SA252 GR3 carbon steel yeeb nkab yog hais txog ib hom steel yeeb nkab uas ua raws li tus qauv ASTM A252, nrog "GR3" qhia Qib 3 hauv tus qauv ntawd.
ASTM A252 yog tus qauv tsim los ntawm American Society for Testing and Materials. Nws tshwj xeeb yog hais txog qhov yuav tsum tau ua rau welded thiab seamless steel yeeb nkab pawg. Cov yeeb nkab yog ntev, cylindrical structural ntsiab uas tau tsav, drilled, los yog jetted rau hauv av los muab lub hauv paus kev txhawb nqa rau ntau yam qauv.
SA252 GR3 Piling Welded SSAW Kauv Hlau Pipes Nqe lus piav qhia
| Sab nraud | 406-1524 hli |
|---|---|
| Phab ntsa Thickness | 8-30 hli |
| Ntev | 3-17M raws li tus neeg yuav tsum tau muaj |
| Daim ntawv pov thawj | API 5L, ISO 9001: 2008, SGS, BV, CCIC thiab lwm yam |
| Qhov kawg ntawm cov yeeb nkab | Kub dipped galvanized nrog zinc 220 ~ 260g / m2; Painted nrog dub / kua roj vanish lacquer; Roj rau saum npoo los tiv thaiv xeb; Bare yeeb nkab tsis muaj painting: Epoxy painting / FBE txheej / 3PE txheej |
| Cov yeeb nkab kawg | Plain kawg / Bevel kawg; Xov ntawm ob kawg, ib kawg nrog coupling, ib kawg nrog yas hau |
| Kos npe | Raws li tus neeg yuav tsum tau muaj lossis zeb txheem |
| Ntim | OD tsis pub tsawg dua 273 hli: xoob packing, ib thooj los ntawm daim. OD tsawg dua 273mm: Nyob rau hauv hexagonal seaworthy bundles packed los ntawm steel strips. me me nested rau hauv loj loj. |
| Cov txheej txheem | LSAW (Longigudinally Submerged Arc vuam) |
| Trade Term | FOB, CFR, CIF, EXW, FCA |
| Them Nyiaj | T / T, LC |
| Lub sij hawm xa tuaj | 15-45 hnub (raws li kom muaj nuj nqis) tom qab tau txais cov nyiaj them siab tshaj los ntawm T / T lossis LC. |
| Lub khw loj | Sab Hnub Tuaj Asia, South Asia, Middle East, Europe, Middle & South America, Africa thiab Oceania |
Tensile Measurements rau ASTM A252 Qib 3 Pipes
| Qib | Yield Point | Min. Elongation ntawm 2 degree | Tensile zog | Min. Elongation ntawm 8 degree |
| 3 | 45 000 psi | 20% | 66 000 psi | … |
Xam qhov tsawg kawg nkaus Elongation tus nqi ntawm ASTM A252 Qib 3 Pipes
| Nominal Phab Ntsa Thickness hauv Inches | Yam tsawg kawg Elongation% hauv 2 Nti rau ASTM A252 Qib 3 |
| 5/16 los yog 0.312 nti | 20.00 |
| 9/32 los yog 0.281 nti | 19.00 |
| ¼ los yog 0.250 nti | 18.00 |
| 7/32 los yog 0.219 nti | 17.00 |
| 3/16 los yog 0.188 nti | 16.00 |
| 11/64 los yog 0.172 nti | 16.00 |
| 5/32 los yog 0.156 nti | 15.00 |
| 9/64 los yog 0.141 nti | 14.00 |
| 1/8 los yog 0.125 nti | 14.00 |
| 7/64 los yog 0.109 nti | 13.50 |
Txheej txheem ntau lawm
Slab/Coil Preparation: Xaiv tus qauv- ua raws li kub- dov steel phaj lossis coils ua raw khoom. Ua qhov kev soj ntsuam saum npoo thiab kev soj ntsuam zoo ntawm cov khoom siv raw kom ntseeg tau tias lawv cov tshuaj lom neeg muaj pes tsawg leeg thiab cov khoom siv kho tshuab ua tau raws li qhov yuav tsum tau ua.
Uncoiling thiab Leveling: Nruab cov hlau kauj ntawm lub uncoiler. Uncoiling thiab leveling khoom flattens steel phaj thiab tshem tawm impurities xws li hlau oxide nplai los ntawm qhov chaw.
Forming: Pub cov qib steel phaj rau hauv lub tshuab sib sau. Los ntawm kev nruam dabtsi yog khoov los ntawm ntau pawg ntawm cov chais, cov hlau phaj yog maj mam dov mus rau hauv cov duab cylindrical, tsim cov duab ntawm cov yeeb nkab steel. Thaum lub sij hawm tsim, xyuas kom meej cov npoo ntawm cov hlau phaj yog sib npaug thiab ua raws li kev npaj rau kev vuam tom ntej.
Vuam: Cov yeeb nkab uas tsim los rau hauv cov txheej txheem vuam. Cov txheej txheem vuam feem ntau suav nrog siab - zaus vuam (ERW) thiab submerged arc vuam (SAW). Siv ERW ua piv txwv, siab - zaus tam sim no ua kom sov cov hlau ntawm cov npoo ntawm cov yeeb nkab steel mus rau lub xeev molten. Tom qab ntawd, nyob rau hauv siab, cov hlau molten yog sib koom ua ke los ua ib qho kev sib txuas. Kev tswj nruj ntawm vuam tsis yog qhov tseem ceeb thaum lub sij hawm vuam kom ntseeg tau qhov zoo ntawm vuam.
Kev sib sau: Sizing thiab Straightening: Tom qab vuam, cov kav hlau steel yog sizing siv lub tshuab sizing kom paub meej cov kab thiab phab ntsa tuab raws li qhov tseeb qhov tseeb. Tom qab sizing, cov kav dej kuj xav tau kev ncaj los tshem tawm cov deformation.
Kev txiav thiab tshuaj xyuas: Cov kav hlau steel raug txiav kom ntev li ntev tau thiab tom qab ntawd ua tiav kev tshuaj xyuas, suav nrog kev tshuaj xyuas qhov muag, kev tshuaj xyuas qhov zoo, kev ntsuas qhov ntev, thiab kev ntsuas cov cuab yeej cuab tam. Cov kav dej tsim nyog tau raug kho nrog kev tiv thaiv xeb thiab ntim rau kev cia.
Daim ntawv thov
Kev tsim kho hauv paus: Dav siv los ua pawg hauv paus rau cov tsev, txuas hniav, thiab lwm yam qauv. Piv txwv li, nyob rau hauv siab - nce lub tsev tsim, A252 GR3 carbon steel kav yog tsav mus tob rau hauv av kom hloov lub tsev lub load mus tob, ruaj khov av txheej, kom ruaj khov ntawm cov qauv.
Chaw nres nkoj thiab wharf engineering: Siv ua pawg hauv paus rau piers thiab docks. Cov kav dej yuav tsum tiv taus qhov cuam tshuam ntawm cov nthwv dej, cov dej ntws, thiab qhov hnyav ntawm cov khoom thauj - cov khoom siv, thiab lawv lub zog siab thiab ua haujlwm ntev ua rau lawv haum rau qhov chaw hnyav.
Lwm cov haujlwm hauv engineering: Kuj tseem siv tau rau hauv cov haujlwm xws li khaws cov phab ntsa thiab cofferdams los muab kev txhawb nqa thiab kev ruaj ntseg.
