ASTM A283 Cov Qauv Hlau | Kev daws teeb meem kev tsim kho muaj zog, ruaj khov thiab pheej yig
Cov Qauv Hlau Truss rau Lub Tsev Modular Lub thav duab hlau truss yog ib hom kev tsim kho uas cov hlau txuas ua ke ua daim ntawv ntawm cov chav peb ceg hauv ib qho kev sib law liag los ua ib lub thav duab khov kho uas tuaj yeem siv los txhawb cov khoom siv. Cov duab peb ceg ua rau muaj zog thiab ruaj khov nrog cov khoom siv tsawg dua thiab tsim nyog rau qhov ntev thiab chav qhib.
Cov yam ntxwv zoo tshaj plaws
Qhov Sib Piv Zog Siab Rau Qhov Hnyav -- Lub geometry ntawm lub truss peb sab ua rau muaj peev xwm nqa khoom tau zoo nrog cov hlau tsawg dua.
Dav Dav - Npog thaj chaw dav yam tsis muaj cov kem sab hauv.
Tsim ntau lub hom phiaj - Zoo rau cov tsev rau khoom, cov chaw ua haujlwm, cov chaw tsim khoom thiab rau cov chaw ua yeeb yam & cov chaw ua si.
Kev Tsim Ua Ntej & Kev Sib Dhos Sai - Cov khoom siv hlau raug txiav ua ntej thiab tsim tawm ntawm qhov chaw thiab sib dhos ua ke sai sai ntawm qhov chaw.
Lub Neej Ntev - Nrog kev siv cov tshuaj tiv thaiv xeb txaus (galvanizing, pleev xim, lossis txheej), cov qauv hlau yuav muaj lub neej ua haujlwm ntau xyoo caum.
Cov Khoom
Sab Saum Toj Chord: Sab saud kab rov tav lossis tus tswv cuab ntawm lub truss
Hauv Qab Chord: Cov tswv cuab hauv qab kab rov tav hauv kev nruj
Cov Tswv Cuab Hauv Web: Cov ntsiab lus ntawm kab pheeb ces kaum thiab ntsug uas tsim cov chav peb ceg
Kev Sib Txuas: Cov seams bolted los yog welded uas koom nrog cov tswv cuab
Kev Tuav (Xaiv Tau): Kev ruaj khov ntxiv rau sab nraud rau qhov dav dav
Cov khoom siv hlau tseem ceeb rau kev tsim kho Hoobkas
1. Cov qauv tseem ceeb uas muaj peev xwm thauj khoom tau (hloov kho tau raws li qhov xav tau ntawm av qeeg hauv thaj chaw sov)
| Khoom siv | ASTM A283 (Cov tswv cuab tseem ceeb) |
| Span Range | 10–50 m (33–164 ft), kho tau raws li qhov xav tau |
| Qhov Siab ntawm Eave | 4–12 m (13–39 ft), raws li qhov yuav tsum tau ua ntawm qhov project |
| Ru tsev Pitch | 5° – 25°, kho tau raws li qhov xav tau ntawm kev ntws dej |
| Cov Cheebtsam Tseem Ceeb | Sab Saum Toj Chord (W/H hlau), Qab Chord (W/H hlau), Cov Tswv Cuab Web (square/rectangular tube, angle steel), Kev Sib Txuas (bolted/welded), Purlins & Girts (C/Z profile) |
| Cov Haujlwm Tseem Ceeb | - Kev txhawb nqa loj meej |
| - Lub zog siab-rau-qhov hnyav piv | |
| - Kev npaj ua ntej thiab sib dhos sai | |
| - Kev ruaj khov ntawm cov qauv thiab kev ua haujlwm ntev | |
| - Tsim qauv yooj ywm rau cov tsev ib leeg/ntau qhov ntev thiab ntau txheej | |
| Cov Ntawv Thov Siv Hauv Central America | - Kev lag luam: cov chaw tsim khoom, cov chaw cob qhia, cov tsev rau khoom |
| - Kev Ua Liaj Ua Teb: cov tsev cia khoom, cov tsev cog khoom, cov chaw ua liaj ua teb | |
| - Kev Lag Luam: cov khw muag khoom loj, cov chaw logistics, cov chaw ua yeeb yam | |
| - Tshwj xeeb: chaw ua si nawv, chaw nres dav hlau, chaw rau pej xeem |
| Txoj Kev Ua Haujlwm | Cov Tshuab Ua Haujlwm | Kev Ua Haujlwm |
| Kev txiav | CNC plasma/flame cutting machines, shearing machines | Kev txiav nplaim plasma rau cov phaj hlau / ntu, txiav rau cov phaj hlau nyias, nrog rau qhov tseeb ntawm qhov ntev yog tswj. |
| Kev tsim | Tshuab khoov txias, nias nres, dov tshuab | Khoov txias (rau c/z purlins), khoov (rau cov gutters/ntug trimming), dov (rau cov tuav puag ncig) |
| Kev vuam | Tshuab vuam hlau submerged arc, tshuab vuam hlau tes, tshuab vuam hlau CO₂ uas tiv thaiv roj | Kev vuam siv submerged arc (Dutch kem / H beams), stick weld (gusset plates), CO² gas shielded welding (cov khoom nyias walled) |
| Kev txiav qhov | CNC tshuab drilling, tshuab xuas nrig ntaus | CNC Boring (qhov ntsia hlau rau hauv cov phaj txuas / Cheebtsam), Punching (cov qhov me me ua ke), Nrog cov qhov tswj tau qhov txoj kab uas hla / qhov chaw kam rau siab |
| Kev Kho Mob | Tshuab tua blasting / xuab zeb blasting, sib tsoo, kab galvanizing kub-dip | Tshem tawm xeb (tshuaj tua blasting / xuab zeb blasting), sib tsoo weld (deburr), hot-dip galvanizing (bolt / kev txhawb nqa) |
| Sib dhos | Lub platform sib dhos, cov khoom siv ntsuas | Cov khoom ntawm cov khoom sib dhos ua ntej (kem + nqaj + lub hauv paus) tau raug rhuav tshem rau kev xa khoom tom qab txheeb xyuas qhov loj me. |
| 1. Kev sim tshuaj tsuag ntsev (kev sim xeb ntawm lub hauv paus) | 2. Kev sim nplaum | 3. Kev ntsuas av noo thiab cua sov |
| Cov Qauv ASTM B117 (tshuaj tsuag ntsev nruab nrab) / ISO 11997-1 (tshuaj tsuag ntsev cyclic), tsim nyog rau qhov chaw muaj ntsev ntau ntawm ntug dej hiav txwv Central American. | Kev sim hla-hatch siv ASTM D3359 (cross-hatch/grid-grid, los txiav txim siab qib tev tawm); kev sim rub tawm siv ASTM D4541 (los ntsuas lub zog tev tawm ntawm cov txheej thiab cov hlau substrate). | Cov Qauv ASTM D2247 (40 ℃ / 95% av noo, kom tiv thaiv kev tawg thiab tawg ntawm lub txheej thaum lub caij los nag). |
| 4. Kev kuaj xyuas kev laus UV | 5. Kev ntsuam xyuas tuab ntawm zaj duab xis | 6. Kev ntsuam xyuas lub zog cuam tshuam |
| Cov Qauv ASTM G154 (los ua qauv rau kev raug UV ntau hauv hav zoov nag, kom tiv thaiv kev ploj thiab kev pleev xim rau ntawm cov txheej). | Zaj duab xis qhuav siv ASTM D7091 (lub ntsuas tuab sib nqus); zaj duab xis ntub siv ASTM D1212 (kom ntseeg tau tias kev tiv taus xeb ua tau raws li qhov tuab teev tseg). | Cov qauv ASTM D2794 (kev cuam tshuam rau lub rauj poob, kom tiv thaiv kev puas tsuaj thaum lub sijhawm thauj mus los / kev teeb tsa). |
1. Ceg Txawv Tebchaws & Kev Pabcuam Lus Mev
Peb muaj cov chaw ua haujlwm txawv teb chaws uas muaj cov neeg ua haujlwm hais lus Mev thiab peb tuaj yeem hais 2 hom lus nrog peb cov neeg siv khoom los ntawm Latin America thiab Tebchaws Europe.
Peb pab neeg ua kom yooj yim rau kev tshem tawm kev lis kev cai, kev sau ntaub ntawv, thiab cov kev cai xa khoom tawm kom yooj yim rau kev xa khoom raws sijhawm thiab ua kom sai dua cov txheej txheem ntshuam khoom.
2. Npaj Txhij Rau Kev Xa Khoom Sai
Peb khaws cov khoom siv raw khoom txaus rau cov qauv hlau kub dov xws li H beam, I beam thiab cov khoom siv hlau.
Qhov no txhais tau tias lub sijhawm ua khoom sai dua yog li cov neeg siv khoom tuaj yeem tau txais cov khoom uas lawv tuaj yeem cia siab rau, sai, rau cov haujlwm xwm txheej ceev.
3. Kev Ntim Khoom Siv
Tag nrho cov khoom tau ntim nrog cov qauv seaworthy ntim (steel ncej bundling, waterproof wrapping, ntug kev tiv thaiv).
Qhov no yuav lav thiab xyuas kom muaj kev thauj khoom zoo, tsis muaj kev txav mus los thaum lub sijhawm thauj mus los ntev thiab tsis muaj kev puas tsuaj thaum tuaj txog ntawm qhov chaw nres nkoj.
4. Kev Xa Khoom Zoo & Kev Xa Khoom
Peb ua haujlwm nrog cov neeg xa khoom hauv tebchaws uas ntseeg tau thiab tuaj yeem muab cov nqe lus xa khoom yooj ywm: FOB, CIF, DDP.
los ntawm hiav txwv, tsheb ciav hlau, txoj kev, peb cog lus rau koj xa khoom raws sijhawm thiab kev pabcuam logistic taug qab zoo.
Kev kho mob rau ntawm qhov chawTxheej: Epoxy zinc nplua nuj, Galvanized (kub dip galvanized txheej thickness≥85μm kev pabcuam lub neej tuaj yeem ncav cuag 15-20 xyoo), roj dub, thiab lwm yam.
Dub roj
Galvanized
Epoxy Zinc-nplua nuj txheej
Pob:
Cov khoom lag luam tau muaj kev tiv thaiv zoo hauv cov ntim khoom kom lawv qhov chaw thiab cov qauv zoo thaum tuav. Cov khoom feem ntau tau ntim nrog cov khoom siv tsis muaj dej xws li zaj duab xis yas lossis daim ntawv tiv thaiv xeb thiab cov khoom siv me me tau ntim nrog lub thawv ntoo. Tsis tas li ntawd, tag nrho cov hlua / qhov chaw tau cim meej kom lav qhov kev tshem tawm zoo thiab kev teeb tsa tshaj lij ntawm qhov chaw.
Kev Thauj Mus Los:
Cov qauv hlau tuaj yeem xa los ntawm lub thawv lossis lub tsheb thauj khoom raws li qhov loj thiab qhov chaw mus. Cov khoom loj lossis hnyav kuj tseem raug khi kom ruaj khov los ntawm cov hlua hlau nrog cov ntoo ntawm ob sab rau kev tiv thaiv ob npaug thaum lub sijhawm thauj mus los. Tag nrho cov txheej txheem hauv kev xa khoom yog ua raws li tus qauv kev thauj mus los thoob ntiaj teb, txawm tias qhov deb thiab txawv teb chaws, kom ntseeg tau tias cov khoom xa tuaj raws sijhawm thiab kev nyab xeeb.
1. ASTM A283 hlau yog dab tsi?
ASTM A283 yog qib hlau carbon qis/nruab nrab uas feem ntau siv rau hauv cov qauv dav dav uas xav tau kev ua kom zoo thiab kev vuam zoo. Nws muaj nyob rau hauv Qib A, B, C, D thiab lub zog tensile nce ntxiv los ntawm Qib A mus rau D.
Qib A - Lub zog tensile tsawg tshaj plaws feem ntau ductility
Qib B & C - Lub zog nruab nrab thiab kev ywj pheej
Qib D - Lub Zog Tensile Siab Tshaj Plaws ntawm A283 Qib
2. Cov kev siv hlau ASTM A283 feem ntau yog dab tsi?
Cov ntawv thov ib txwm muaj rau A283 suav nrog cov thav duab nruab nrab: xws li
Cov tsev lag luam thiab cov tsev rau khoom, cov choj thiab cov platform, thiab lwm yam kev siv lag luam sib dua, tam sim no tuaj yeem tsim ua los ntawm txhuas, ua tsaug rau lub zog zoo dua thiab cov khoom tiv taus corrosion.
Cov khoom siv hlau tsim xws li girders, beams, thiab kem
Cov qib hlau rau lub zog nruab nrab, cov phaj thiab cov vaj huam sib luag zoo weldability
3. ASTM A283 muaj cov duab thiab qhov loj li cas?
Cov phaj - ib txwm tuab 6–200 hli
Cov Ntawv - Ntu nyias rau cov vaj huam sib luag
Cov kauj - qee zaum rau kev ua tiav ntxiv
4. ASTM A283 lub weldability yog dab tsi?
Kev vuam zoo heev - MIG, TIG thiab stick welding yog qhov zoo tshaj plaws.
Cov phaj nyias nyias (<25 mm) feem ntau tsis tas yuav tsum tau ua kom sov ua ntej.
Yuav kom tiv thaiv kev tawg thaum vuam cov ntu tuab, pom zoo kom siv cov txheej txheem vuam uas muaj hydrogen tsawg.
6. Puas yog A283 tuaj yeem raug galvanized lossis pleev xim?
Yog. Qhov saum npoo ntawm cov hlau tuaj yeem yog:
Kub-dip galvanizing - feem ntau siv rau kev tiv thaiv xeb
Kev pleev xim lossis hmoov txheej - nrov rau kev siv rau hauv kev tsim vaj tsev thiab cov tsev lag luam
