Seamless steel kav rau geological drilling thiab roj drilling tswj; drilling rigs yog siv los laum qhov dej txhawm rau txhawm rau tshawb xyuas cov qauv pob zeb hauv av, dej hauv av, roj, natural gas thiab ntxhia. Kev siv cov roj thiab cov nkev ntuj yog sib cais los ntawm qhov zoo drilling. Seamless steel kav rau roj drilling rau geological drilling tswj yog cov cuab yeej tseem ceeb rau drilling, feem ntau suav nrog cov tub ntxhais cov kav dej, cov tub ntxhais hauv cov kav dej, cov kav dej, cov kav dej, thiab lwm yam.
Txij li thaum cov kav dej drilling yuav tsum nkag mus tob rau hauv stratum ntawm ntau txhiab meters, kev ua haujlwm yog qhov nyuaj heev. Cov kav dej laum yog raug rau cov kev ntxhov siab xws li nro, siab, dabtsi yog khoov, torsion thiab tsis sib xws ntawm kev thauj khoom, nrog rau cov av nkos thiab pob zeb hnav. Yog li, cov kav dej yuav tsum tau ua kom nws yuav tsum muaj lub zog txaus, hardness, hnav tsis kam thiab cuam tshuam toughness. Cov hlau siv rau cov kav hlau yog sawv cev los ntawm "DZ" (tus suav pinyin prefix rau geology) ntxiv rau tus lej ib los sawv cev rau cov ntsiab lus steel. Cov qib steel feem ntau suav nrog DZ45 45MnB thiab 50Mn; DZ50's 40Mn2, 40Mn2Si; DZ55's 40Mn2Mo, 40MnVB; DZ60's 40MnMoB, DZ65's 27MnMoVB.
Petroleum cracking tubes: Seamless tubes rau cov tub rauv, cov raj cua sov thiab cov kav dej hauv cov roj av refineries. Feem ntau siv yog cov pa roj carbon zoo (10, 20), hlau alloy (12CrMo, 15CrMo), cov hlau tsis zoo (12Cr2Mo, 15Cr5Mo), stainless hlau (1Cr18Ni9, 1Cr18Ni9Ti).
Ntxiv nrog rau kev txheeb xyuas cov tshuaj muaj pes tsawg leeg thiab ntau yam khoom siv hluav taws xob ntawm cov roj av cracking steel kav, nws kuj yuav tsum tau xyuas kom cov dej siab, flattening, flaring thiab lwm yam kev ntsuam xyuas, nrog rau qhov zoo ntawm qhov chaw thiab tsis muaj kev puas tsuaj. Cov yeeb nkab steel raug xa mus rau hauv qhov chaw kho cua sov.
