Cov hlau kauj, tseem hu ua hlau kauj. Cov hlau yog dov los ntawm kev nias kub thiab nias txias. Txhawm rau kom yooj yim rau kev khaws cia thiab kev thauj mus los thiab ntau yam kev ua tiav. Cov kauj tsim yog feem ntau yog cov kauj kub-kuav thiab cov kauj txias-kuav. Cov kauj kub dov yog cov khoom ua tiav ua ntej billet recrystallization. Cov kauj txias dov yog cov txheej txheem tom qab ntawm cov kauj kub dov. Peb lub Hoobkas feem ntau tsim thiab ua haujlwm cov kauj txias dov. Cov kauj hlau, cov kauj xim coated thiab peb cov neeg siv khoom koom tes feem ntau xaj cov kauj hlau nrog qhov hnyav li 25-27t. Tuam Tshoj lub peev xwm tsim khoom kub dov txuas ntxiv nthuav dav, twb muaj ntau lub kab tsim khoom kub dov, thiab qee qhov project tab tom yuav raug tsim lossis muab tso rau hauv kev ua haujlwm. Piv txwv li, peb muag dx51d Z100 galvanized steel kauj zoo.

Cov ntawv yob xim yog ib yam khoom ua los ntawm cov phaj galvanized kub-dip, phaj zinc txhuas kub-dip thiab phaj electro galvanized. Tom qab kev kho ua ntej ntawm qhov chaw (kev tshem roj thiab kev hloov pauv tshuaj), ib lossis ntau txheej ntawm cov txheej organic raug txheej rau ntawm qhov chaw, thiab tom qab ntawd ci thiab khov. Nws yog lub npe tom qab cov hlau kauj xim coated nrog ntau yam xim ntawm cov txheej organic, uas hu ua xim coated kauj luv luv. Ntxiv nrog rau kev tiv thaiv txheej zinc, cov txheej organic ntawm cov txheej zinc ua lub luag haujlwm hauv kev npog thiab tiv thaiv cov hlau kauj xim coated nrog cov hlau kauj kub-dip ua cov khoom siv hauv paus, kom tiv thaiv cov hlau kauj tsis txhob xeb. Lub neej ua haujlwm yog li 1.5 npaug ntev dua li cov hlau kauj galvanized. Cov ntawv yob xim coated muaj qhov hnyav sib dua, zoo nkauj thiab kev ua tau zoo tiv thaiv xeb, thiab tuaj yeem ua tiav ncaj qha. Cov xim feem ntau muab faib ua grey dawb, xiav hiav txwv thiab liab cib. Nws yog siv rau hauv kev lag luam tshaj tawm, kev lag luam tsim kho, kev lag luam khoom siv hauv tsev, kev lag luam khoom siv hluav taws xob, kev lag luam rooj tog thiab kev lag luam thauj mus los.

Cov txheej siv rau hauv cov xim txheej yob yuav tsum xaiv cov resin tsim nyog raws li qhov chaw siv sib txawv, xws li polyester silicon hloov kho polyester, polyvinyl chloride yas sol, polyvinylidene chloride, thiab lwm yam. Cov neeg siv tuaj yeem xaiv raws li lub hom phiaj.