Tus qauv A691 npog hluav taws xob fusion welded carbon steel thiab alloy steel kav siv nyob rau hauv qhov kub thiab txias siab. Cov khoom siv ntawm cov yeeb nkab steel no yog CR-MO cov hlau tsis muaj cua sov, qhov twg 2-1/4CR sawv cev rau qib ntawm cov yeeb nkab steel, tshwj xeeb tshaj yog 1 1/4% chromium thiab 1/2% molybdenum steel. CL22 sawv cev rau lub xeev kev kho cua sov.
Tsis tas li ntawd, txoj kev tsim khoom ntawm ASTM A691 2-1/4CR qib welded steel yeeb nkab yog EFW (hluav taws xob fusion vuam), cov lus qhia tshwj xeeb ncav cuag ntau dua 406mm, thiab lub voj voog ntau lawm yog li 20 hnub, xyuas kom meej tias cov khoom specifications yog ua tiav thiab tuaj yeem ua tau raws li qhov xav tau ntawm cov neeg siv khoom sib txawv.
Cov ntaub ntawv khoom
Tshuaj muaj pes tsawg leeg ntawm ASTM A691 Qib 2-1/4CR EFW Pipes
| ASTM A691 Cov Lus Qhia Tshwj Xeeb | Qib 2 1/4CR |
| C | 0.05-0.15 |
| Mn | 0.30-0.60 |
| P | 0.025 |
| S | 0.025 |
| Si | 0.50 |
| Cr | 2.00 - 2.50 |
| Mo | 0.90 - 1.10 |
Mechanical Properties of ASTM A691 Qib 2-1/4CR Alloy Steel EFW Pipes
| ASTM A691 Cov Lus Qhia Tshwj Xeeb | Qib 2 1/4CR |
| Tensile (MPa) | 515 - 690 |
| Tawm tswv yim (MPa) | 310 min |
| Elong. (50 hli) | 18% min |
| Reduc'n ntawm Cheeb Tsam * | 40% min |
Cov khoom tso tawm
ASTM A691 Qib 2-1/4CR Alloy Steel EFW Pipes
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Q: Koj puas tuaj yeem npaj cov khoom xa tuaj?
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Q: Koj lub sijhawm xa khoom ntev npaum li cas?
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