ASTM A139 S235 J0 Kauv Steel Pipes
Ib qho ntawm cov txiaj ntsig tseem ceeb ntawmS235 J0 kauv steel yeeb nkabyog nws yooj yim hauv txoj kab uas hla thiab phab ntsa thickness specifications.Qhov no tso cai rau kev tsim ntau dua adaptability, tshwj xeeb tshaj yog nyob rau hauv zus tau tej cov high-qib, tuab-walled kav.Tsis tas li ntawd, thev naus laus zis tshwj xeeb yog qhov ua tau zoo ntawm kev tsim cov kav dej tuab ntawm cov kab me me thiab nruab nrab, ua haujlwm zoo dua lwm txoj hauv kev.
Mechanical Property
| qib steel | yam tsawg kawg nkaus yield zog Mpa | Tensile zog | Tsawg kawg elongation % | Yam tsawg kawg nkaus lub zog J | ||||
| Specified thickness mm | Specified thickness mm | Specified thickness mm | ntawm qhov ntsuas kub ntawm | |||||
| 16 | ＞ 16 ≤ 40 | ＜3 | ≥3≤40 | ≤ 40 | -20 ℃ | 0 ℃ | 20 ℃ | |
| S235 JRH | 235 | 225 | 360-510 : kuv | 360-510 : kuv | 24 | - | - | 27 |
| S275J0H | 275 | 265 | 430-580 : kuv | 410-560 : kuv | 20 | - | 27 | - |
| S275J2H | 27 | - | - | |||||
| S355J0H | 365 | 345 | 510-680 : kuv | 470-630 : kuv | 20 | - | 27 | - |
| S355J2H | 27 | - | - | |||||
| S355K2H | 40 | - | - | |||||
Tshuaj muaj pes tsawg leeg
| Qib hlau | Hom de-oxidation a | % los ntawm huab hwm coj, siab kawg | ||||||
| Steel npe | Hlau tooj | C | C | Si | Mn | P | S | Nb |
| S235 JRH | 1, 0039 | FF | 0,17 ib | — | 1,40 ib | 0,040 ua | 0,040 ua | 0.009 ib |
| S275J0H | 1.0149 ib | FF | 0,20 ib | — | 1,50 ib | 0,035 ib | 0,035 ib | 0,009 ib |
| S275J2H | 1, 0138 | FF | 0,20 ib | — | 1,50 ib | 0,030 ua | 0,030 ua | — |
| S355J0H | 1.0547 ib | FF | 0,22 ib | 0,55 ib | 1,60 ib | 0,035 ib | 0,035 ib | 0,009 ib |
| S355J2H | 1.0576 ib | FF | 0,22 ib | 0,55 ib | 1,60 ib | 0,030 ua | 0,030 ua | — |
| S355K2H | 1.0512 | FF | 0,22 ib | 0,55 ib | 1,60 ib | 0,030 ua | 0,030 ua | — |
| a.Txoj kev deoxidation raug xaiv raws li hauv qab no: FF: Cov hlau tua tag nrho uas muaj nitrogen khi cov ntsiab lus hauv cov nyiaj txaus los khi muaj nitrogen (xws li min. 0,020% tag nrho Al lossis 0,015 % soluble Al).b.Tus nqi siab tshaj plaws rau nitrogen tsis siv yog tias cov tshuaj muaj pes tsawg leeg pom qhov tsawg kawg nkaus Al ntsiab lus ntawm 0,020% nrog qhov tsawg kawg nkaus Al / N piv ntawm 2: 1, lossis yog tias muaj lwm yam N-binding ntsiab.Cov ntsiab lus N-binding yuav tsum tau sau rau hauv Cov Ntaub Ntawv Tshawb Fawb. | ||||||||
Qhov zoo tshaj plaws ntawm S235 J0 kauv steel yeeb nkab ua rau nws zoo tagnrho rau ntau yam kev siv.Txawm tias nws yog kev lag luam, kev lag luam lossis kev tsim kho vaj tse, cov khoom no yog tsim los ua kom tau raws li cov kev cai nruj ntawm nws cov neeg siv.Nws qhov kev ua tau zoo thiab kev ua haujlwm ntev ua rau nws muaj txiaj ntsig zoo rau txhua qhov haujlwm uas xav tau cov kav dej submerged arc.
Ntxiv rau S235 J0 kauv steel yeeb nkab, peb cov khoom kab kuj suav nrogA252 Qib 3 steel yeeb nkab.Cov khoom yog tsim los ntawm kev tsim cov thev naus laus zis tshiab kom ntseeg tau cov qauv zoo tshaj plaws thiab kev ntseeg siab.Nrog nws lub zog tensile siab thiab zoo heev corrosion kuj, A252 Qib 3 steel yeeb nkab yog qhov zoo tagnrho rau kev thov.
Peb txaus siab muab cov kab tag nrho ntawm cov kauv submerged arc welded yeeb nkab uas ua tau raws li cov qauv kev lag luam.Peb txoj kev mob siab rau kev ua tau zoo thiab kev tsim kho tshiab tau ua rau peb muaj kev ntseeg siab rau kev lag luam steel yeeb nkab.Nrog rau kev cog lus rau kev ua tau zoo, peb txuas ntxiv thawb cov kev txwv ntawm kev tsim cov yeeb nkab steel.
Thaum nws los txog rau kauv submerged arc welded yeeb nkab, peb cov khoom tau teeb tsa tus qauv rau kev ua tau zoo, durability thiab kev ntseeg tau.S235 J0 Kauv Hlau Yeeb Nkab thiab A252 Qib 3 Hlau Yeeb Nkab yog ob qho piv txwv ntawm peb txoj kev cog lus los muab peb cov neeg siv khoom nrog cov kev daws teeb meem zoo tshaj plaws.Peb tsom mus rau kev ua tau zoo thiab kev tsim kho tshiab thiab cog lus kom ua tau raws li peb cov neeg siv khoom xav tau thiab tshaj lawv qhov kev cia siab.
Hauv cov ntsiab lus, peb S235 J0 kauv steel yeeb nkab thiab A252 qib 3 steel yeeb nkab yog qhov tshwm sim ntawm kev siv technology thiab kev ua haujlwm zoo tshaj.Cov khoom no muab kev ua haujlwm tsis sib xws, ua rau lawv xaiv zoo tshaj plaws rau ntau yam kev siv.Txawm hais tias nws yog kev tsim kho, kev tsim kho vaj tse lossis kev lag luam, peb cov kav dej arc welded yog tsim los ua kom muaj txiaj ntsig zoo dua.Cia siab tias peb cov kev txawj ntse thiab kev paub dhau los yuav muab koj cov kav dej zoo tshaj plaws hauv kev ua lag luam.
