1. Dab tsi yog cov ntawv thov rau S275JR steel kav?
Teb:S275JR cov kav dej tau siv dav hauv cov qauv siv dav dav uas lub zog siab tsis yog qhov tseem ceeb. Common siv muaj xws li:
Cov qauv tsim rau cov tsev thiab warehouses
Mechanical thiab tsheb thav duab
Fencing, handrails, thiab scaffolding
General - kis tau tus mob kua
2. Hom yeeb nkab twg yog tsim los ntawm S275JR steel?
Teb:S275JR feem ntau yog siv los tsim ob qho tib siSeamless (SMLS) kav(EN 10210-1) thiabWelded kav(EN 10219-1), xws li Electric Resistance Welded (ERW) kav, uas yog siv rau cov qauv hollow seem.
3. S275JR txawv ntawm S235JR li cas?
Teb:Qhov sib txawv tseem ceeb yog lub zog. S275JR muaj lub zog qis dua qhov qis dua (275 MPa vs . 235 MPa rau S235JR tsawg dua lossis sib npaug li 16 hli thickness). Qhov no ua rau S275JR muaj zog dua thiab feem ntau tso cai rau cov qauv sib dua. Cov tshuaj muaj pes tsawg leeg kuj txawv me ntsis, nrog S275JR feem ntau muaj me ntsis siab dua carbon thiab manganese txwv.
4. Puas yog S275JR steel yeeb nkab tiv thaiv corrosion?
Teb:Tsis yog, S275JR yog cov pa roj carbon steel thiab tsis muaj qhov tseem ceeb corrosion kuj. Nws yuav xeb thaum raug ya raws thiab huab cua. Rau corrosive ib puag ncig, kev tiv thaiv kev ntsuas xws li pleev xim, galvanizing (zinc txheej), lossis siv cov khoom sib txawv xws li cov hlau tsis muaj steel yog tsim nyog.
5. Cov qauv dab tsi npog S275JR steel kav?
Teb:Cov txheej txheem tseem ceeb ntawm cov khoom siv yogTS EN 10025-2. Cov qauv khoom tshwj xeeb rau cov kav dej ua los ntawm S275JR yog:
TS EN 10210-1 & 2:Rau kub- tiav seamless thiab welded structural hollow seem.
TS EN 10219-1 & 2:Rau txias-tsim welded structural hollow seem.
