ASTM A252 Qib 3 yog cov khoom siv dav tshaj plaws rau cov yeeb nkab cylindrical.
Qib 3 steel yeeb nkab pawg tsis txwv rau ib txoj hauv kev tsim khoom thiab tuaj yeem tsim los ntawm ntau cov yeeb nkab- tsim cov thev naus laus zis, xws li SMLS (seamless), SAW (submerged arc welded), thiab EFW (electro- fusion welded). Qhov kev ua tau zoo no ua rau nws ua kom haum rau ntau yam kev xav tau ntawm engineering thiab kev tsim kho.
Raws li qhov siab tshaj - qhab nia nyob hauvA252 specification, nws muab superior txhua yam kev ua tau zoo, featuring ib tug yam tsawg kawg nkaus yield zog ntawm 310 MPa thiab ib tug tsawg kawg nkaus tensile zog ntawm 455 MPa. Nws tuaj yeem ua haujlwm raws li kev thauj khoom mus tas li-cov kabmob cov kabmob lossis ua haujlwm rau cov cam khwb cia-hauv- qhov chaw pob zeb.
Dimension Range
Lub tuam txhab tau txais tag nrho cov txheej txheem ntawm Gnee LSAW steel yeeb nkab ntau lawm kab thiab kev sim tshuab, tsom rau kev tsim cov tuab -phab ntsa, loj- kab LSAW steel kav siv DSAW (ob -sided submerged arc vuam).
Cov khoom lag luam muaj xws li:
Sab nraud txoj kab uas hla: DN 350 - 1500;
Phab ntsa Thickness: 8-80mm;
Cov yeeb nkab kawg
Cov kab yeeb nkab yog muab nrog cov xaus.
Qhov kawg yuav tsum yog nplaim taws- txiav los yog tshuab- txiav thiab tshem tawm kom zoo.
Rau beveled kawg, lub kaum sab xis yuav tsum nyob rau hauv 30 - 35 degree.
ASTM A252 Qib
ASTM A252 specification cais cov yeeb nkab steel rau hauv peb qib kom haum raws li cov kev pabcuam sib txawv thiab cov txheej txheem thauj khoom. Peb qib yog:
Qib 1, Qib 2, thiab Qib 3.
Kev tsim cov txheej txheem ntawm ASTM A252
A252 steel kav yuav raug tsim siv seamless, hluav taws xob kuj welded, flash welded, los yog fusion welded txheej txheem.
Weld seams ntawm cov yeeb nkab tej zaum yuav longitudinal, kauv- taub qab, los yog kauv-lap.
Xaiv cov txheej txheem tsim khoom raug yog qhov tseem ceeb rau kev ua kom zoo thiab ua haujlwm ntawm cov yeeb nkab steel.
Txoj kev LSAW (SAWL) yog tshwj xeeb tshaj yog haum rau loj - txoj kab uas hla, hnyav- cov yeeb nkab phab ntsa, tshwj xeeb tshaj yog nyob rau hauv kev tsim kho thiab kev siv vaj tse uas yuav tsum tau muaj kev thauj khoom siab - cov kabmob muaj peev xwm thiab kev txhawb nqa tob tob. Nrog nws lub zog zoo tshaj plaws, thauj khoom- muaj peev xwm, thiab hloov tau mus rau qhov sib txawv ntawm geological tej yam kev mob, nws muaj qhov zoo xws li kev teeb tsa sai thiab ntev - lub sij hawm tsim kev ntseeg tau.
Chemical Cheebtsam ntawm ASTM A252 Qib 3
Cov hlau yuav tsum tsis pub ntau tshaj 0.050% phosphorus.
Qhov kev txwv phosphorus no ua kom cov hlau tuav cov khoom siv kho kom zoo, tshwj xeeb tshaj yog rau kev siv cov qauv xws li piling.
Kev txwv tsis pub phosphorus tiv thaiv cov brittleness ntau dhau ntawm qhov kub thiab txias, yog li txhim kho kev nyab xeeb thiab kev ntseeg tau.
Tsis muaj kev cai tshwj xeeb yog muab rau lwm cov khoom siv alloying.
Qhov no yog vim hais tias cov yeeb nkab pawg feem ntau hais txog cov yam ntxwv ntawm lub zog thiab toughness - cov yam ntxwv tseem ceeb rau kev txhawb nqa cov khoom thauj - cov kabmob.
Mechanical Performance ntawm ASTM A252 Qib 3
Rau tubular piling, txhua yam yam ntxwv xws li tawm los lub zog, tensile zog, thiab toughness yog qhov tseem ceeb vim hais tias lawv ncaj qha cuam tshuam load- bearing muaj peev xwm thiab tag nrho cov qauv stability thaum lub sij hawm kev pab cuam.
Daim ntawv thov rau ASTM A252 Qib 3 Steel Tubing
ASTM A252 Qib 3 muaj lub zog siab thiab toughness haum rau ntau yam av thiab thauj khoom -cov xwm txheej. Cov ntawv thov uas muaj xws li:
Lub hauv paus tsim: ASTM A252 Qib 3 steel yeeb nkab yog dav siv los ua cov pawg hauv paus hauv kev tsim kho siab - cov tsev nce siab, txuas hniav, thiab cov qauv loj, muab lub zog tseem ceeb thiab nruj.
Cov chaw nres nkoj thiab chaw nres nkoj: Cov pawg hlau no yog siv rau hauv kev tsim khoom hauv hiav txwv los txhawb cov chaw nres nkoj thiab cov chaw nres nkoj, kom ntseeg tau tias muaj kev cuam tshuam txog kev cuam tshuam ntawm nkoj thiab marine corrosion. Cov txheej tiv thaiv feem ntau yog siv los txhim kho cov kav ntev thiab tiv thaiv- kev ua haujlwm corrosion.
Cov dej ua haujlwm: ASTM A252 Qib 3 cov kav dej yog ua haujlwm hauv cov dams, levees, lock systems, thiab lwm yam hydraulic tej yaam num los txhawb cov ntug dej hiav txwv thiab txhim kho kev tiv thaiv dej nyab.
Cov dej num hluav taws xob: Hauv cov chaw ua liaj ua teb cua, cov chaw sab nrauv, thiab ntau lub zog- cov chaw muaj feem cuam tshuam, cov kav dej no ua raws li cov qauv kev txhawb nqa kom ua haujlwm ruaj khov.
Kev thauj mus los: ASTM A252 Qib 3 cov kav hlau steel yog siv rau hauv kev tsheb ciav hlau, txoj kev loj, thiab lub tshav dav hlau khiav, muab cov khoom muaj zog- muaj peev xwm ua tau thiab ntev - lub sij hawm durability.
