Khaub thuas kos qis carbon hlau xaim rau kev tsim kho tau muab faib ua A thiab B ob qib. Qib A cov hlau hlau feem ntau yog siv rau cov hlau tsis muaj zog ntawm cov khoom me me ua kom muaj zog; Qib B cov hlau hlau feem ntau yog siv rau kev vuam lossis txuas cov pob txha, cov meshes lossis cov pob zeb.
Khaub thuas kos cov pa roj carbon hlau tsawg feem ntau yog siv rau cov khoom me me uas muaj zog tshaj plaws, xws li kab teeb, hollow pem teb slabs, tus ncej hluav taws xob me me, thiab purlins, qhov rooj thav duab thiab qhov rai thav duab hauv cov tsev nyob deb nroog.
Kev loj hlob ntawm cov hlau tsis sib xws ua rau lub lattice slippage thiab ua rau lub zog nce ntxiv, thaum qhov kev ncua ntev, uas qhia txog cov khoom yas, txo qis dua. Cov hlau hlau siv los ua cov khoom ua vaj tsev zoo yuav tsum tau kos nrog rau qib A No. 3 steel lossis No. 4 steel kub kuav los tiag hlau Lub zog ntawm cov hlau hlau no feem ntau yog nyob ntawm lub zog ntawm cov khoom siv raw (kub-kuav los tiag hlau) thiab tag nrho cov deformation tom qab kos duab. Kev tshem tawm kuj tseem yog qhov ntsuas tseem ceeb rau kev ntsuas nws qhov zoo. Yog tias qhov kev ncua me me dhau, nws yuav ua rau cov tswv cuab muaj zog txhawb nqa nrog nws kom ua rau lub cev tsis ua haujlwm yam tsis muaj qhov deformation tseem ceeb. Yog li ntawd, daim duab kos yuav tsum raug xaiv kom tsim nyog thaum kos duab. , Kom ntseeg tau tias cov yas ntawm cov hlau hlau. Cov hlau hlau uas siv los ua cov khoom siv ua vaj tsev zoo yuav tsum raug kuaj ib qho los ntawm ib qho rau kev tshuaj xyuas kev ua haujlwm zoo, thiab qib thiab pawg yuav tsum raug txiav txim siab raws li qhov yuav tsum tau ua, thiab kev siv yuav tsum tau npaj kom tsim nyog.
