Ob lub S275J0H thiab S275J2H welded kav yog hollow ntu rau European cov qauv qauv. Tus qauv siv tau yog en 10219. Cov tub ntxhais sib txawv nyob hauv qhov qis-kub kev tswj hwm, cov ntsiab lus tsis sib xws. Cov kev sib txawv tshwj xeeb yog raws li hauv qab no:
1. Tub ntxhais kawm sib txawv
- Tsawg-kub cuam tshuam tawv
S275J2H: Yuav tsum muaj txog 20℃cuam tshuam lub zog loj dua lossis sib luag rau thaj chaw txias (xws li cov haujlwm tseem ceeb (cov haujlwm loj); S275J0H: Tsuas yog lees paub 0℃cuam tshuam lub zog loj dua los yog sib luag rau lub zog tsis muaj zog dua J2 qib.
- Tshuaj lom neeg cov tshuaj lom neeg tswj (%)
| Lub ntsiab | S275J2H SELAL QUB | S275J0H UPURALAL | Rooj mov |
|---|---|---|---|
| P | Tsawg dua los yog sib npaug rau 0.025% | Tsawg dua los yog sib npaug rau 0.030% | J2H tau txo qis kev pheej hmoo ntawm txias brittleness |
| S | Tsawg dua los yog sib npaug rau 0.025% | Tsawg dua los yog sib npaug rau 0.030% | J2H Vuam tau qis dua qhov tseem ceeb rau kev tawg |
| Mn | Tsawg dua los yog sib npaug rau 1.40% | Tsawg dua los yog sib npaug rau 1.50% | J0H muaj ntau dua cov ntsiab lus manganese thiab me ntsis muaj peev xwm ntau dua |
- Lub zog ua raws kev sib piv
When the thickness is >80mm:
Cov txiaj ntsig lub zog ntawm S275J0H tee rau tsawg dua los yog sib npaug rau 235MPA (cov kabmob muaj peev xwm txo qis dua);
Lub zog ua raws li S275J2H yog qhov me dua ntawm tib tuab (cov paib muaj zog ntawm 100mm tuab daim hlau tseem loj dua los yog sib npaug rau 225mpa)
2. Kev thov cov xwm txheej hloov tau
| Xwm txheej | Khoom | Tseem ceeb hauv paus |
|---|---|---|
| Thaj Av Thaj Tsam Txias (hauv qab -20 degree) | S275J2H | -20℃cuam tshuam lub zog sib xws ntsib tus qauv kom paub tseeb tias muaj kev nyab xeeb |
| Kev Txhawb Hluav Taws Xob Kev Txhawb Nqa | S275J0H | 10% -15% tus nqi qis dua |
| Kev Ntsuas Siab / Dynamic Ntsu Piping | S275J2H | Siab purity txuas ntxiv dag lub neej |
3. Kev tsim khoom thiab kev lees txais
Vuam txheej txheem
Txij li S275J2h muaj qhov qis dua cov pa roj carbon ntau dua (cet tsawg dua lossis sib npaug rau 0.40%), cov pa hluav taws xob ua ntej rau kev siv yeeb nkab tuab-walled tuaj yeem txo los ntawm 20-30 degree;
S275J0H vuam yuav tsum nruj me ntsis hydrogen tswj (cov roj av muaj hydrogen electrodes tau pom zoo).
Cov Ntawv Pov Thawj Qauv
S275J2h yuav tsum muab daim ntawv qhia xeem A -k-20
EU cov haujlwm yuav tsum muaj ntawv pov thawj CE (suav nrog kev tswj hwm lub Hoobkas tsim)
