I-ASTM A53I-Standard ngumphakathi waseMelika wokuhlola nezinto zokwakha. I-Standard ihlanganisa izinhlobo ezahlukahlukene zamapayipi nobukhulu futhi isebenza ezinhlelweni zamapayipi ezisetshenziselwa ukuthutha amagesi, uketshezi kanye nolunye uketshezi. Amapayipi ajwayelekile we-ASTM A53 asetshenziswa kakhulu ezindaweni zezimboni nezemishini, nasembonini yezokwakha yokuhlinzekwa kwamanzi, ukufudumeza kanye nezinhlelo zomoya.

Ngokuvumelana neI-ASTM A53Okujwayelekile, amapayipi angahlukaniswa ngezinhlobo ezimbili: thayipha u-F nohlobo lwe-E. Uhlobo F luyipayipi elingenamthungo kanye nohlobo lwe-e kagesi ipayipi. Zombili lezi zinhlobo zamapayipi zidinga ukwelashwa okushisa ukuze kuqinisekiswe ukuthi izakhiwo zazo zemishini kanye nokwakheka kwamakhemikhali zihlangabezana nezidingo ezijwayelekile. Ngaphezu kwalokho, izidingo zangaphandle zepayipi kufanele zihambisane nezinhlinzeko ze-ASTM A530 / A530M Standard ukuqinisekisa ikhwalithi yayo yokubukeka.

Izidingo zokwakheka kwamakhemikhali ze-ASTM A53 ezijwayelekile zimi ngalendlela elandelayo: Okuqukethwe kwekhabhoni akudluli ku-0,05%, okuqukethwe kwe-phromium awedluli ku-0,440%, okuqukethwe kwethusi akudluli ku-0,40%. Le mikhawulo yokwakheka kwamakhemikhali iqinisekisa amandla, ubulukhuni kanye nokumelana nokugqwala kwepayipi.

Ngokuya ngempahla yemishini, i-ASTM A53 ejwayelekile idinga ukuthi amandla ashubile futhi amandla okuvutha amapayipi awaphansi kuka-330MPA kanye ne-205MPA ngokulandelana. Ngaphezu kwalokho, inani eliphakeme lepayipi libuye libe nezidingo ezithile zokuqinisekisa ukuthi alithambekele ekuqhekekeni noma ekuguqukeni ngesikhathi sokusetshenziswa.

Ngaphezu kokuqanjwa kwamakhemikhali kanye nezakhiwo zemishini, i-ASTM A53 Standard ihlinzeka ngemithetho enemininingwane ngosayizi kanye nekhwalithi yokubukeka kwamapayipi. Amasayizi amapayipi asuka ku-1/8 intshi libe ngamasentimitha angama-26, anezinketho eziningi zodonga. Ikhwalithi yokubukeka yepayipi idinga indawo ebushelelezi ngaphandle kwe-oxidation esobala, imifantu kanye nezici zokuqinisekisa ukuthi ngeke ikwazi ukuvuza noma zonakaliswe ngesikhathi sokufakwa nokusetshenziswa.

Ngokuvamile, i-ASTM A53 Standard iyindinganiso ebalulekile yamapayipi e-carbon. Ihlanganisa izidingo zokwakheka kwamakhemikhali, izakhiwo zemishini, ubukhulu kanye nekhwalithi yokubukeka kwamapayipi. Amapayipi akhiqizwa ngokuya ngaleli Zinga angaqinisekisa ukusebenza okuzinzile nokusebenza okuthembekile, futhi alungele izinhlelo zamapayipi ezinkambeni ezahlukahlukene zezimboni nezokwakha. Ukuqalwa kanye nokwenziwa kwamazinga we-ASTM A53 kubaluleke kakhulu ekuqinisekiseni ukusebenza okuphephile kwamapayipi nokukhuthaza ikhwalithi yokwakhiwa kwephrojekthi.