ASTM A252 Qib 1 Steel Pipe Pile piav qhia
ASTM A252 Qib 1 yeeb nkab piles yog tsawg- carbon steel yeeb nkab pawg tsim raws li tus qauv ASTM A252. Lawv feem ntau yog siv rau kev tsim thiab kev txhawb nqa cov ntawv thov, xws li cov hauv paus ntawm cov choj, cov tsev, txoj kev, thiab cov qauv hauv hiav txwv.
Specification ntawm ASTM A252 Qib 1
| Txuj | A252 |
| Specification | Welded Steel Yeeb Nkab Piles |
| Hom | Hluav taws xob Resistance Welded (ERW) |
| Loj | NPS 1 TO NPS 24 [DN25 txog DN 600], nrog nominal nruab nrab phab ntsa tuab raws li muab hauv ASME B 36.10M lossis raws li tus neeg siv khoom xav tau. |
| Sab nraud | 1-24 nti (33.4-609.6mm) |
| Thickness | 3-12 hli |
| Ntev | Min 3 M, Max18 M, los yog raws li tus neeg yuav tsum tau muaj. |
| Xaus | Qhov loj me me yog dawb, qhov loj me yog beveled, los yog raws li tus neeg yuav tsum tau muaj |
| Kev kho saum npoo | Feem ntau liab qab los yog dub kua roj vanish |
| Ntim | Qhov loj me me hauv qab 219.1mm hauv pob khoom, qhov loj me hauv ntau |
| Kev sim | Tshuaj muaj pes tsawg leeg, ntsuas kub, ntsuas khoom, Tensile Requirements, thiab lwm yam raws li tus neeg yuav tsum tau muaj. |
astm a252 qib 1 yield zog
| Qib | Yield zog (ksi) | Tensile zog (ksi) |
|---|---|---|
| Qib 1 | 30 | 50 |
Qhov tsawg kawg nkaus tawm lub zog rau ASTM A252 Qib 1 steel yeeb nkab yog 30,000 psi (205MPa).
astm a252 qib 1 Cov Khoom Siv Khoom
| Element | Kev sib xyaw (%) |
|---|---|
| Cov pa roj carbon (C) | Tsawg dua lossis sib npaug li 0.26% |
| Manganese (Mn) | Tsawg dua lossis sib npaug li 1.60% |
| Phosphorus (P) | Tsawg dua lossis sib npaug li 0.05% |
| Sulfur (S) | Tsawg dua lossis sib npaug li 0.05% |
Qhov sib txawv ntawm ASTM A252 Qib 1, Qib 2, thiab Qib 3 cov yeeb nkab steel:
| Khoom | ASTM A252 Qib 1 | ASTM A252 Qib 2 | ASTM A252 Qib 3 |
|---|---|---|---|
| Yam tsawg kawg nkaus Yield Strength | 30,000 psi (205 MPa) | 35,000 psi (240 MPa) | 45,000 psi (310 MPa) |
| Tensile zog | 45, 000 - 66,000 psi (310 - 460 MPa) | 53, 000 - 77,000 psi (365 - 530 MPa) | 66,000 - 86,000 psi (455 - 595 MPa) (feem ntau siab dua Qib 1 thiab Qib 2) |
| Chemical Composition (Tswj) | Tsawg carbon cov ntsiab lus, tsawg alloying ntsiab | Cov ntsiab lus carbon nruab nrab, tej zaum yuav muaj cov ntsiab lus alloying me ntsis ntau dua li Qib 1 | Cov ntsiab lus carbon ntau dua thiab tuaj yeem muaj cov ntsiab lus alloying ntxiv kom ua tiav lub zog siab dua |
| Weldability | Zoo heev, vim qis carbon thiab alloy cov ntsiab lus | Zoo, tab sis tej zaum yuav xav tau kev saib xyuas me ntsis thaum vuam piv rau Qib 1 | Zoo, tab sis preheating thiab post-weld heat treatment tej zaum yuav tsim nyog rau cov seem tuab lossis siab dua - kev siv kev ntxhov siab |
| Daim ntawv thov | Lub teeb- lub luag haujlwm piling, cov qauv ib ntus, qis-load daim ntawv thov | General - lub hom phiaj piling, nruab nrab -load daim ntaub ntawv, tsev, txuas hniav | Heavy-lub luag haujlwm piling, siab -load daim ntaub ntawv, sib sib zog nqus foundations, offshore qauv |
| Nqi | Feem ntau qhov qis tshaj ntawm peb qib | Tus nqi nruab nrab | Feem ntau qhov siab tshaj plaws ntawm peb qib vim muaj zog dua thiab kev ua haujlwm ntxiv |
Sib piv cov tshuaj muaj pes tsawg leeg ntawm ASTM A252 GR1 thiab ASTM A139 GRB steel kav:
| Chemical Composition (%) | A252 GR1 (Tswj tus nqi / qhov yuav tsum tau muaj) | A139 GRB (Hloov tus nqi / qhov yuav tsum tau muaj) |
|---|---|---|
| Cov pa roj carbon (C) | Tsawg dua lossis sib npaug li 0.25 (Feem ntau tsis tshaj 0.29%) | Tsawg dua lossis sib npaug rau 0.30 (Tej zaum yuav txawv raws li qhov tshwj xeeb) |
| Manganese (Mn) | - (Tsis qhia meej, feem ntau qis) | Feem ntau xav tau: 0.90% -1.50% |
| Phosphorus (P) | Tsawg dua los yog sib npaug rau 0.05 (Hloov txwv) | Tsawg dua los yog sib npaug li 0.05 |
| Sulfur (S) | Tsawg dua los yog sib npaug rau 0.05 (Hloov txwv) | Tsawg dua lossis sib npaug li 0.045 |
| Silicon (Si) | - (Tsis qhia meej, feem ntau qis) | Feem ntau xav tau: 0.10% -0.50% |
| Alloy Elements | Yeej dawb ntawm lwm cov ntsiab lus alloy | Tej zaum yuav muaj cov kab hlau rhuav tshem los txhim kho kev ua haujlwm |
ASTM A252 Qib 1 steel yeeb nkab pawg muaj ntau yam kev siv vim lawv cov yam ntxwv, suav nrog:
1. Lub teeb -duty Piling
Kev them nyiaj yug rau Lub Teeb Teeb: Lawv tuaj yeem siv los ua pawg los txhawb cov teeb pom kev zoo xws li cov tsev me me, chaw cia khoom, lossis cov chaw nyob. Lawv lub zog qis dua piv rau qib siab dua - qib A252 pawg yog txaus rau cov ntawv thov no uas cov khoom thauj tsis siab heev.
Cov qauv ib ntus: Rau kev tsim kho ib ntus xws li kev txhawb nqa kev tsim kho thaum lub sij hawm tus choj lossis lub tsev tsim kho, ASTM A252 Qib 1 cov yeeb nkab tuaj yeem yog tus nqi - kev daws teeb meem zoo. Lawv muab qhov tsim nyog ruaj khov thaum lub sijhawm tsim kho thiab tuaj yeem raug tshem tawm lossis rov ua dua tom qab siv.
2. Tsawg - rub daim ntawv thov
Lub laj kab thiab Guardrail Posts: Nyob rau hauv cov cheeb tsam uas muaj cov av mos, cov yeeb nkab no tuaj yeem raug tsav mus rau hauv av kom ua haujlwm ruaj khov rau cov laj kab lossis cov guardrails. Lawv lub peev xwm nkag mus thiab thauj tog rau nkoj hauv av muab lub hauv paus ruaj khov rau cov kev nyab xeeb thiab ciam teb - txhais cov qauv.
Kos npe txhawb: Rau cov paib kev loj, cov ntawv tshaj tawm, lossis lwm qhov kev teeb tsa, ASTM A252 Qib 1 cov yeeb nkab tuaj yeem siv los txhawb cov qauv kos npe. Cov loads ntawm cov paib no feem ntau tsis siab heev, thiab cov yeeb nkab piles tuaj yeem hloov cov khoom thauj mus rau hauv qab av.
3. Marine thiab Waterfront Structures (Limited)
Me - scale Dock Piles: Nyob rau hauv ib puag ncig dej ntsiag to lossis rau me me - scale docks, xws li cov nkoj ntiag tug docks lossis nuv ntses piers nrog qis - rau - nruab nrab loads, cov yeeb nkab no tuaj yeem siv tau. Lawv tuaj yeem tiv taus cov buoyancy thiab lateral quab yuam los ntawm cov dej thiab cov qauv chaw nres nkoj mus rau ib qho twg.
Erosion Control: Qee zaum, lawv tuaj yeem siv los ua ib feem ntawm kev tswj xyuas kev yaig raws ntug dej hiav txwv. Los ntawm kev tsav cov yeeb nkab rau hauv av ntawm ntug dej, lawv tuaj yeem pab txhim kho cov av thiab tiv thaiv kev yaig ntxiv.
4. Cov ntawv thov kev ua liaj ua teb
Kev them nyiaj yug rau Farm Structures: Lawv tuaj yeem siv los txhawb kev ua liaj ua teb xws li cov qoob loo, cov tsiaj me me, lossis cov cuab yeej khaws cia. Lub teeb hnyav uas cuam tshuam nrog cov qauv kev ua liaj ua teb no ua rau ASTM A252 Qib 1 yeeb nkab pawg yog qhov kev xaiv tsim nyog.
