API 5L X52 thiab X70 yog ob qho tib si siv cov yeeb nkab steel cov ntaub ntawv hauv kev lag luam roj thiab roj. Hais txog cov tshuaj muaj pes tsawg leeg, cov ntsiab lus carbon ntawm X52 raj xa dej feem ntau yog 0.26%, thiab cov ntsiab lus manganese yog 1.40%, thaum cov ntsiab lus carbon ntawm X70 steel yeeb nkab zoo ib yam, tab sis cov ntsiab lus manganese siab dua ntawm 1.65%, thiab nws kuj muaj kab. cov khoom xws li vanadium, niobium, thiab titanium. Qhov sib txawv ntawm cov tshuaj muaj pes tsawg leeg ua rau nws qhov kev ua tau zoo sib txawv. Nyob rau hauv cov nqe lus ntawm txhua yam khoom, X52 muaj qhov tsawg kawg nkaus yield zog ntawm 360MPa thiab lub zog tensile ntawm 460MPa; X70 muaj qhov tsawg kawg nkaus lub zog ntawm 482MPa thiab lub zog tensile ntawm 535MPa. X70 cov kav dej muaj zog muaj zog ntau dua thiab tuaj yeem tiv taus siab dua thiab thauj khoom, thiab tsim nyog rau kev siv roj thiab kev thauj mus los ntev.
Hauv daim ntawv thov scenarios, X52 yog siv rau kev thauj mus los ntawm cov roj thiab roj thiab cov kua dej thiab cov khoom siv cuam tshuam txog kev ua haujlwm hauv tshuaj lom neeg, kev tsim kho thiab lwm yam haujlwm; X70 feem ntau yog siv rau kev ncua deb, loj-ntev kev thauj mus los ntawm cov roj kub siab thiab cov pa roj carbon monoxide, thiab nws lub zog siab thiab tawv yog tsim nyog rau kev ua haujlwm ntau dua.
Nyob rau hauv cov nqe lus ntawm vuam kev ua tau zoo, X52 muaj zoo weldability, thiab X70 tuaj yeem welded, tab sis vim yog cov ntsiab lus ntawm cov pa roj carbon ntau dua thiab manganese me ntsis, yuav tsum muaj kev tswj xyuas cov txheej txheem ntau dua.
API 5L GRB X70 PSL 1/2 yeeb nkab Mechanical Properties
|
Qib |
Yield zog Mpa |
Tensile zog Mpa |
Raito |
Elongation |
||
|
|
min |
max |
min |
max |
max |
min |
|
X70Q |
485 |
635 |
570 |
760 |
0.93 |
f |
Tshuaj muaj pes tsawg leeg ntawm API 5L X70 Seamless Pipes
|
Qib |
Tshuaj muaj pes tsawg leeg |
|||||||
|
|
C |
Si |
Mn |
P |
S |
V |
Nb |
Ti |
|
API 5L X70 |
0.17 |
0.45 |
1.75 |
0.020 |
0.010 |
0.10 |
0.05 |
0.06 |
Tshuaj muaj pes tsawg leeg ntawm API 5L X52 Steel Pipe
|
Qib |
C |
Si |
Mn |
P |
S |
V |
Nb |
Ti |
|
API 5L X52 |
0.16 |
0.45 |
1.65 |
0.020 |
0.010 |
0.07 |
0.05 |
0.04 |
API 5L X52 Tube Mechanical Properties
|
Qib |
Yield zog Mpa |
Tensile zog Mpa |
Elongation |
|
X52 |
360 |
460 |
c |
API 5L X52 PSL2 Carbon Steel Seamless Yeeb Nkab
