Pre- Galvanized Steel Yeeb Nkab (feem ntau abbreviated li Pre-GI Pipe) yog hais txog lub raj steel uas yog tsim los ntawm steel coils uas twb tau coated nrog ib tug tiv thaiv txheej ntawm zinc. Lub galvanizing tshwm sim ua ntej cov yeeb nkab tsim.
yam ntxwv tseem ceeb
-Cov txheej txheem tsim khoom:Cov txheej txheem pib nrog steel kauj (feem ntau ua los ntawm cov ntaub ntawv zoo li Q235B). Daim ntawv tiaj tus no yog pub los ntawm kev kub kub txuas ntxiv -dip galvanizing kab, qhov twg nws tau txais zinc txheej. Cov ntawv coated no yog tom qab txiav thiab tsim rau hauv ib lub raj, thiab cov seam yog welded.
-Zinc Txheej:Vim tias zinc yog siv rau hauv qhov chaw tiaj tus, cov txheej txheej zoo sib xws thiab du. Txawm li cas los xij, zinc txheej feem ntau yog thinner piv rau cov kav dej uas galvanized tom qab fabrication.
- Txheej Txheej Thickness:Yam tsawg kawg nkaus ~ 12 µm (micrometers).
-Qhov tshwm sim:Nws muaj qhov ci, ci, thiab du nto tiav, uas yog qhov zoo nkauj txaus nyiam.
Qhov Zoo Tshaj Plaws: Nws yog tus nqi ntau dua -zoo rau qhov loj - kev tsim khoom thiab cov haujlwm uas hnyav hnyav sab nraum zoov tiv thaiv corrosion tsis yog thawj qhov kev txhawj xeeb.
Daim ntawv thov:
Vim nws zoo zoo thiab muaj kev tiv thaiv txaus rau sab hauv tsev lossis sab nraum zoov ib puag ncig, nws yog dav siv rau:
*Cov kab hluav taws xob.
*Scaffolding thiab lub teeb thav duab thav duab.
*Tsev cog khoom thav duab thiab khoom siv ua liaj ua teb.
*Cov rooj tog zaum thiab sab hauv kho kom zoo nkauj Cheebtsam.
Qhov tseem ceeb Distinction nrog Kub-Dipped Galvanized (HDG)
Qhov Tseem Ceeb Distinction: Tsis txhob cuam tshuam qhov no nrog Kub-Dipped Galvanized (HDG) steel yeeb nkab. Rau cov kav dej HDG, cov yeeb nkab tiav lawm yog pickled thiab ces dipped rau hauv ib da dej ntawm molten zinc. Qhov no ua rau cov zinc txheej tuab ntau (yam tsawg kawg nkaus ~ 45 µm) thiab muab kev tiv thaiv corrosion zoo rau kev siv sab nraum zoov hnyav, tab sis ntawm tus nqi siab dua.
Cov khoom siv qib: Q235B thiab Q355B
Cov no yog Suav Standard structural steel qib (GB / T 700 thiab GB / T 1591). Tus "Q" sawv cev rau Yield Strength ("Qu" hauv Suav Pinyin). Tus lej qhia qhov tsawg kawg nkaus tawm lub zog nyob rau hauv MPa (Megapascals) rau cov seem thinnest. Cov lus "B" qhia txog qib zoo, uas qhia txog qhov yuav tsum tau muaj kev ntsuas kub (qhov no, chav tsev kub, 20 degree).
Q235B steel qib (Qhov no yog cov feem ntau carbon structural steel)
Hom: Carbon Steel.
Yield zog (min)Ua haujlwm siab: 235 MPa.
Tensile zog: 375 - 500 MPa .
Cov khoom tseem ceeb: Zoo plasticity, toughness, thiab weldability. Nws yog tus qauv, kev xaiv kev lag luam rau cov hom phiaj dav dav.
Tshuaj muaj pes tsawg leeg(Cov ntsiab lus tseem ceeb):
Cov pa roj carbon (C): Tsawg dua lossis sib npaug li 0.20%
Manganese (Mn): 0.30% - 0.70%
Phosphorus (P): Tsawg dua lossis sib npaug li 0.045%
Sulfur (S): Tsawg dua lossis sib npaug li 0.045%
Cov ntawv thov raug:Kev tsim vaj tsev dav dav, txuas hniav, nkoj, thiab ua lub hauv paus hlau rau ua ntej -galvanized kav uas siab zog tsis yog qhov tseem ceeb
Q355B Steel Qib (Qhov no yog ib qho qis - alloy siab - lub zog steel qauv (tus neeg ua tiav rau qib 16Mn laus).
Hom: Siab-Lub zog qis-Alloy (HSLA) Hlau.
Yield zog (min): 355 MPa (rau thickness Tsawg dua los yog sib npaug rau 16mm).
Tensile zog: 470 - 630 MPa .
Cov Khoom Tseem Ceeb: Lub zog siab dua Q235B, tso cai rau cov qauv sib zog nrog cov khoom siv tsawg. Nws kuj muaj qhov zoo weldability thiab toughness. Lub zog nce ntxiv los ntawm kev sib ntxiv ntawm cov ntsiab lus alloying xws li Manganese (Mn).
Tshuaj muaj pes tsawg leeg(Cov ntsiab lus tseem ceeb):
Cov pa roj carbon (C): Tsawg dua lossis sib npaug li 0.20%
Manganese (Mn): 1.20% - 1.60% (Hloov siab dua Q235B).
Phosphorus (P): Tsawg dua lossis sib npaug li 0.035%
Sulfur (S): Tsawg dua lossis sib npaug li 0.035%
Tej kev siv: High-cov tsev nce siab, loj- qhov chaw loj, txuas hniav, tsheb, thiab cov tshuab hnyav- lub luag haujlwm uas yuav tsum muaj qhov hnyav dua - cov kabmob muaj peev xwm.
| Feature | Ua ntej- Galvanized Yeeb Nkab (txheej txheem) | Q235B (Cov khoom siv) | Q355B (Cov khoom siv) |
| Core tswvyim | Yuav ua li cas cov yeeb nkab yog coated (Galvanizing txoj kev). |
Dab tsi cov hlau yog ua los ntawm (Base hlau qib). |
Dab tsi cov hlau yog ua los ntawm (Base hlau qib). |
| Hom hlau | Lub hauv paus hlau tuaj yeem yog Q195, Q235B, thiab lwm yam. | Carbon steel qauv | Tsawg-High Alloy-Strength Steel |
| Yield zog | N/A (Cov khoom ntawm lub hauv paus hlau) | 235 MPa (Standard) | 355MPa (siab) |
| Tensile zog | N/A (Cov khoom ntawm lub hauv paus hlau) | 375-500 MPa | 470-630 MPa |
| Ntsiab Alloy | Zinc (rau txheej) | Carbon thiab Manganese (0.3-0.7% Mn) | Manganese siab (1.2-1.6% Mn) |
| Kev siv thawj zaug | Kev siv sab hauv tsev, conduits, teeb pom kev zoo qhov twg tus nqi thiab tiav qhov teeb meem. |
Cov qauv dav dav, kev xaiv nyiaj txiag rau tus qauv muaj zog xav tau. |
Heavy-cov haujlwm ua haujlwm, choj, siab- nce cov tsev uas qhov hnyav txuag thiab siab lub zog yog qhov tseem ceeb. |
| International sib npaug | N / A (Nws yog txheej txheem) | ~ ASTM A36, -EN S235JR B | ~ASTM A572 Qib 50,-EN S355JR,-JIS SIB 490 |
peb nyob ntawm no rau koj
saib
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