Lub luag haujlwm tseem ceeb ntawm cov hlau yog ua cov khoom siv tsev thiab khoom siv, siv dav hauv ntau yam qauv thiab khoom siv.
p>Hlau yog ib qho khoom siv los ntawm kev ua siab, nrog cov duab tshwj xeeb, ntau thiab tsawg, thiab cov khoom. Nws yog suav nrog cov profiles, daim hlau, kav dej, uas tuaj yeem faib ua ob hom: txias ua raws li kev ua haujlwm sib txawv. Qhov kev thov cuam tshuam ntawm cov hlau los ntawm nws tus nqi qis thiab txhim khu kev qha, ua nws ib qho ntawm cov khoom siv ntawm lub neej niaj hnub. Hauv qab no yog cov ntawv thov tshwj xeeb ntawm cov hlau hauv cov teb sib txawv:
1. Cov ntaub ntawv tsim tsev: Hlau ua si lub luag haujlwm tseem ceeb hauv kev tsim kho cov kab ke, suav nrog cov chaw tsim khoom, nrog rau cov neeg tsim khoom, cov choj Highering, cov tsheb choj, nkoj, thiab khoom lag luam.
2. Neeg kho tshuab tsim: steel tseem muaj dav nyob rau hauv kev tsim kho tshuab, suav nrog kev tsim khoom siv tshuab lossis cov khoom siv square yog siv los tsim ntau yam qauv thiab cov khoom siv kho tshuab.
3. Cov nkoj siab thiab cov khoom siv tshwj xeeb: xws li cov hlau nplaum hom hlau rau cov khoom siv siab, yog siv los tsim cov khoom siv siab thiab tshuaj lom neeg roj thiab tsheb thauj khoom. Cov hlau no yuav tsum muaj lub zog zoo, lub zog, muaj zog, nrog rau kev sib tsoo thiab kev ua haujlwm sib tsoo.
4. Tsheb thauj mus los: steel tseem muaj daim ntawv thov tseem ceeb hauv kev thauj mus los, suav nrog kev tsim nkoj, tsheb, tsheb nqaj hlau, thiab chaw tsheb nqaj hlau. Piv txwv li, lub kaum ntse ntse loj siv nyob rau hauv cov qauv loj xws li cov chaw tsim khoom, cov tuam tsev muaj, tsheb thauj mus los, thiab nkoj.