. Lezi zindinganiso zicacisa ngokuqinile ukwakheka kwamakhemikhali, izakhiwo zemishini kanye nokubekezelelana kwe-dimensional kwamapayipi ensimbi ukuze kuqinisekiswe ukwethembeka kwawo ekusetshenzisweni okuhlukahlukene.

Ekugcineni, amapayipi ensimbi angenamthungo e-ASME asetshenziswa kakhulu kuma-boilers nemikhumbi yokucindezela. I-ASME B31.3 ne-ASME B31.1 zingamazinga amabili abalulekile acacisa izidingo zokuklama nokukhiqiza amasistimu amapayipi ngaphansi kwengcindezi ephezulu kanye nezimo zokushisa eziphezulu. Izinga le-ASME ligcizelela ukuphepha nokusebenza kwesikhathi eside kwamapayipi ensimbi futhi lifanele izikhathi ezidinga ukwethembeka nokuphepha okuphezulu kakhulu, njengezimboni zamandla enuzi, izimboni zamakhemikhali nezinto ezinkulu zezimboni.

Inzuzo yamapayipi ajwayelekile amathathu ilele ekutholeni izitifiketi eziningi kanye nokusebenza okubanzi. Ngenxa yokuthi bahlangabezana nezindinganiso ze-API, ASTM kanye ne-ASME ngesikhathi esifanayo, lolu hlobo lwepayipi yensimbi engenamthungo lungahlangabezana nezidingo eziqinile zamazwe ahlukene nezifunda futhi lufanele izimo ezihlukahlukene zokusebenza eziyinkimbinkimbi. Kungakhathaliseki ukuthi ingcindezi ephezulu, izinga lokushisa eliphezulu noma imvelo ebolayo, amapayipi ajwayelekile amathathu angabonisa ukusebenza okuhle kakhulu ukuze kuqinisekiswe ukusebenza okuphephile nokuzinzile kwesistimu.

Ngamafuphi, njengomkhiqizo osezingeni eliphezulu phakathi kwamapayipi ensimbi angenamthungo, amapayipi asezingeni ezintathu asephenduke into ebaluleke kakhulu futhi ebalulekile emkhakheni wezimboni nezokwakha ngezitifiketi zawo eziningi ezijwayelekile nokusebenza okuhle kakhulu. Ukusetshenziswa kwayo okubanzi akuthuthukisi nje kuphela ikhwalithi nokuphepha kwamaphrojekthi, kodwa futhi kukhuthaza ukuthuthukiswa kanye nokusha kobuchwepheshe bezinto zensimbi. Ukukhetha amapayipi ajwayelekile amathathu akusona nje isiqinisekiso sekhwalithi, kodwa futhi nokuzibophezela ekuzinzeni kwesikhathi eside nokuphepha kwephrojekthi.