Cov ntsia hlau, uas yog, cov ntsia hlau cement.
Cov ntsia hlau ntsia hlau, feem ntau hu ua ntsia hlau ntsia hlau, yog ib hom ntsia hlau, siv cov pa roj carbon steel ntau lawm, cov khoom muaj 45 steel lossis 60 steel, tom qab kos duab, annealing, ntsia thawv tsim, quenching thiab lwm yam txheej txheem, yog li qhov kev ntxhib los mos yog tawv.Nws txoj haujlwm yog txhawm rau ntsia hlau rau qee qhov nyuaj rau tes tsis tuaj yeem ntsia hlau ntawm cov khoom, vim tias cov khoom siv thiab cov ntsia hlau zoo sib txawv heev, yog cov ntsia hlau tshwj xeeb.Lub hardness ntawm pob zeb rau tes yog loj heev, tuab thiab luv, thiab lub peev xwm rau punch yog muaj zog heev.
Kev faib tawm: cov ntsia hlau muaj ntau yam ntsia hlau shank, grooved, twill, kauv, xyoob, thiab lwm yam, feem ntau yog grooved shank lossis zawv zawg shank.
Raws li kev faib tawm sib txawv, cov ntsia hlau tseem tuaj yeem muab faib ua: cov ntsia hlau galvanized, cov ntsia hlau dub, cov ntsia hlau xiav, cov ntsia hlau xim, cov ntsia hlau countersunk pob zeb, K-lus pob zeb rau tes, T-lo lus pob zeb rau tes thiab lwm yam.
