(1) Qhov sib txawv ntawm kev ua haujlwm kub thiab kev ua haujlwm txias: kub dov yog ua haujlwm kub, thiab txias txias yog ua haujlwm txias.Lub ntsiab sib txawv: kub dov yog dov saum toj no lub recrystallization kub, txias dov yog dov hauv qab no lub recrystallization kub;txias dov yog qee zaum rhuab, tab sis qhov kub thiab txias yog qhov qis, vim tias qhov kev ua haujlwm tshwm sim tom qab txias dov Hard, yog tias cov khoom tsim cov kev xav tau siab heev, nws yuav tsum tau annealed.

Cold-dov thiab kub-dov yog feem ntau daim hlau los yog profiles, thaum txias-draw yog feem ntau cylindrical cross-section xov hlau.Tsis tas li ntawd, cov phaj kub-dov feem ntau yog cov hlau uas muaj cov ntsiab lus siab dua thiab muaj zog dua, thaum cov hlau txias-kuav los tiag yog cov pa roj carbon tsawg thiab cov hlau tsis tshua muaj hlau.Txias dov tuaj yeem ua kom lub zog thiab ua kom lub ntsej muag zoo ntawm cov khoom.

Qhov sib txawv ntawm txias-draw seamless steel yeeb nkab thiab kub dov seamless steel yeeb nkab yog txawv ntawm cov phaj.

Seamless steel kav yog muab faib ua kub dov (extruded) seamless steel kav thiab txias-draw (dov) seamless steel kav vim lawv txawv manufacturing txheej txheem.

Cold drawn steel kav feem ntau yuav tsum tau kos ntau zaus, thiab yuav tsum muaj kev sib raug zoo ntawm kev ntxhov siab annealing ntawm txhua daim duab los xyuas kom meej qhov kev vam meej ntawm qhov txias txias tom ntej.Los ntawm cov tsos, txias-dov seamless steel kav feem ntau me me nyob rau hauv txoj kab uas hla, thiab kub dov seamless steel kav yog feem ntau ntawm txoj kab uas hla.Qhov tseeb ntawm cov yeeb nkab txias-dov seamless steel yeeb nkab yog siab dua li ntawm cov yeeb nkab kub-dov seamless steel yeeb nkab, thiab tus nqi kuj tseem siab dua li cov yeeb nkab kub-dov seamless steel yeeb nkab.Cold drawn seamless pipes feem ntau muaj me me, feem ntau hauv qab 127mm, tshwj xeeb tshaj yog cov precision ntawm sab nraud txoj kab uas hla ntawm txias drawn seamless kav yog siab heev, thiab qhov ntev ntawm txias drawn seamless kav feem ntau luv dua li ntawm kub dov seamless kav.Nyob rau hauv cov nqe lus ntawm phab ntsa thickness, txias-draw seamless kav yog ntau yam zoo li kub dov seamless kav.