Dab tsi yog cov yeeb nkab Octg
Mar 27, 2024
OCTG yog lub npe luv rau Roj Lub Tebchaws Tubular Khoom. OCTG yog cov yeeb nkab siv hauv kev tsim cov roj thiab roj.
- API SPEC 5CT OCTG yeeb nkab
Txhua qib steel ntawm casing thiab tubing hauv API SPEC 5CT tus qauv yog tib yam. Xws li H40, J55, K55, N80-1, N80-Q, R95, M65, L80-1, L80-9Cr, L80-13Cr, C90 , T95, C110, P110, Q125, tag nrho ntawm 15 qib steel, muab faib raws li kev siv tau muaj plaub pawg, uas yog thawj pab pawg ntawm qis thiab nruab nrab lub zog casing thiab tubing, suav nrog rau qib steel: H40, J55, K55, N80-1, N80-Q, thiab R95; pawg thib ob txwv lub zog tawm los thiab tsim nyog rau hydrogen sulfide kev ntxhov siab. Casings thiab roj kav dej hauv qhov chaw corrosive muaj xws li xya qib steel: M65, L80-1, L80-9Cr, L80-13Cr, C90, T95, thiab C110; pawg thib peb ntawm high-strength casing thiab roj kav tsuas muaj ib tug steel qib, P110; pawg plaub Muaj tsuas yog ib qho steel qib Q125 rau ib pab pawg ntawm lub zog siab thiab cov tubing uas txwv cov hardness fluctuations. Cov txheej txheem no qhia txog kev xa khoom ntawm cov khoom siv rau cov casing, tubing thiab pup pob qij txha, coupling blanks, coupling cov ntaub ntawv thiab cov khoom siv, thiab tsim Cov kev cai ntawm peb cov khoom specification, xws li PSL-1, PSL-2 thiab PSL -3.
- Tensile thiab Hardness Requirements
| Pab pawg |
Qib |
Hom |
Hom |
Yield zog (MPa) |
Tensile zog (MPa) |
Hardness | Specified Phab ntsa Thickness | Cia rau Hardness Variation | ||
|
min |
max |
min |
HRC |
HBW |
mm |
HRC |
||||
|
1 |
H40 |
276 |
552 |
414 |
||||||
|
J55 |
379 |
552 |
517 |
|||||||
|
K55 |
379 |
552 |
655 |
|||||||
|
N80 |
1 |
1 |
552 |
758 |
689 |
|||||
|
N80 |
Q |
Q |
552 |
758 |
689 |
|||||
|
R95 |
655 |
758 |
724 |
|||||||
|
2 |
M65 |
448 |
586 |
586 |
22 |
235 |
||||
|
L80 |
1 |
1 |
552 |
655 |
655 |
23 |
241 |
|||
|
L80 |
9 cr ua |
9 cr ua |
552 |
655 |
655 |
23 |
241 |
|||
|
L80 |
13 Cr |
13 Cr |
552 |
655 |
655 |
23 |
241 |
|||
|
C90 |
1 |
1 |
621 |
724 |
689 |
25.4 |
255 |
Tsawg dua lossis sib npaug li 12.70 12.71-19.04 19.05-25.39 Ntau dua lossis sib npaug rau 25.40 |
3.0 4.0 5.0 6.0 |
|
|
T95 |
655 |
758 |
724 |
25.4 |
255 |
Tsawg dua lossis sib npaug li 12.70 12.71-19.04 19.05-25.39 Ntau dua lossis sib npaug rau 25.40 |
3.0 4.0 5.0 6.0 |
|||
|
C110 |
758 |
828 |
793 |
30 |
286 |
Tsawg dua lossis sib npaug li 12.70 12.71-19.04 19.05-25.39 Ntau dua lossis sib npaug rau 25.40 |
3.0 4.0 5.0 6.0 |
|||
|
3 |
P110 |
758 |
965 |
862 |
||||||
|
4 |
Q125 |
862 |
1034 |
931 |
b |
Tsawg dua lossis sib npaug li 12.70 12.71-19.04 Ntau dua lossis sib npaug rau 19.05 |
3.0 4.0 5.0 |
|||
GNEE Group muab API 5CT H40, J55, K55, N80-1, N80-Q, R95, M65, L80-1, L80-9Cr, L{{10} }Cr, C90, T95, C110, P110, Q125 roj zoo kav, koj txais tos txhua lub sijhawm sab laj.
