Hauv kev lag luam steel hlau, muaj cov kav hlau thiab cov kav hlau.Nyob rau saum npoo, cov khoom no yuav zoo sib xws, tab sis lawv qhov tseeb txawv kiag li.

Cov kav hlau thiab cov kav hlau tsis muaj kev siv tib yam.Lawv txawv ntawm daim ntawv thov thiab qhov loj me.Cov kav hlau thiab cov kav dej ob leeg ua rau lub hollow cylindrical zoo.Txawm li cas los xij, qhov no yog qhov zoo sib xws feem ntau xaus.

Qhov sib txawv
Muaj ntau qhov sib txawv ntawm cov kav hlau thiab cov raj.Ua ntej, lawv muaj qhov sib txawv diameters uas ntsuas qhov sib txawv.Thaum txiav txim siab qhov loj me, nws yog ib qho tseem ceeb uas yuav tsum nco ntsoov tias cov kav dej raug suav nrog hauv txoj kab uas hla.

Cov raj yog xam los ntawm sab nraud txoj kab uas hla.Cov kav hlau ua kom haum rau cov ntawv loj dua thiab cov raj feem ntau ua haujlwm me me.

Lwm qhov txawv ntawm qhov tseem ceeb yog cov duab thiab phab ntsa thickness.Feem ntau, cov kav hlau steel tau muab nkag rau hauv cov ntu puag ncig.Tubes tuaj yeem ua puag ncig ib yam, tab sis lawv tuaj yeem ua square thiab duab plaub.

Paub txog cov yam tseem ceeb no yog qhov tseem ceeb vim tias nws cuam tshuam ncaj qha rau phab ntsa thickness.Kev suav cov phab ntsa tuab pab txiav txim siab lub zog ntawm cov yeeb nkab steel lossis lub raj.Lub zog ntawm txhua cov yeeb nkab steel los yog raj muaj feem xyuam rau nws txoj kev siv.

Kev kam rau siab thiab kev thov
Qhov sib txawv tseem ceeb ntawm cov kav hlau thiab cov kav hlau yog qhov ua siab ntev thiab cov txheej txheem thov.Feem ntau, cov kav dej thauj lossis faib cov pa roj thiab kua.Yog li ntawd, nws yog ib qho tseem ceeb kom paub lub peev xwm thiab kam rau siab ntawm cov yeeb nkab.

Cov raj steel yog siv rau kev tsim qauv.Lawv yog siv los tsim pivots hauv kev lag luam ua liaj ua teb, piv txwv li.

Cov txheej txheem tsim khoom ua si lub luag haujlwm loj hauv qhov sib txawv thiab.Tsis tu ncua, cov raj xav tau ntau qhov tob ntawm cov txheej txheem, kev sim, thiab kev tshuaj xyuas.

Qhov no ncua txoj kev faib khoom.Ntawm qhov tod tes, cov ntawv thov steel yeeb nkab tau siv tau ntau dua thiab feem ntau dhau los ua ntau lawm.

Tsis tas li ntawd, kev tsim cov raj steel yog kim dua vim lawv xav tau kev ua haujlwm hnyav, lub zog, thiab cov khoom siv.Kev tsim cov kav dej yog tswj tau ntau dua, txiav cov nqi ntawm cov khoom.

Khoom siv
Cov khoom siv los ua txhua lub yeeb nkab sib txawv, ua rau tus nqi nce.Cov pa roj carbon steel thiab cov hlau tsis tshua muaj hlau feem ntau ua cov kav dej.Meanwhile, tubes tuaj yeem ua los ntawm:

Hlau
Aluminium
tooj dag
Tooj
Chrome
Stainless hlau
Lwm qhov txawv yog cov tshuaj pleev ib ce ntawm txhua yam khoom.Cov ntsiab lus tseem ceeb ntawm cov kav dej yog:

Cov pa roj carbon
Manganese
Sulfur
Phosphorus
Silicon.
Raws li rau cov raj, cov khoom me me yog qhov tseem ceeb tshwj xeeb rau qhov zoo thiab cov txheej txheem.

Kev paub txog qhov sib txawv ntawm cov kav hlau thiab cov kav hlau yog ib qho kev txawj tsim nyog rau cov neeg tsim khoom hauv kev lag luam.Ntau yam, xws li txoj kab uas hla, qauv, phab ntsa thickness, siv, nqi, thiab cov khoom siv, txhua yam pab kom paub qhov txawv cov ntsiab lus.