1. Qhov sib txawv ntawm API 5ct thiab API 5L
** API 5CT ** Qhia rau cov tseev kom muaj rau * tubing * siv nyob rau hauv cov roj / roj zoo li drilling thiab ntau lawm. Nws npog seamless / welded steel kav tsim rau downhole ib puag ncig (siab, corrosion).
** API 5L ** Tshwj xeeb cov tseev kom muaj rau cov yeeb nkab rau * siv hauv kev thauj cov roj, roj, lossis dej hauv cov raj xa dej. Nws npog seamless / welded carbon / alloy steel kav pipes tsom rau kev kis tau zoo thiab kev nyab xeeb.
### 2. Qhov sib txawv ntawm API 5L thiab ASTM A53
** API 5L ** yog rau * kev thauj mus los ntawm stricter rau tshuaj muaj pes tsawg leeg, xws li charpy cuam tshuam kev sim rau PSL 2), thiab tsis yog kev sim ua kom tsis muaj kev ua kom tsis txhob muaj kev puas tsuaj. Cov qib kawm ntau ntawm AN25 rau X120.
** ASTM A53 ** yog rau * General-hom phiaj * (cov kua roj av, cov yeeb nkab roj carbon steel. Nws muaj cov kev yuav tsum tau yooj yim dua (tsis muaj qhov cuam tshuam cuam tshuam), qib qis (a, b), thiab tso cai rau kev tsim khoom ntau. API 5L PSL 1 Qib B yog * Zoo sib xws * rau A53 Qib B tab sis tsis zoo tib yam.
### 3. Kev qhia tshwj xeeb ntawm API 5L X70
API 5L X70 yog qhov siab-zog pipeline steel qib. Qhov tseem ceeb yuav tsum:
- ** THIB KAWG XEEM lub zog: ** 485 MPa (70,300 PSI) ntawm chav tsev kub.
- ** Tensile lub zog: ** 570-760 mpa (PSL 1) lossis 570-760 mpa nrog Stricter Tswj (PSL 2).
- ** PSL 2 YUAV TSUM: ** Yuav tsum Charpy V-Motch Kev Cuam Tshuam Kev Ntsuas (EG, Max Carbon sib npaug), thiab kev ua kom tsis txhob ua kom tsis txhob muaj kev sim siab (piv txwv li, ultrasonic).
- ** Cov ntawv thov feem ntau: ** Kev Sib Kis High-Siab Hloov Pipelines.
### 4. Cov Khoom Siv Neeg Kho Tshuab ntawm API 5L X80
Rau psl 2 (feem ntau muaj nyob hauv cov ntawv thov tseem ceeb):
- ** Xed zog: ** ntau dua lossis sib npaug nrog 555 MPa (80,500 psi).
- ** Tensile Lub Zog: ** 625-825 MPA.
- ** ENAMATION: ** Txawv los ntawm cov hnoos qeev loj (piv txwv li, ntau dua lossis sib npaug rau 18% rau cov qauv hloov pauv).
- ** Toubness: ** Yuav tsum tau them tus nqi them tus nqi xeem ntawm -20℃(-4℃F) lossis qis dua (yam tsawg kawg nkaus (tsawg kawg nkaus nqus hluav taws xob teev). Tso tawm txoj kev ua kom poob qis (DWTT) feem ntau yuav tsum muaj rau bacture tswj.
### 5. Cov qib API 5L Yeeb Nkab
API 5L suav nrog ob pawg:
- ** A, A, B, X42, X46, X 5, X 5, X 905, X 70.
- ** Qib Nruab Nrab (tsawg dua): ** X90, X120.
Cov qib kawm tsis meej tsawg kawg paib zog zog (piv txwv li x 80=80}}, 000 pini tawm los). Txhua qib muaj ob theem khoom lag luam tshwj xeeb:
- ** PSL 1: ** Qhov yooj yim yuav tsum tau.
- ** PSL 2: ** Txhim Kho Kev Kuaj, Kub Hlaws Chemistry, thiab Stricter tsis yog kev dag ntxias.
