Peb lub tuam txhab tau nyob rau hauv caij nplooj ntoo hlau xaim lag luam ntau tshaj kaum xyoo, peb yog cov kev paub thoob ntiaj teb, kev ua haujlwm, thiab peb tau
Qhov sib txawv ntawm nws thiab 718 ams lus dag nyob rau hauv tias cov tshuaj lom neeg muaj kev sib xyaw, cov ntau ntawm cov khoom siv tau nqaim, thiab kev ua ib qho kub ntxhov ntau dua.
Nyob rau hauv txoj kev no, cov khoom sib txawv yog tau.
Txawm li cas los xij, nws muaj qhov zoo dua thiab corrosion tsis kam.
uas tseem qis dua li ntawm 718 teev sawv ntxov.
Piv txwv li, nws yog siv los tsim li cas, pob qij txha, MWD / LWD Cheebtsam, cov cuab yeej nuv ntses, twj ua ke, thiab lwm yam.
UN tsis yog N07718 cov khoom siv tshuaj lom neeg sib xyaw ua ke cov ntsiab lus (%) | |||||||||||||||
Ib feem | C | Si | Mn | P | S | Cr | CU | Mo | Nb | B | Al | Ntau dua | |||
Yam Tsawg Nqi | - | - | 0.5 | - | - | ||||||||||
0.35 | 0.35 | 0.015 | 0.015 | 21 | 55 | 0.3 | 3.3 | 1.15 | 2.5 | 0.006 |
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