S275JR lub kaum sab xis steel, tsim nyob rau hauv nruj raws li cov qauv ASTM thiab muaj nyob rau hauv ob qho tib si galvanized thiab tsis yog -galvanized variants, yog ib tug siab -kev ua tau zoo structural tivthaiv lug siv nyob rau hauv industrial siv, infrastructure engineering, machinery manufacturing, thiab kev cai fabrication. Raws li cov khoom lag luam zoo tshaj plaws steel, nws koom ua ke cov khoom siv dag zog ntawm S275JR qib, ua raws li cov qauv thoob ntiaj teb ASTM, thiab xaiv galvanization rau kev txhim kho durability, ua rau nws muaj kev ntseeg siab thiab muaj ntau yam kev xaiv rau ntau yam load-cov kabmob, txhawb nqa, thiab txuas cov ntawv thov thoob plaws ntiaj teb.
Ob qhov sib txawv ntawm lub kaum sab xis steel-galvanized thiab tsis yog-galvanized- yog tsim los ntawm S275JR, European tus qauv (EN 10025) cov qauv steel qib uas tau ua tiav nrog ASTM cov qauv, ua kom zoo ib yam thiab ua tau zoo rau cov haujlwm thoob ntiaj teb. S275JR yog cais raws li cov hlau tsis yog{7}} alloy structural steel, featuring ib tug tshuaj lom neeg muaj pes tsawg leeg uas muab kev sib npaug txhua yam khoom: qhov tsawg kawg nkaus yield zog ntawm 275 MPa, tensile lub zog ntawm 370 mus rau 510 MPa, thiab zoo heev tej yam toughness (27J ntawm 20 degree). Qhov kev sib xyaw ua ke ntawm lub zog thiab ductility ua kom lub kaum sab xis steel tuaj yeem tiv taus qhov nruab nrab mus rau qhov hnyav, kev nyuaj siab, thiab kev sib txawv ntawm ib puag ncig, thaum tswj kev weldability zoo, machinability, thiab formability rau kev yooj yim fabrication thiab sib dhos.
S275JR ASTM Standard Angle Bar Steel (tsis yog -galvanized variant) yog tsim los ntawm cov txheej txheem kub kub- dov, uas ua kom zoo dua nws cov qauv kev ntseeg siab thiab qhov tseeb qhov tseeb. Steel billets ntawm S275JR yog rhuab mus rau ib tug tswj kub ntawm kwv yees li 1200℃- saum toj no lub recrystallization kub- kom soften cov khoom, ces raug mus rau ntxhib dov los ua classic L-zoo li tus ntoo khaub lig-section (muaj nyob rau hauv ob qho tib si sib npaug thiab tsis sib npaug txhais ceg configurations), yog raws li cov kev sib npaug thiab tsis sib npaug ceg, ua raws li cov txheej txheem tuab. txoj cai- kaum qhov ntev (90 degrees), thiab ua kom tiav qhov chaw du. Tom qab- dov, lub kaum sab xis ntawm lub kaum sab xis tau tswj xyuas kom txias kom zoo dua cov qauv nplej, tshem tawm cov kev ntxhov siab sab hauv, thiab txhim kho tag nrho cov tawv nqaij, ua kom txhua pawg ua tau raws li qhov xav tau nruj ntawm ASTM cov qauv rau cov qauv hlau.
S275JR ASTM Standard Galvanized Angle Bar Steel tsim raws li qhov tsis yog -galvanized variant lub zog los ntawm kev ntxiv cov txheej txheem kub -dip galvanization, uas ua rau txhim khu kev tiv thaiv corrosion. Cov txheej txheem galvanization yuav immersing lub kub- dov lub kaum sab xis steel nyob rau hauv ib da dej ntawm molten zinc, ua ib tug uniform, adherent zinc txheej uas ua raws li ib tug tiv thaiv kev tiv thaiv ntawm ya raws, tshuaj, thiab ib puag ncig hnav. Cov txheej no tsis yog tsuas yog txuas ntxiv lub neej kev pabcuam ntawm lub kaum sab xis steel nyob rau hauv ib puag ncig hnyav (xws li thaj chaw ntug dej hiav txwv, chaw tsim khoom nruab nrab, thiab sab nraum zoov kev tsim kho) tab sis kuj txo cov nqi tu thiab ua kom ntev - lub sij hawm kev ruaj ntseg.
Ob qho tib si galvanized thiab tsis yog -galvanized S275JR ASTM tus qauv lub kaum sab xis steel muaj ntau yam L-zoo li tus ntoo khaub lig- ntu, muaj nyob rau hauv qhov sib npaug thiab tsis sib npaug ceg teeb tsa kom haum rau ntau yam kev xav tau. Lub kaum sab xis ntawm lub kaum sab xis steel muaj cov ceg sib npaug ntawm qhov ntev thiab qhov tuab, ua kom muaj kev sib txig sib luag thiab cov txheej txheem muaj zog rigidity-zoo tagnrho rau cov khoom sib npaug-cov kabmob xws li lub tsev thav duab, lub ru tsev trusses, lub hauv paus kev txhawb nqa, thiab cov qauv kev sib tw dav dav. Lub kaum sab xis ntawm lub kaum sab xis steel muaj ob txhais ceg ntawm qhov ntev sib txawv, muab kev taw qhia lub zog thiab hloov tau yooj yim, haum rau cov qauv tshwj xeeb - zoo li tus qauv, asymmetric txhawb nqa tshuab, thiab txuas cov khoom siv hauv kev lag luam thiab engineering.
nruj me ntsis raws li ASTM cov qauv (raws li EN 10025 rau S275JR), ob qho tib si variants xyuas kom meej qhov ntev, cov khoom sib xws, thiab kev ua tau zoo sib xws ntawm cov khoom siv. Lawv cov kev qhia tshwj xeeb suav nrog ntau yam kom tau raws li qhov xav tau ntawm ntau qhov project: ceg ntev li ntawm 20mm txog 200mm, thicknesses ntawm 3mm mus rau 24mm, thiab cov qauv ntev ntawm 6m, 9m, lossis 12m. Customized ntau thiab tsawg, suav nrog ceg ntev, tuab, thiab txiav ntev, kuj muaj los hloov kho rau cov qauv tsim tshwj xeeb, ntxiv dag zog rau lawv cov versatility.
