Cov hlau feem ntau siv thoob plaws hauv Tebchaws Europe tau teev tseg kom ua raws li European tus qauv EN 10025. Txawm li cas los xij, ntau lub teb chaws tus qauv kuj tseem siv tau.
Cov qhab nia raug piav raws li 'S275J2' lossis 'S355K2W'. Hauv cov piv txwv no, 'S' qhia txog cov txheej txheem es tsis yog engineering steel; 275 los yog 355 txhais tau hais tias lub zog yield nyob rau hauv newtons ib square millimeter los yog qhov sib npaug megapascals; J2 lossis K2 qhia txog cov ntaub ntawv toughness los ntawm kev siv Charpy cuam tshuam qhov ntsuas qhov tseem ceeb; thiab 'W' txhais tau hais tias huab cua steel. Cov ntawv ntxiv tuaj yeem siv los xaiv cov hlau zoo ('N' lossis 'NL'); quenched thiab tempered steel ('Q' lossis 'QL'); thiab thermomechanically dov hlau ('M' lossis 'ML').
1. S275JOH Specification S275JOH yog qib steel hauv EN 10219 specification, EN 10210 tus qauv. Thiab feem ntau siv cov lus qhia tshwj xeeb yog EN10219 tus qauv, uas yog Cold tsim welded structural hollow seem ntawm non-alloy thiab nplua grain steels.
EN10219-1 qhia txog cov txheej txheem kev xa khoom rau cov khoom txias tsim welded structural hollow seem ntawm ncig, square lossis duab plaub thiab siv rau cov qauv hollow seem tsim txias yam tsis muaj kev kho cua sov tom qab.
Qhov yuav tsum tau muaj rau S275JOH yeeb nkab kam rau ua, qhov ntev thiab ntu s275 yeeb nkab khoom muaj nyob rau hauv EN 10219-2.
2. S275JOH Steel Pipes manufacturing txheej txheem
Cov txheej txheem tsim steel yuav tsum nyob ntawm kev txiav txim siab ntawm cov neeg tsim khoom steel. S275JOH carbon steel kav yuav ua tau nyob rau hauv ERW, SAW los yog seamless txheej txheem. Tag nrho cov khoom siv hlau S275JOH thiab S275JOH kav yuav tsum ua raws li EN10219 cov qauv.
Cov qhab nia muaj zog ib txwm muaj yog 195, 235, 275, 355, 420, thiab 460, txawm hais tias qee qib tau siv ntau dua li lwm tus xws li hauv UK, yuav luag tag nrho cov qauv hlau yog qib S275 thiab S355. Cov qib siab dua muaj nyob rau hauv cov khoom quenched thiab tempered (500, 550, 620, 690, 890 thiab 960 - txawm tias qib siab dua 690 tau txais tsawg yog tias siv hauv kev tsim kho tam sim no).
Cov hlau siv rau kev tsim vaj tsev hauv Asmeskas siv cov qauv alloys txheeb xyuas thiab teev los ntawm ASTM International. Cov hlau no muaj cov cim alloy pib nrogAthiab tom qab ntawd ob, peb, lossis plaub tus lej. Plaub-tus lej AISI steel qib feem ntau siv rau kev siv tshuab engineering, tshuab, thiab tsheb yog qhov sib txawv tshwj xeeb series.
Lub tswv yim ntawm CE kos rau txhua yam khoom siv thiab cov khoom siv hlau yog qhia los ntawm Cov Khoom Siv Khoom Siv (CPD). CPD yog European Cov Lus Qhia uas ua kom muaj kev ywj pheej ntawm txhua yam khoom siv hauv European Union.
Vim tias cov khoom siv hlau yog "kev nyab xeeb tseem ceeb", CE Marking tsis raug tso cai tshwj tsis yog lub Hoobkas Kev Tswjhwm Zoo (FPC) uas lawv tsim tau raug soj ntsuam los ntawm lub cev ntawv pov thawj tsim nyog uas tau pom zoo rau European Commission.
Nyob rau hauv cov ntaub ntawv ntawm cov khoom steel xws li cov seem, bolts thiab fabricated steelwork lub CE Marking qhia tau hais tias cov khoom ua raws li cov txheej txheem sib haum xeeb.
