Cov kav hlau loj-caliber yog ua los ntawm cov phaj tuab thiab cov phaj kub-dov. Txoj kev tsim khoom yog thawj zaug raws li txoj kev vuam, thiab kev ua haujlwm siab thiab kev ntseeg siab SubmerGed Arc Vuam steel yeeb nkab yog hu ua SAW steel yeeb nkab. Cov yeeb nkab loj-caliber steel tau tham hauv kab lus no yog tsom rau ntawm SAW steel yeeb nkab. SAW steel kav muab faib ua faus arc-welded stitched steel yeeb nkab L-SAW thiab kauv vuam faus arc vuam kauv steel yeeb H-SAW. L-SAW steel yeeb nkab muaj UO molding txoj kev haum rau loj-scale ntau lawm, ib tug nkhaus rau cov menyuam txoj kev thiab siab tshuab cuab tam txoj kev haum rau ib tug loj tus naj npawb ntawm ntau yam.
JCOE molding txoj kev yog ib txoj kev ntawm UO molding txoj kev thiab lub siab tshuab cuab tam txoj kev. Txawm hais tias muaj txheej txheem txoj kab uas hla ntawm qhov kawg ntawm lub siab muaj kev cuam tshuam zoo rau kev ua haujlwm ntawm cov yeeb nkab steel, thiab seb cov txheej txheem kuj yog ib qho ntawm cov kev faib tawm. H-Saw yog sib npaug rau cov kav welded kauv, tsim cov dov steel phaj rau hauv cov duab kauv, thiab tom qab ntawd welded qhov chaw docking. Ntxiv nrog rau cov txheej txheem ntawm kev tsim thiab muab tso rau vuam, txhawm rau kom tau txais cov khoom tsim tau zoo thiab cov kav hlau zoo, ob-kauj ruam kauv vuam txoj kev ntawm SAW kuj tseem siv tau tom qab qhov chaw vuam.
Raws li ib txwm muaj, cov ntaub ntawv siv los ua cov kav dej loj-diameter kauv hlau tau muab faib ua ntau theem. Txhua qib sib txawv, thiab feem ntau muaj qhov sib txawv ntawm qhov zoo. Yog li ntawd, txhawm rau txiav txim siab qhov zoo ntawm qhov zoo, cov chaw tsim khoom yuav tsum qhia cov ntaub ntawv pov thawj zoo, thiaj li paub txog qib ntawm qib. Hauv qhov kev sib piv no, peb tuaj yeem pom tias qhov zoo sib txawv.
Thaum ua cov kav dej loj-diameter kauv hlau, kev kho saum npoo yog txheej txheem tseem ceeb. Txhawm rau kom ntseeg tau qhov zoo ntawm cov yeeb nkab steel, qhov kev kho saum npoo yuav tsum nruj dua thaum tawm hauv lub Hoobkas kom ntseeg tau tias qhov zoo thiab corrosion kuj. Loj, cov neeg siv khoom xaiv yuav tseem txawv.
