Kub dov ribbed steel rebar

Thickness: 6-40 hli
Txheej Txheem: Kub Rolled, Ribbed, Rounded, Alloy
Rebar yog ib lub npe nrov rau kub dov ribbed steel tuav. Qib ntawm qhov kub-kuav los tiag steel bar muaj HRB thiab qhov tsawg kawg nkaus yield point ntawm qib. H, R, thiab B yog Hotrolled, Ribbed, thiab Bars feem.
Muaj ob txoj hauv kev uas feem ntau siv rau kev faib cov rebar: ib qho yog muab faib los ntawm cov duab geometric, thiab muab faib los yog ntaus ntawv raws li cov duab ntoo khaub lig ntawm txoj kab rov tav thiab qhov sib nrug ntawm cov tav. Hom II. Qhov kev faib tawm no feem ntau qhia txog kev ua haujlwm ntawm lub rebar. Qhov thib ob yog raws li kev ua tau zoo (qib), xws li kuv lub teb chaws tus qauv siv tam sim no, rebar yog (GB1499.2-2007) hlau yog 1499.1-2008), raws li qib zog (yield point / tensile zog) Lub rebar yog muab faib ua 3 qib; nyob rau hauv Japanese Industrial Standard (JI SG3112), lub rebar muab faib ua 5 hom raws li kev ua tau zoo; nyob rau hauv British Standard (BS4461), ob peb qib ntawm rebar kev xeem ntawv kuj tau teev tseg. Tsis tas li ntawd, cov rebars kuj tuaj yeem raug cais raws li lawv cov kev siv, xws li cov hlau zoo tib yam rau cov pob zeb ua kom muaj zog thiab cov khoom siv hluav taws xob kho cua sov rau cov pob zeb ua kom muaj zog.
Qhov ntev
1) Nominal diameter ntau thiab pom zoo txoj kab uas hla
Qhov nominal txoj kab uas hla ntawm steel tuav yog li ntawm 6 mus rau 50 hli, thiab tus qauv pom zoo nominal diameters ntawm steel tuav yog 6, 8, 10, 12, 14, 16, 20, 25, 32, 40, thiab 50mm.
2) Qhov tso cai sib txawv ntawm cov duab saum npoo thiab qhov loj ntawm ribbed steel bar
Cov qauv tsim ntawm transverse tav ntawm ribbed steel tuav yuav tsum ua raws li cov hauv qab no:
Lub kaum sab xis β ntawm txoj kab nruab nrab ntawm txoj kab nruab nrab thiab lub axis ntawm lub steel bar yuav tsum tsis pub tsawg tshaj 45 degrees. Thaum lub kaum sab xis tsis siab tshaj 70 degrees, qhov kev taw qhia ntawm txoj kab nruab nrab ntawm lub qhov rooj sab nraud ntawm lub steel bar yuav tsum sib txawv;
Qhov nominal spacing l ntawm transverse tav yuav tsum tsis txhob ntau tshaj 0.7 npaug ntawm nominal txoj kab uas hla ntawm steel bar;
Lub kaum sab xis α nruab nrab ntawm sab ntawm txoj kab nruab nrab thiab qhov chaw ntawm cov hlau yuav tsum tsis pub tsawg dua 45 degrees;
Qhov sib npaug ntawm qhov khoob (nrog rau qhov dav ntawm qhov ntev ntawm cov tav) nruab nrab ntawm qhov kawg ntawm cov kab hla hla ntawm ob sab ntawm cov hlau bar yuav tsum tsis txhob ntau tshaj 20% ntawm qhov nominal perimeter ntawm steel bar;
Thaum lub nominal txoj kab uas hla ntawm lub steel bar tsis ntau tshaj 12 hli, tus txheeb ze tav cheeb tsam yuav tsum tsis txhob tsawg tshaj li 0.055; Thaum lub nominal txoj kab uas hla yog 14mm thiab 16mm, qhov txheeb ze tav cheeb tsam yuav tsum tsis txhob tsawg tshaj li 0.060; thaum lub nominal txoj kab uas hla yog ntau tshaj 16 hli, tus txheeb ze rib cheeb tsam yuav tsum tsis txhob tsawg tshaj li 0.065. Xa mus rau Daim Ntawv Cuam Tshuam C rau kev suav ntawm thaj tsam ntawm tus tav.
Ribbed steel tuav feem ntau muaj cov tav tav ntev, tab sis kuj tsis muaj qhov ntev ntev;
3) Ntev thiab tso cai sib txawv
a. Ntev
Cov hlau tuav feem ntau yog xa mus rau qhov ntev, thiab qhov tshwj xeeb xa khoom ntev yuav tsum tau qhia hauv daim ntawv cog lus;
Kev txhawb nqa tuaj yeem xa tuaj rau hauv cov coils, thiab txhua lub reel yuav tsum yog ib qho rebar, tso cai rau 5% ntawm tus lej ntawm cov reels hauv txhua pawg (ob lub reels yog tsawg dua ob) uas muaj ob lub rebars. Qhov hnyav disk thiab txoj kab uas hla yog txiav txim siab los ntawm kev sib tham ntawm tus neeg muag khoom thiab tus neeg yuav khoom.
b, ntev kam rau ua
Qhov tso cai sib txawv ntawm qhov ntev ntawm cov hlau bar thaum nws raug xa mus rau qhov ntev yuav tsum tsis txhob siab tshaj ± 25mm;
Thaum qhov tsawg kawg nkaus yuav tsum tau, nws deviation yog +50mm;
Thaum qhov ntev tshaj plaws yuav tsum tau, qhov sib txawv yog -50mm.
c, curvature thiab xaus
Qhov kawg ntawm steel bar yuav tsum tau sheared ncaj, thiab lub zos deformation yuav tsum tsis txhob cuam tshuam rau kev siv