Cov qib steel scaffolding txhais tau hais tias lub zog tawm los, ductility thiab cov qauv ntawm cov khoom siv scaffolding, thav duab, khoom siv thiab fittings. Tus naj npawb yog hais txog qhov tsawg kawg nkaus yield zog (MPa)
Primary Steel Qib rau Steel Scaffolding
Sab nraud txoj kab uas hla: 48.3mm
Phab ntsa thickness: 3.2 hli los yog 4.0 hli
Ua tiav: dub, pleev xim rau, lossis kub -dip galvanized
Steel Qib:
- Suav GB Standard: Q235, Q355
- European EN Standard: S235, S275, S355
- US ASTM Txuj: ASTM A36, ASTM A500
- Japanese JIS Txuj: STK400, STK500
S235 Vs S275 vs S355 Qib
S235, S275 thiab S355 yog British thiab European tus qauv scaffolding qib.
S235: Qib Default rau cov pa scaffolding.
S275: nruab nrab lub zog, tsis tshua muaj siv rau scaffold hlab.
S355: Siab zog rau hnyav- lub luag haujlwm txhawb nqa ib ntus.
S235 steel qib
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| Element | C | Si | P | S | N |
| Req,% | Tsawg dua los yog sib npaug li 0.20 | Tsawg dua los yog sib npaug li 0.30 | Tsawg dua los yog sib npaug li 0.05 | Tsawg dua los yog sib npaug li 0.05 | Tsawg dua lossis sib npaug li 0.009 |
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| Lub zog |
Tensile zog (Rm) (N / mm²) |
Yield zog (ReH) (N / mm²) |
Elongation Lo =5.65 √So (%) |
| Yuav tsum tau |
Ntau dua lossis sib npaug rau 340 <480 |
Ntau dua lossis sib npaug li 235 | Ntau dua lossis sib npaug li 24 |
Lus Cim: Xa mus rau BS1139 Standard
S275 Steel Qib
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| Element | C | Mn | P | S | N |
| Req,% | Tsawg dua los yog sib npaug li 0.20 | Tsawg dua los yog sib npaug li 1.5 | Tsawg dua lossis sib npaug li 0.035 | Tsawg dua lossis sib npaug li 0.035 | Tsawg dua lossis sib npaug li 0.009 |
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| Lub zog |
Tensile zog (Rm) (N / mm²) |
Yield zog (Rp 0.2) (N / mm²) |
Elongation Lo =5.65 √So (%) |
| Yuav tsum tau | 410-560 | Ntau dua lossis sib npaug li 275 | Ntau tshaj los yog sib npaug rau 20 |
Nco tseg: Xa mus rauEN10219 Txuj
S355 Steel Qib
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| Element | C | Si | Mn | P | N |
| Req,% | Tsawg dua lossis sib npaug li 0.22 | Tsawg dua los yog sib npaug li 0.55 | Tsawg dua los yog sib npaug rau 1.6 | Tsawg dua lossis sib npaug li 0.035 | Tsawg dua lossis sib npaug li 0.009 |
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| Lub zog |
Tensile zog (Rm) (N / mm²) |
Yield zog (ReH) (N / mm²) |
Elongation Lo =5.65 √So (%) |
| Yuav tsum tau | 470-630 | Ntau dua lossis sib npaug rau 355 | Ntau tshaj los yog sib npaug rau 20 |
Nco tseg: Xa mus rauEN10219 Txuj
Thaum twg xaiv qhov twg
- S235: Txheem nkag scaffolds, raj-thiab-coupler, kev tsim kho dav dav. Feem ntau yog qhov kev xaiv raug thiab pheej yig tshaj plaws.
- S275: Tsis tshua muaj teev rau scaffold hlab. Nws zaum ntawm S235 thiab S355 tab sis tsis tshua muaj qhov ua tau zoo txaus kom pom tseeb cov khoom sib cais.
- S355: Heavy- lub luag haujlwm scaffolds, shoring, industrial / choj scaffolds, siab ceg loads, ntev spans - qhov twg lub zog yield ntau dua yog siv tiag tiag.
Kwv yees qhov sib npaug: S235 ≈ Q235B / STK400 / A36; S275 ≈ Q275B; S355 ≈ Q345B / STK500
Qhov no txhais li cas hauv ascaffolding system
- Cov qauv / ntsug: qib siab tuaj yeem nce axial muaj peev xwm, tab sis buckling thiab kev sib txuas eccentricity feem ntau tswj. S355 yog ib txwm muaj nyob rau hauv siab - muaj peev xwm ua tus tswv tshuab.
- Ledgers / transoms: S355 pab qhov twg khoov lossis tawm los tswj, tshwj xeeb tshaj yog luv luv thiab hnyav hnyav.
- Braces: Qib pab nyob rau hauv nro thiab stocky compression, tab sis slender buckling yog feem ntau geometry - nyob ntawm.
- Couplers / wedges / rosettes: Cov no feem ntau kav. Lawv feem ntau raug kuaj rau EN 74 lossis cov chaw tsim khoom tus qauv, tsis yog tsuas yog teev raws li S235 / S275 / S355.
- Lub hauv paus jacks / ntsia hlau jacks: Feem ntau forged los yog siab dua - cov khoom qib; xov thiab txiv ntseej tsim teeb meem ntau dua li qib raj.
- Deflection: Tib E rau tag nrho peb. Yog tias sag lossis kev tswj xyuas kev pabcuam, siv qhov loj dua, luv dua, lossis kev txhawb nqa ntau dua -tsis yog qib siab dua.
ASTM A36 thiab ASTM A500 Qib
ASTM A36 thiab ASTM A 500 yog cov khoom siv hauv Teb Chaws Asmeskas tus qauv scaffold, tab sis lawv yog cov khoom sib txawv:
ASTM A36: nyob rau hauv lub hauv paus daim hlau, couplers, thav duab, thiab lwm yam uas tsis yog - raj Cheebtsam.
ASTM A500: cov hlau tseem ceeb rau Scaffold hlab, ncej, ncej
ASMT A 36 Qib Steel
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| Element | Cov pa roj carbon | Manganese | Phosphorus | Sulfur | Silicon |
| Req,% | Tsawg dua lossis sib npaug li 0.26 | – | Tsawg dua los yog sib npaug li 0.04 | Tsawg dua los yog sib npaug li 0.05 | Tsawg dua los yog sib npaug li 0.04 |
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| Lub zog |
Tensile zog, min, psi [MPa] |
Yield point, min, psi [MPa] |
Elongation hauv 2 hauv. [50 hli], min,% |
| Yuav tsum tau |
58-80 [400-550] |
36 [250] | 21 |
ASTM A 500 qib steel
ASTM A500 tus qauv muaj steel qib A, qib B, Qib C, thiab qib D.Grade B thiab qib C feem ntau xaiv rau cov khoom siv scaffolding.
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| Tshuaj | Qib A, B, D | Qib C |
| Carbon, max | 0.30 | 0.27 |
| Manganese, max | 1.40 | 1.40 |
| Phosphorus, max | 0.045 | 0.045 |
| Sulfur, max | 0.045 | 0.045 |
| Tooj, min | 0.18 | 0.18 |
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| Mechanical Property | Qib A | Qib B | Qib C | Qib D |
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Tensile zog, min, psi [MPa] |
45000 [310] | 58000 [400] | 62000 [425] | 58000 [400] |
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Yield zog, min, psi [MPa] |
33000 [230] | 42000 [290] | 46000 [315] | 36000 [250] |
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Elongation hauv 2 hauv. [50 hli], min,% |
25 | 23 | 21 | 23 |
Youfa Steel Pipe Group muab cov khoom siv scaffolding rau Kenya Arena hauv 2024, nrog rau tag nrho cov khoom ntawm 2300 tons. Cov khoom siv yog ringlock scaffolding, ib qho qauv steel qauv feem ntau tsim los ntawm S235 me me hlau.
Ringlock scaffolding yog ntau yam, hnyav -duty modular scaffolding tov. Nws cov qauv tsim muaj lub voj voog rosette txuas uas tso cai rau daim ntawv teev npe thiab cov qauv kom raug kaw kom ruaj ntseg ntawm ntau lub ces kaum, xa cov qauv kev ruaj ntseg zoo, siab load-cov kabmob muaj peev xwm thiab ceev sib dhos thiab disassembly.
Cov txheej txheem scaffolding no yog siv rau cov chaw ua haujlwm ib ntus, kev txhawb nqa formwork, kev saib xyuas thiab kev tsim kho lub ntsej muag thaum lub sijhawm ua haujlwm hauv tsev. Cov khoom siv hlau ruaj khov tuaj yeem tiv taus hnyav kev tsim kho thiab hloov kho kom yooj yim rau txoj kev nkhaus nkhaus architectural contours ntawm lub arena. Qhov kub-dip galvanized nto kho tau zoo heev los tiv thaiv- corrosion, uas yog qhov tseem ceeb los tiv thaiv cov av noo thiab huab cua kub hauv Kenya.
Piv nrog rau cov tsoos scaffolding hom, ringlock scaffolding muaj tsawg dua xoob me me fittings, zoo heev txo qhov kev pheej hmoo ntawm qhov ploj thiab txhim kho qhov chaw tsim kho kev nyab xeeb. Nws tuaj yeem rov qab siv tau ntau zaus rau cov haujlwm sib txawv, ua rau muaj txiaj ntsig zoo rau kev tsim vaj tsev loj loj -.
