I-API 5LIngabe indinganiso yepayipi lensimbi elisetshenziselwa ukuthutha uwoyela, igesi yemvelo namanzi. I-Standard ihlanganisa amamaki ahlukene ahlukene wensimbi, okuyi-x42 kanye ne-x52 amamaki amabili ajwayelekile. Umehluko omkhulu phakathi kwe-X42 ne-X52 yizakhiwo zazo zemishini, ikakhulukazi amandla athela amandla namandla ashubile.

X42: Amandla wesivuno esincane se-X42 Steel Pipe yi-42,000 PSI (290 MPA), kanye namandla ayo ashubile aqhamuka kuma-60,000-75,000 psi (415-520 MPA). I-x42 yensimbi yensimbi isetshenziswa ngokuvamile ezinhlelweni zamapayipi ngezingcindezi eziphakathi nendawo kanye nezidingo zamandla, zilungele ukuthutha imidiya enjengewoyela, igesi yemvelo kanye namanzi.

X52: Amandla wesivuno esincane se-X52 Steel Pipe yi-52,000 PSI (360 MPA), kanye namandla ashubile aqhamuka kuma-66,000-95,000 psi (455-655 MPA). Uma kuqhathaniswa ne-x42, ipayipi lensimbi yebanga le-x52 linamandla aphezulu futhi kufanelekile amasistimu wepayipi ngezingcindezi eziphakeme kanye nezidingo zamandla.

Ngokwesimo sokulethwa,I-API 5L standardIcacisa isimo esihlukile sokulethwa kwamapayipi ensimbi angenamthungo namapayipi we-welded:

I-Seamless yensimbi Pipe (N STATE): N Isimo sibhekisele ekwenzeni isimo sokwelashwa esivamile. Amapayipi ensimbi angenamthungo ajwayelekile ngaphambi kokulethwa ukuze ahambise i-microsecy purection yepayipi lensimbi, ngaleyo ndlela athuthukise izakhiwo zawo zemishini nokuqina. Ukwehlukanisa kungaqeda ukucindezelwa okusele futhi kuthuthukise ukuqina okuyisisekelo kwepayipi lensimbi.

I-Welded Pipe (M State): I-M State isho ukuphathwa kwe-thermomechanical kwepayipi elinenkani ngemuva kokuyala nokushiswa. Ngokuphathwa kwe-thermomechanical, ipayipi le-welded elenzelwe, ukusebenza kwendawo yokushiswa kwe-welding kuyathuthuka, futhi amandla nokwethenjwa kwepayipi elinenkani ngesikhathi kuqinisekiswa.

I-API 5L standardIcacisa ngokuningiliziwe ukwakheka kwamakhemikhali, izakhiwo zemishini, izindlela zokukhiqiza, izidingo zokuhlola kanye nezidingo zokuhlola zamapayipi ensimbi epayipi. Ukuqaliswa kwamazinga okuqinisekisa ukuphepha nokwethenjwa kwamapayipi ensimbi epayipi lapho uhambisa uwoyela, igesi yemvelo nolunye uketshezi. Ukukhethwa kwamamaki afanele amapayipi ensimbi kanye nesimo sokulethwa kungahlangabezana nezidingo ezithile zamaphrojekthi wobunjiniyela ahlukahlukene futhi kuqinisekiswe ukusebenza okuzinzile kohlelo lwepayipi.