Sib npaug Steel Qib Rau ASTM A203 Qib B Kub Rolled Steel Phaj

ASTM A203 Qib B yog npib tsib xee- alloy steel phaj muaj npe nrov rau nws qhov tshwj xeeb qis- kub toughness, corrosion resistance, thiab haum rau welded siab hlab ntsha nyob rau hauv hnyav ua hauj lwm tej yam kev mob. Thaum muab cov khoom siv rau cov phiaj xwm thoob ntiaj teb lossis kev taw qhia cov qauv hauv cheeb tsam, kev nkag siab nws cov qib steel sib npaug thoob ntiaj teb cov kev qhia tshwj xeeb yog qhov tseem ceeb. Kab lus no tshawb txog cov qib sib npaug ntawm A203 Qib B raws li ASME, EN, JIS, thiab lwm yam qauv, muab kev nkag siab rau lawv cov tshuaj muaj pes tsawg leeg, cov khoom siv kho tshuab, thiab cov ntawv thov nuances.

ASTM A203 Qib B siab lub nkoj steel phaj yog anickel{0}} hlau alloytsim feem ntau rau cov hlab ntsha siab ua haujlwm hauv qhov qis - qhov kub thiab txias (txog -45℃). Cov yam ntxwv tseem ceeb muaj xws li:

Tshuaj muaj pes tsawg leeg: 

Mechanical Properties:

Daim ntawv thov: LNG cia tso tsheb hlau luam, cryogenic tshuaj reactors, tshav kub exchangers, thiab siab hlab ntsha nyob rau hauv kev lag luam xws li petrochemicals, lub zog, thiab tub yees.

ASME Equivalents (American Society of Mechanical Engineers)

Thaum ASTM thiab ASME cov qauv zoo sib xws, ASME Tshooj II Ntu D (Cov Khoom Siv rau Cov Khoom Siv Hluav Taws Xob)ASME SA203 Qib BRaws li qhov sib npaug ncaj qha ntawm ASTM A203 Qib B qis kub siab lub nkoj steel phaj. Cov qib no zoo ib yam hauv cov tshuaj muaj pes tsawg leeg, cov khoom siv kho tshuab, thiab cov ntawv thov, ua kom muaj kev sib hloov pauv tsis sib haum hauv North American thiab thoob ntiaj teb cov haujlwm ua raws li ASME cov lej.

EN (European Norm) Sib npaug

Hauv European tus qauv, qhov ze tshaj qhov sib npaug rau ASTM A203 Qib B kub dov steel phaj yogEN 10028-3 15NiCuMoNb5 (WB36). Nov yog qhov kev sib piv ntxaws:

Nco tseg: Thaum WB36 muaj cov ntsiab lus npib tsib xee qis, nws cov ntsiab lus alloying (Cu, Mo, Nb) txhim khu kev nkag siab ntawm qhov kub siab, ua rau nws tsim nyog rau cov haujlwm uas muaj kev sib xyaw ua ke qis - kub thiab nruab nrab - cua sov xav tau. Rau cov ntawv thov cryogenic ntshiab (-40℃thiab qis dua),EN 10028-4 X2Ni15-20(ntau dua -nickel alloy) yuav yog qhov haum zoo dua, txawm hais tias nws tsis yog qhov sib npaug ncaj qha vim qhov sib txawv ntawm cov nqi thiab cov khoom sib xyaw.

JIS (Japanese Industrial Standards) sib npaug

Raws li cov qauv Japanese,JIS G 3127 SPV355feem ntau suav hais tias yog qhov sib npaug ua haujlwm, txawm hais tias muaj qhov sib txawv tseem ceeb:

Kev sib xyaw: SPV355 yog cov pa roj carbon-manganese hlau uas tsis txhob txwm npib tsib xee ntxiv, ua rau nws qis- kub toughness qis dua rau A203 Qib B (tsim tsuas yog qis rau -10 degree).

Siv Case: SPV355 yog txwv rau cov hlab ntsha dav dav ntawm ambient lossis qis qis, thaum A203 Qib B yog qhov yuav tsum tau ua rau -40℃thiab qis dua. Rau qhov tseeb cryogenic compatibility hauv JIS,JIS G 3127 SPV490Q(ib qho quenched-thiab- tempered steel nrog txhim kho toughness) tuaj yeem siv tau, tab sis nws tseem tsis muaj cov npib tsib xee hauv qhov qis qis - qhov kub thiab txias.

Suav National Standard (GB) sib npaug

Hauv Suav teb tus qauv GB,GB/T 3531 Q345Eyog ib qho qis-kub steel, tab sis nws tsis yog qhov sib npaug ncaj qha:

Cov ntsiab lus Nickel: Q345E tsis muaj npib tsib xee, vam khom rau manganese thiab nplua - cov nplej tswj kom nruj rau -40℃.

Kev txwv: Q345E qhov cuam tshuam lub zog ntawm -40℃yog ntau dua lossis sib npaug rau 27J (vs. A203 Qib B's 47J ntawm -45 degree), ua rau nws tsis tshua muaj kev ntseeg siab rau cov ntawv thov cryogenic huab cua. Rau tej yaam num uas yuav tsum tau nickel-alloy kev ua tau zoo, Suav manufacturers yuav tsimcov qib kev cairaws li A203 Qib B specifications.

Ua haujlwm kubA203 Qib B nickel alloy steel phaj yog irreplaceable rau ib puag ncig hauv qab -40 degree; rau qhov qis qis (-20℃rau -30 degree), qib zoo li WB36 lossis SPV490Q tuaj yeem txaus.

Corrosion Resistance: A203 Qib B cov ntsiab lus npib tsib xee muab kev tiv thaiv zoo tshaj plaws rau sulfide kev nyuaj siab corrosion thiab marine ntsev tsuag, ua rau nws tseem ceeb rau cov dej hiav txwv lossis cov dej num tshuaj.

Weldability thiab ua: Ua kom cov qib sib npaug sib npaug A203 Qib B kub dov boiler steel phaj cov pa roj carbon sib npaug (tsawg dua lossis sib npaug li 0.45%) kom tswj tau qhov kev ncaj ncees thiab tsis txhob xa- vuam tawg.

Txuj kev ua raws cai: Ib txwm txheeb xyuas tias qib sib npaug ua tau raws li qhov project-cov lej tshwj xeeb (xws li ASME, EN, lossis cov cai tswj hwm hauv zos).

ASTM A203 Qib B qhov tshwj xeeb ua ke ntawm cov ntsiab lus npib tsib xee, qis-kub toughness, thiab weldability ua rau nws tus qauv rau kev siv lub nkoj siab cryogenic. Thaum qhov sib npaug xws li ASME SA203 Qib B thiab EN 10028-3 WB36 ua haujlwm rau lub luag haujlwm, lawv tsis tuaj yeem rov ua tiav A203 Qib B qhov kev ua tau zoo hauv qhov chaw huab cua. Thaum xaiv qhov sib npaug, ua qhov tseem ceeb ntawm kev sib tw nrog qhov kub thiab txias, corrosion, thiab kev tswj hwm kev xav tau kom muaj kev nyab xeeb, kev ntseeg tau, thiab kev ua haujlwm ntev hauv kev lag luam.

Thov Ib Daim Quote

Yog tias koj xav paub ntxiv txog GNEE cov khoom, koj tuaj yeem xa email raualloy@gneesteelgroup.com. Peb zoo siab tshaj los pab koj.