ASTM A139 S235 J0 KAUV STEEL PIPES
Ib qho ntawm cov ntsiab lus tseem ceeb ntawmS235 J0 KAUV STEEL YEEBNws yog qhov yooj ntawm txoj kab uas hla thiab phab ntsa thickness specemations. Qhov no tso cai rau kev tsim khoom ntau dua, tshwj xeeb tshaj yog nyob rau hauv kev tsim cov qib siab, tuab-walled kav dej. Ib qho ntxiv, cov thev naus laus zis yog siv tau tshwj xeeb ntawm kev tsim cov kav hlau tuab thiab nruab nrab, outperforming lwm txoj kev uas twb muaj lawm.
Cov Cuab Yeej Cuab Yeej Cuab Yeej
| qib hlau | Yam tsawg kawg nkaus xwb Zog MPa | Lub zog tensile | Yam tsawg kawg nkaus elongation % | Yam tsawg kawg nkaus cuam tshuam lub zog J | ||||
| Teev cov tuab mm | Teev cov tuab mm | Teev cov tuab mm | Ntawm sim ntsuas qhov kub ntawm | |||||
| <16 | > 1605 | <3 | ≥40 | I≤40 | -20 ℃ | 0 ℃ | 20 ℃ | |
| S235jrh | 235 | 22 | 360-510 | 360-510 | 24 | - | - | 27 |
| S275j0h | 275 | 26 | 430-580 | 410-560 | 20 | - | 27 | - |
| S275j2h | 27 | - | - | |||||
| S355j0h | 365 | 345 | 510-680 | 470-630 | 20 | - | 27 | - |
| S355j2h | 27 | - | - | |||||
| S355k2h | 40 | - | - | |||||
Tshuaj Muaj Tshuaj
| Qib hlau | Hom de-oxidation a | % los ntawm huab hwm coj, siab tshaj plaws | ||||||
| Hlau Npe Hlau | Hlau tooj | C | C | Si | Mn | P | S | Nb |
| S235jrh | 1.0039 | FF | 0,17 | - | 1,40 | 0,040 | 0,040 | 0.009 |
| S275j0h | 1.0149 | FF | 0,20 | - | 1,50 | 0,035 | 0,035 | 0,009 |
| S275j2h | 1.0138 | FF | 0,20 | - | 1,50 | 0,030 | 0,030 | - |
| S355j0h | 1.0547 | FF | 0,22 | 0,55 | 1,60 | 0,035 | 0,035 | 0,009 |
| S355j2h | 1.0576 | FF | 0,22 | 0,55 | 1,60 | 0,030 | 0,030 | - |
| S355k2h | 1.0512 | FF | 0,22 | 0,55 | 1,60 | 0,030 | 0,030 | - |
| a. Cov txheej txheem Deagidation yog tsim los raws li hauv qab no: FF: Nkhaus tau tua cov hlau uas muaj nitrogen (eg min. 0,015% soluble al) .b. Tus nqi siab tshaj plaws rau Nitrogen tsis siv yog tias cov tshuaj lom neeg muaj pes tsawg leeg ntawm 0,020% nrog tsawg kawg AL / N piv txog 2: 1, lossis yog tias muaj lwm cov n-khi cov khoom n-khi tam sim no. Cov n-khi cov ntsiab yuav tsum tau sau cia hauv daim ntawv tshuaj xyuas. | ||||||||
Qhov zoo tshaj plaws ntawm S235 J0 kauv steel yeeb nkab ua rau nws zoo tagnrho rau ntau cov ntawv thov. Ua nws muaj, kev lag luam lossis cov phiaj xwm infrastrasure, cov khoom no yog tsim los ua kom tau raws li cov neeg siv. Nws txoj kev ua tau zoo thiab ua rau nws tau txais txiaj ntsig zoo rau txhua qhov project xav tau kauv submerged arc hlab.
Ntxiv rau S235 J0 kauv steel yeeb nkab, peb cov khoom kab kuj suav nrogQib A252 3 tus yeeb nkab steelCov. Cov khoom lag luam yog tsim los siv cov thev naus laus zis tsim tawm kom muaj txiaj ntsig zoo tshaj plaws thiab kev ntseeg tau cov qauv. Nrog nws lub zog tensile siab thiab zoo heev corrosion tsis kam, A252 qib 3 yog qhov zoo tagnrho rau cov ntawv thov.
Peb txaus siab muab cov kab lus tag nrho ntawm muab kauv submerged arc welded yeeb nkab uas tau raws thiab tshaj tshaj li kev lag luam qauv. Peb txoj kev mob siab rau kev ua tau zoo thiab tsim kho tshiab tau ua rau peb muaj kev ntseeg siab rau cov yeeb nkab kev lag luam. Nrog rau kev cog lus rau kev ua tau zoo, peb txuas ntxiv mus thawb cov kev txwv ntawm cov yeeb nkab steel hlau.
Thaum nws los rau kauv submerged arc welded yeeb nkab, peb cov khoom teeb tsa tus qauv rau kev ua yeeb yam, kev siv taus thiab kev ntseeg tau. S235 J0 KAUV STEEL YEEB thiab A252 Qib 3 yog ob qho piv txwv STEEL thib ob tsuas yog ob qho kev cog lus los muab cov kev daws teeb meem zoo tshaj plaws rau peb cov kev daws teeb meem zoo tshaj plaws. Peb tsom mus rau qhov zoo thiab kev ua haujlwm tshiab thiab tau cog lus tuaj ntsib peb cov neeg siv khoom xav tau thiab tshaj qhov lawv xav tau.
Hauv cov ntsiab lus, peb cov S235 J0 kauv steel yeeb nkab thiab A252 qib 3 yog qhov tshwm sim ntawm kev txiav tshuab thiab kev ua haujlwm zoo dua. Cov khoom lag luam no muab cov kev tsis sib xws, ua rau lawv xaiv zoo tshaj plaws rau ntau cov ntawv thov. Seb nws yog kev tsim kho, cov phiaj xwm lossis cov phiaj xwm kev muaj, peb cov kauv submerged arc welded kav welded yog tsim los xa cov txiaj ntsig zoo. Ntseeg siab tias peb cov kev txawj ntse thiab kev paub yuav muab koj nrog cov kav hlau zoo tshaj plaws ntawm kev ua lag luam.
