Q215B yog ib hom kev ua pa roj carbon cov hlau txheem qib me me qib raws li Suav TebchawsGB / T 3091 {{- 2015 ("Welded Steel Kav Rau Cov Kua Muag Khoom Siv Kom Zoo Nkauj")thiabGB / T 700-2006 ("Carbon Qauv Hlau")Cov. Tus "Q" sawv ntsug rau paib lub zog (QU DIAN), "215" qhia qhov tsawg kawg nkaus zog lub zog ntawm 215 MPA, thiab "B" qhia meej qhov kev cuam tshuam ntau dua ntawm chav nyob (20 degree) piv rau qib A.
Nws yog dav siv rau tsawg - cov kua dej siab, roj, cua sov, cua sov, thiab cov ntawv thov dav dav.
Cov Khoom Tseem Ceeb thiab Cov yam ntxwv
1. Tshuaj lom neeg sib xyaw (melting tsom xam)
Cov tshuaj lom neeg muaj tshuaj lom yog qhov tseem ceeb txiav txim siab cov hlau cov khoom.
| Lub ntsiab | Cov ntsiab lus (%) (Max) | Sau ntawv |
|---|---|---|
| Carbon (c) | 0.15 | Cov ntsiab lus carbon tsawg muab cov qauv ductility zoo thiab Weldability. |
| Manganese (mn) | 0.60 | |
| Silicon (si) | 0.30 | |
| Sulphur (s) | 0.045 | Qis dua sulfur dua Q235b, zoo dua rau khoov. |
| Phosphorus (p) | 0.045 | |
| Deoxidization | F(Rimmed hlau),Z(Tua cov hlau),b(Semi -} tua hlau) | Feem ntau muab tau raws li tua (Z) lossis semi-}} tua rau ntau cov khoom muaj me ntsis. |
* Cov lus 1: Tshuaj lom neeg raws li GB / T 700-2006 *
2. Cov Khoom Siv Neeg Kho Tshuab
Cov no yog qhov tseem ceeb ntawm lub cev nqaij daim tawv.
| Ntiag tug | Tus nqi | Kev Ntsuas Mob |
|---|---|---|
| Yield zog (re) | Ntau dua los yog sib npaug rau 215 MPa | |
| Lub zog tensile (RM) | 335 - 450 mpa | |
| Elongation (a) | Ntau dua los yog sib npaug rau 26% | Nyob ntawm cov piv txwv gauge ntev (5.65. Ntau dua elongation qhia tau zoo dua ductility. |
| Cuam Tshuam | Yuav xav tau | Ntawm 20 degree.Yam tsawg kawg nkaus cuam tshuam lub zog ntawm27 JoulesCov. Qhov no yog qhov sib txawv ntawm Q215A. |
* Rooj 2: Cov khoom siv neeg kho tshuab raws li GB / T 3091 & GB / T 700 *
3. Qhov loj me thiab kev ua kom tau (GB / T 3091-2015)
Q215B kav yog tsim nyob rau hauv ntau qhov ntau thiab tsawg li welded (ERW) kav dej.
Sab nraud inch (OD):Feem ntau los ntawm½ nti (21.3mm)mus txog24 ntiv tes (600 hli +).
Phab ntsa tuab (wt):Sib txawv nrog lub taub. Cov caij nyoog sib xws yog tus qauv 40, STD, thiab lwm yam yuav muaj lub phab ntsa tuab ntawm 2.77mm (Sch 40) lossis 3.91 hli (schn 1).
Ntev:Feem ntau ntawm 6 meters lossis 12 meters (tsau ntev), tab sis kuj tseem tuaj yeem muab rau hauv qhov ntev.
Cov Qauv Qauv:
Txheej tooj uas hla kev ua kom tsis kam:Feem ntau ± 0.5% rau ± 1% ntawm cov kabinal ciav hlau.
Phab Ntsa Thickness kam Zam:Feem ntau -10% rau +12.5}% ntawm cov nominal ntsa tuab.
Ntev ntev:Feem ntau {{0} mm rau +50 hli rau tsau cov kav dej.
4. Hydrostatic Test
Raws li cov kua dej conventance yeeb nkab, txhua Q215B yeeb nkab yuav tsum tau ua rau cov phab ntsa tuab, lub taub hau, thiab qib hlau muaj kev ntxhov siab. Nws ua kom muaj kev ncaj ncees ntawm Weld thiab cov yeeb nkab lub cev thaum muaj kev ntxhov siab.
5. Nto tiav
Cov yeeb nkab muaj liab qab (dub) nto, feem ntau nrog lub teeb txheej ntawm zeb nplai thiab qee zaum xeb. Ntsis qhov tsis xws luag zoo li khawb, nti, lossis slags ntxaum tshaj li ib qho kev zam txim (feem ntau 5% ntawm wt) tsis tso cai.
Sib piv nrog cov qhab nia zoo sib xws
| Yam zoo | Q215B | Q235B | ASTM A53 Gr. B |
|---|---|---|---|
| Lub hom phiaj | GB / T 3091 | GB / T 3091 | ASTM A53 |
| Min. Paib lub zog | 215 MPa | 235 MPa | 240 MPa (35 ksi) |
| Lub zog tensile | 335-450 MPa | 375-500 mpa | 415 MPa (60 KSI) |
| Qhov tseem ceeb sib txawv | Txo lub zog, puas zoo dua qub dabtsi yog khoov | Lub zog siab dua, feem ntau yog | Kev pom zoo thoob ntiaj teb |
Nco tseg:Q215B feem ntau yog ib qho kev sib npaug dav dav rauASTM A53 Qib A(Yij Lub Zog 205 MPa) nyob rau hauv cov nqe lus ntawm cov tshuab khoom siv zog, txawm tias muaj tshuaj lom neeg sib txawv.
Cov Kev Siv Raug Raug
Tsawg -} cov roj siab siab:Dej muab khoom, kav dej kav dej, cov roj hluav taws xob hauv tsev.
Lub hom phiaj txheej txheem:Fencing, scaffolding, tes ua, txhawb nqa ntas nyob rau hauv tsis - tseem ceeb qauv.
HVAC tshuab:Devondwork thiab qis -} siab cov cua kub tshuab.
Agricultural Irrigation Irrigation Systems.
Lub caij tsheb kauj vab thav ntawv thiab rooj tog zaum(Tom qab ua ntxiv).
Lub ntsiab
Q215Byog ib qho ntau yam, kev lag luam carbon hlau yeeb nkab paub rau nwsUa kom zoo nkauj ductility, zoo weldability, thiab tsim nyog cuam tshuam kev cuam tshuam nyuaj ntawm chav tsev kubCov. Nws cov qis tawm khoom lub zog piv rau Q235B ua rau nws haum rau cov kev siv uas yuav tsum tau ua ntau yamKev khoov txias thiab sib sauCov. Nws yog cov khoom siv rau kev tsim kho kom raug thiab qis - siab convümotance systemsab hauv Suav thiab ntau cov kev lag luam thoob ntiaj teb.
