API 5L GR.B PSL2 seamless yeeb nkab ua raws li cov tubing specification tsim los ntawm American Petroleum Institute (API), qhov twgPSL 2 (Product Specification Level 2)txhaiskev cai nruj dua. Piv rau PSL 1, PSL 2 seamless kav xav tau:
Txhim kho tshuaj muaj pes tsawg leeg tswj
Kev ntsuam xyuas nruj me ntsis
Txhim kho tsis yog- cov qauv kuaj kev puas tsuaj
Technical zoo muaj xws li:
Dimensional Precision:
168.3mm OD kam rau ua ± 1%
Phab ntsa thickness sib txawv Tsawg dua los yog sib npaug rau ± 10%
Corrosion Resistance:
Kev pabcuam lub neej txuas ntxiv los ntawm cov txheej txheem (xws li,3 PEB) lubcorrosion inhibitors
Weldability:
Carbon sib npaug (CE) Tsawg dua lossis sib npaug rau 0.43%
Haum rauField girth welding ua haujlwm
Chemical Composition API 5L Pipes Qib B hauv PSL2 Kab Yeeb
| PSL 2 | ||||||||||||
| QIB | Tshuaj muaj pes tsawg leeg | Mechanical Property | ||||||||||
| C (Max) |
Mn (Max) |
P (Max) |
S (Max) |
Tensile | Yield | CE IMPACT ENERGY | ||||||
| Psi x 1000 | Mpa | Psi x 1000 | Mpa | PCM | IIW | J | FT/LB | |||||
| B | 0.22 | 1.20 | 0.025 | 0.015 | 60 - 110 | 414 - 758 | 35 - 65 | 241 - 448 | 0.25 | 0.43 | T/L 27/41 | T/L 20/30 |
API 5L GRB PSL2 Kab Pipe Lub cev muaj zog
| API 5L Qib | Yield zog min. (ksi) |
Tensile zog min. (ksi) |
Yield rau Tensile Ratio (max.) |
Elongation min. %1 |
| B | 35 | 60 | 0.93 | 23 |
API 5L Qib-B PSL1 PSL2 Kab Pipe Sib Piv Table
PSL1 |
PSL2 |
|
| CVN cuam tshuam (Charpy) kuaj | Tsis xav tau | xav tau rau txhua qib |
| Nondestructive soj ntsuam ntawm seamless | Tsuas yog thaum tus neeg yuav khoom qhia SR4 | SR4 yuav tsum |
| Daim ntawv pov thawj | Daim ntawv pov thawj thaum tau teev tseg rau SR15 | Daim ntawv pov thawj (SR 15.1) yuav tsum tau ua |
| Traceability | Traceable tsuas yog kom txog thaum tag nrho cov kev xeem dhau, tshwj tsis yog SR15 tau teev tseg | Traceable tom qab ua tiav cov kev xeem (SR 15.2) yuav tsum tau ua |
| Hydrostatic Test | Yuav tsum tau | Yuav tsum tau |
Cov txheej txheem ntau lawm ntawm API 5L GR.B PSL2 Seamless Yeeb Nkab
Billet Cua sov
Kev tswj qhov kub thiab txias:1200 ± 50 degree(cov khaub ncaws los ntawm - cua sov yuav tsum tau)
Piercing
Khoom pob zeb → hollow plhaub ntawmhla- yob tho tshuab
Rolling & Sizing
Phab ntsa thickness txo rau7.11mm 7nrog± 0.5 hli precision(ib API 5L 9.3.2.1)
Kev kho cua sov
normalizinglos yogQuenching + Temperingrau optimized metallography
Tiav & Kev Xeem
Nto polishing →Stencil marking→ Hydro test ntawmNtau dua lossis sib npaug li 15 MPa(ASME B31.8)
API 5L GR.B PSL2 carbon steel kab yeeb nkab Hoobkas
