Nyob rau hauv xyoo tas los no, nrog kev txhim kho txuas ntxiv ntawm cov kav hlau loj-caliber spiral steel kav (SSAW) vuam txheej txheem, nws cov txheej txheem ua tau zoo thiab cov txheej txheem kev ua tau zoo yuav raug txhim kho. Yog li ntawd, qhov zoo ntawm lub Hoobkas kuj yuav txawv. Ntawm lawv, thaum cov hom ntawm cov kav dej uas muag hauv khw yog nce, qhov zoo yuav muaj qhov sib txawv loj heev. Yog li dab tsi txiav txim siab nws?
Yam 1: Cov khoom siv qib.
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.
Yam 2: Kev ua haujlwm zoo.
Ntawm chav kawm, thaum lub loj -caliber kauv steel yeeb nkab yog ua tiav nyob rau hauv txawv manufacturers, cov khoom thiab technologies qhia txawv, thiab qhov zoo thiab txheej txheem ntawm lub Hoobkas kuj yuav muaj qhov sib txawv loj heev. Yog li ntawd, nyob rau hauv tus txheej txheem ntawm kev sib piv, nws pom tau hais tias qhov zoo ntawm cov txheej txheem muag los ntawm manufacturers yuav siab dua nyob rau hauv kev ua lag luam, thiab cov neeg tau txais kev pom zoo kuj yuav zoo dua. Feem ntau, nyob rau hauv qhov kev sib piv no, peb yuav tsum tsim nyog tuav cov kev xav tau zoo kom qhov sib txawv ntawm qhov zoo tuaj yeem txiav txim siab.
Yam 3: Kev kho deg.
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.
Feem ntau hais lus, qhov zoo ntawm cov kav hlau loj-caliber kauv hlau yog qhov siab, thiab peb yam tsis tuaj yeem tsis quav ntsej. Tsuas yog kev sib piv tuaj yeem paub qhov zoo.
