API 5LB pipeline steel yog qib steel nyob rau hauv cov kav dej steel yeeb nkab specification tsim los ntawm American Petroleum Institute, thiab nws qib sib xws yog L245. Cov qib steel hauv API 5L tus qauv suav nrog A, B, X42, X46, X52, X56, X60, X65, X70, X80, X90, X100, X120, thiab lwm yam.
Tshuaj muaj pes tsawg leeg thiab mechanical zog
Chemical Composition API 5L Pipes Qib B 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 Qib B PSL 2 Kab Yeeb Nkab Lub Cev Khoom
| 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 |
Cov txheej txheem ntau lawm thiab kev kho cua sov
Cov txheej txheem tsim khoom ntawm API 5LB pipeline steel suav nrog kev kho cua sov microalloying. Cov kev kho cua sov muaj xws li qhov kub thiab txias ({2}} degrees), nruab nrab-kub tempering (250-500 degrees) thiab high-temperature tempering (500-650 degrees). Lub hardness tom qab qis-kub tempering feem ntau yog HRC58-64, hardness tom qab nruab nrab-kub tempering feem ntau yog HRC{10}}, thiab hardness tom qab high-temperature tempering feem ntau yog HB200-330 3.
Siv
API 5LB pipeline steel yog tsuas yog siv rau cov roj thiab roj kav dej thiab tsim nyog rau cov kav dej ntawm ntau theem siab. Vim nws txoj kev vuam zoo thiab tus nqi qis, nws tau siv dav hauv kev lag luam roj thiab roj.
API 5L gr b carbon yeeb nkab
