Hauv kev tsim kho niaj hnub no, rebar yog qhov tseem ceeb tshaj plaws, ua lub luag haujlwm tseem ceeb hauv txhua yam los ntawm cov skyscrapers ntauwd mus rau txoj kev taug kev. Nws cov khoom tshwj xeeb ntawm lub cev ua rau nws yog ib qho tseem ceeb hauv kev ua kom muaj kev ruaj ntseg hauv tsev thiab kav ntev.
Rebar, lub npe nrov rau kub-dov ribbed steel tuav, muab nws lub npe los ntawm ribbed nto. Nws cov hlaws feem ntau yog ncig, nrog ob lub tav tav ntev thiab sib npaug sib npaug ntawm cov tav tav raws nws qhov ntev. Lub transverse tav yog crescent-puab thiab tsis cuam tshuam nrog longitudinal tav. Qhov kev ntxhib los mos ntawm qhov chaw no tsis yog tsuas yog ntxiv dag zog rau kev sib raug zoo ntawm cov rebar thiab pob zeb, tab sis kuj tseem txhim kho nws lub zog tensile thiab kev ruaj ntseg nyob rau hauv lub tsev. Rebar feem ntau yog tsim los ntawm cov qauv hlau los yog cov hlau tsis tshua muaj hlau thiab tuaj nyob rau hauv ntau txoj kab uas hla, los ntawm 6 hli mus rau 50 hli, kom haum rau ntau lub tsev yuav tsum tau ua.
Rebar muaj cov khoom siv zoo tshaj plaws, siv tag nrho cov khoom siv hlau thaum lub sij hawm nro, ua rau nws zoo dua li qub rebar. Nws nto yog kho los ua ib txheej oxide tuab, uas muab kev tiv thaiv corrosion thiab ncua nws lub neej kev pab cuam. Nws tseem tuaj yeem txiav tau yooj yim rau qhov ntev uas xav tau los ntawm kev siv tshuab, ua kom yooj yim rau kev tsim kho.
Rebar yog categorized nyob rau hauv ntau txoj kev. Raws li Suav tus qauv (GB1499), rebar muab faib ua peb qib raws li lub zog (yield point / tensile lub zog): HRB335, nrog lub zog ntawm 335 MPa, haum rau cov qauv hauv tsev; HRB400, nrog lub zog ntawm 400 MPa, haum rau cov qauv coj cov khoom hnyav dua; thiab HRB500, nrog lub zog ntawm 500 MPa, muab tshwj xeeb siab tensile thiab torsional lub zog, haum rau tshwj xeeb engineering tej yaam num. Rebar tuaj yeem muab faib ua cov qib kub-dov thiab txias-dov raws li nws txoj kev tsim khoom. Kub dov rebar yog tsim los ntawm nruam nruam los yog pib dov steel los xij, muab qhov zoo xws li lub zog siab, zoo ductility, thiab zoo heev adhesion rau pob zeb. Cold-rolled rebar, ntawm qhov tod tes, yog tsim los ntawm cov kub dov coils, pickled kom tshem tawm nplai, thiab ces txias-dov. Nws kuj pom muaj lub zog siab, zoo ductility, thiab muaj zog daim ntawv cog lus nrog pob zeb. Los ntawm daim ntawv thov, nws tuaj yeem muab faib ua cov rebar zoo tib yam rau cov pob zeb ua kom muaj zog thiab cov cua sov kho rebar rau prestressed pob zeb.
Rebar yog siv nyob rau hauv ntau yam kev tsim kho thiab engineering teb. Hauv kev tsim vaj tsev, feem ntau yog siv los txhawb thiab txuas cov kab teeb, kab, kab, slabs, thiab lwm yam khoom siv hauv cov pob zeb ua vaj tse, txhim kho lawv cov kev ruaj ntseg thiab kev thauj khoom muaj peev xwm. Hauv kev tsim vaj tsev hauv pej xeem, nws ua haujlwm raws li kev txhawb nqa thiab kev sib txuas cov khoom siv hauv cov txuas hniav, tunnels, thiab txoj kev loj, txhim kho lawv cov kev ruaj ntseg thiab seismic tsis kam. Nyob rau hauv railway engineering, nws yog siv rau kev ruaj ntseg thiab txuas rails, kom ntseeg tau tias kev ua haujlwm du. Hauv kev mining, nws feem ntau yog siv los ua cov khoom siv txhawb zog thiab kev txhawb nqa, txhawb nqa kuv lub ru tsev thiab phab ntsa. Nws yog txawm siv nyob rau hauv architectural kho kom zoo nkauj los tsim cov khoom zoo nkauj xws li handrails, railings, thiab stairways, combining aesthetics nrog durability.
Rebar ntau lawm yuav tsum tau ua kom muaj kev txuas ntxiv ntawm txhua tus txheej txheem. Cov txheej txheem feem ntau muab faib ua hlau ua, steelmaking loj, thiab ua tiav. Cov thev naus laus zis tseem ceeb suav nrog kev kho cua sov tom qab dov, nplua-grained steel ntau lawm, slitting thiab dov, thiab holeless dov.
Rebar tseem tuav txoj haujlwm tseem ceeb hauv kev ua lag luam. Nws yog ib qho tseem ceeb qhia txog kev tsim kho kev lag luam txoj kev loj hlob, thiab nws cov nqi hloov pauv muaj kev cuam tshuam ncaj qha rau cov tuam txhab sab saud thiab qis hauv cov saw hlau kev lag luam. Rau cov neeg tsim khoom steel, nce nqi rebar txhais ua cov txiaj ntsig siab dua; rau cov tuam txhab tsim kho qis thiab cov tsim vaj tsev, cov nqi hloov pauv ncaj qha cuam tshuam cov nqi tsim kho. Xyoo 2023, kuv lub teb chaws tus nqi rebar hloov pauv ntawm 3,600 thiab 4,500 yuan / tuj, nce siab thaum nruab nrab Lub Peb Hlis. Txij lub Peb Hlis mus txog rau lub Tsib Hlis lig, cov ntaub ntawv vaj tsev tau poob qis ntawm kev cia siab ntawm kev ua lag luam. Ua ke nrog kev poob qis hauv cov nqi hluav taws xob hauv tsev tom qab qhov kev daws teeb meem ntawm lub zog hluav taws xob txawv teb chaws, tus nqi rebar poob sai heev. Thaum lub Kaum Ib Hlis, ntau txoj cai, suav nrog cov cuam tshuam txog trillion-yuan tsoomfwv cov nyiaj thiab vaj tse, txhawb kev lag luam kev xav tau zoo thiab ua rau muaj kev rov qab los ntawm tus nqi rebar. Lub caij no, huab cua zoo nyob rau yav qab teb kev lag luam tau ua rau qee qhov kev ua haujlwm nrawm, tab sis tag nrho cov kev xav tau tseem muaj zog. Nyob rau lub Kaum Ob Hlis, tau tsav los ntawm kev nce nqi raw khoom thiab macroeconomic txoj cai, tus nqi rebar hloov pauv nyob ib ncig ntawm 4,100 yuan / ton, mus txog 4,090.3 yuan / ton rau lub Kaum Ob Hlis 29th.
Rebar, lub hauv paus ruaj khov rau kev tsim kho cov haujlwm, ci ntsa iab thoob plaws ntau yam ua tsaug rau nws cov yam ntxwv tshwj xeeb, cuam tshuam rau kev tsim kho kev lag luam. Nws yuav hloov zuj zus mus ntxiv nrog kev nce qib hauv kev lag luam thiab kev lag luam.
Post lub sij hawm: Aug-18-2025