Thaum cov neeg yuav khoom thoob ntiaj tebASTM A572 Qib 50 H beam, ib qho ntawm cov lus nug feem ntau yog: dab tsi yog cov khoom sib npaug hauv lwm cov qauv xws li EN, JIS, lossis GB?
ASTM A572 Qib 50 H beam
Cov lus teb tsis yog ib qho yooj yim -rau- ib qho kev hloov pauv. Txawm hais tias ob peb lub hlau raug suav hais tias sib npaug rau A572 Qib 50 H beam, lawv txawv me ntsis ntawm cov tshuaj muaj pes tsawg leeg, lub zog tawm los, thiab cov qauv siv.
Hauv cov phiaj xwm thoob ntiaj teb, qhov feem ntau lees txais sib npaug yog S355 cov qauv hlau raws li tus qauv EN.
| Txuj | Qib sib npaug | Yield zog |
|---|---|---|
| ASTM (USA) | A572 Qib 50 | Ntau dua lossis sib npaug li 345 MPa |
| EN (Tebchaws Europe) | S355JR / S355J2 | Ntau dua lossis sib npaug li 355 MPa |
| JIS (Nyiv) | SIB 490 | Ntau dua lossis sib npaug li 325-355 MPa |
| GB (Tuam Tshoj) | Q345B / Q355B | Ntau dua lossis sib npaug li 345 MPa |
Los ntawm qhov kev sib piv no, koj tuaj yeem pom tias feem ntau A572 Qib 50 sib npaug poob hauv 345-355 MPa lub zog ntau yam, uas yog vim li cas lawv feem ntau suav hais tias hloov pauv tau hauv cov qauv siv.
Vim li cas S355 Yog Qhov Zoo Tshaj Plaws rau A572 Qib 50 H Beam
Ntawm tag nrho cov qauv thoob ntiaj teb, S355 steel (tshwj xeeb tshaj yog S355J2) yog qhov feem ntau siv hloov pauv rau A572 Gr50 H beam hauv Europe, Middle East, thiab Africa.
| Khoom | A572 Gr50 H Beam | S355J2 |
|---|---|---|
| Yield zog | Ntau dua lossis sib npaug li 345 MPa | Ntau dua lossis sib npaug li 355 MPa |
| Impact Test | Tsis tas yuav tsum tau ua | Yuav tsum tau ntawm -20 degree |
| Txuj | ASTM | TS EN 10025 |
Lub zog siab dua me ntsis ntawm S355 ua rau nws muaj txiaj ntsig zoo, tshwj xeeb tshaj yog nyob rau hauv cov haujlwm uas yuav tsum tau ua raws li European cov qauv.
Txawm li cas los xij, S355 feem ntau suav nrog cov kev ntsuas cuam tshuam nruj dua, uas tuaj yeem ua rau nws tsim nyog rau qhov qis - qhov kub thiab txias
.
Puas yog A572 Gr50 thiab S355 Hloov pauv tau?
Txawm hais tias ntau tus neeg yuav khoom kho lawv li qhov sib npaug, A572 Qib 50 H beam thiab S355 tsis zoo ib yam.
Qhov sib txawv tseem ceeb suav nrog:
- Txheem txheej txheem (ASTM vs EN)
- Impact test xav tau
- Tshuaj muaj pes tsawg leeg txwv
- Daim ntawv pov thawj thiab qhov project specifications
Hauv kev xyaum, kev hloov pauv yog ntau, tab sis nws feem ntau xav tau:
- Kev pom zoo engineer
- Tsim pov thawj
- Ua raws li cov cai hauv zos
Sib npaug hlau hauv Asia: SM490 thiab Q345 / Q355
Rau cov haujlwm hauv Asia, cov neeg yuav khoom feem ntau piv A572 Gr50 H beam nrog JIS thiab GB qauv.
| Qib | Thaj tsam | Ntsiab Feature |
|---|---|---|
| SIB 490 | Nyiv | Zoo weldability, dav siv hauv cov qauv |
| Q345B | Tuam Tshoj | Ib txwm sib npaug rau A572 Gr50 |
| Q355B | Tuam Tshoj | Hloov kho tus qauv nrog cov khoom zoo dua qub |
Ntawm cov no, Q355B tam sim no ze rau A572 Qib 50 ntawm kev ua tau zoo, tshwj xeeb tshaj yog tom qab Tuam Tshoj hloov kho nws cov qauv hlau.
Tswv yim Yuav Kev Pom Zoo: "Sib npaug" Tsis txhais hais tias "Ib yam"
Ib qho yuam kev hauv kev yuav khoom yog xav tias txhua qhov sib npaug coj zoo ib yam.
Hauv kev muaj tiag:
Cov hlau sib npaug sib npaug sib npaug sib npaug
Tab sis txawv ntawm daim ntawv pov thawj, toughness, thiab daim ntawv thov qauv
Piv txwv li:
Ib qhov project hauv Tebchaws Europe tuaj yeem tsis lees txais A572 txawm tias muaj zog sib tw
Ib qhov project hauv Teb Chaws Asmeskas yuav xav tau daim ntawv pov thawj ASTM nruj
A572 Qib 50 H Beam sib npaug rau dab tsi?
ASTM A572 Qib 50 H beam feem ntau sib npaug rau:
- S355JR / S355J2 (EN txuj)
- SM490 (JIS tus qauv)
- Q345B / Q355B (tus qauv GB)
Ntawm cov no, S355 yog qhov ze tshaj plaws thiab feem ntau lees paub thoob ntiaj teb sib npaug.
Hu rau tam sim no kom tau txais A572 Gr.50 H Beam Quote
A572 puas yooj yim rau vuam?
A572-50 steel tuaj yeem welded nrog cov txheej txheem yooj yim thiab cov khoom siv xws li E7018 vuam pas nrig.
Dab tsi yog qhov flatness kam rau ua rau astm A572 Qib 50?
Thickness, dav thiab ntev kam rau ua rau A572, Qib 50 daim hlau yog raws li ASTM A6. ASTM A6 Ib nrab-Standard Flatness kam rau ua yog muaj rau cov phaj tuab ntawm 3/8 nti rau 3.0 nti. Nug rau qhov tshwj xeeb mill flatness peev xwm.
Dab tsi yog qhov txawv ntawm A709 GR 50 thiab A572 GR 50?
A572 Qib 50 muaj ntau C thiab siab dua me ntsis Mn ntsiab lus. Whereas, A709 gr50 daim hlau muaj cov alloying ntxiv. A572 Qib 50 yog siv dav hauv kev tsim kho thiab kev siv engineering. Txawm li cas los xij, ASTM A709 qib 50 daim hlau yog siv hauv kev tsim choj thiab lwm yam kev siv cov qauv.
Dab tsi yog qhov txawv ntawm astm A572 GR 50 thiab S355J2?
*ASTM A572 Gr. 50 yuav tsum tau Charpy V- ntsuas ntsuas tsuas yog tias tau teev tseg (nrog rau huab cua txias). S355J2 lav qhov zoo tshaj qhov qis-kub toughness vim qhov kev ntsuas nruj dua.