API 5L yog cov yeeb nkab steel qauv tsim los ntawm American Petroleum Institute. X42 thiab L290 yog qib kev xaiv nyob rau hauv tus qauv no, sawv cev rau qhov tsawg kawg nkaus lub zog ntawm 290 MPa (megapascals). Cov yeeb nkab steel no feem ntau yog siv rau kev thauj cov kua dej xws li roj thiab cov pa roj carbon monoxide, xav tau lub zog zoo, toughness, thiab weldability.
API 5L X42 PSL1 PSL2 Kab Yeeb Tshuaj Tshuaj
| C | Si | MN | P | S | V | Nb | Ti | Lwm yam | Carbon sib npaug | |
| Max (b) | Max | Max (b) | Max | Max | Max | Max | Max | % siab tshaj | ||
| CE (IIW) | CE (Pcm) | |||||||||
| 0.26 | – | 1.20 | 0.030 | 0.030 | (c),(d) | (c),(d) | (d) | (a) | – | – |
API L290 PSL1 PSL2 carbon steel yeeb nkab Mechanical Requirement
| Tensile Requirements ntawm cov yeeb nkab lub cev ntawm welded kav | Piv txwv | Elongation | CVN Absorbed Zog | Kev kho cua sov | ||||
| Yield zog (R10.5) | Tensile zog (R) | R 10.5/ R | % | 0℃celsius | ||||
| PSI | Mpa | PSI | Mpa | Max | Yam tsawg kawg nkaus | Min J | Min ft. lb | Wield Seam Normalizing |
| 35,500 min | 245 feeb | 60,200 min | 415 nqi | – | – | – | ||
Qhov Loj thiab Qhov Loj ntawm API 5L X42 Kab Yeeb
Kev sim thiab tshuaj xyuas ntawm API 5L X42 PSL1 PSL2 Kab kav
Hydrostatic Test
Bending Test
Flattening Test
CVN Impact Test
Ntim thiab shipping
