ASTM A333 / A333M Txuj Specification rau Seamless thiab Welded Steel Yeeb Nkab rau Tsawg -Kev Pabcuam Kub
ASTM A333 npogseamless (SMLS) thiab welded carbon thiab alloy steel yeeb nkabnpaj rau siv nyob rau hauvqis-kev pabcuam kub. Qib 6 yog ib qho ntawm cov qib feem ntau hauv qhov kev qhia tshwj xeeb no, tshwj xeeb tsim raucuam tshuam toughness ntawm sub-zero kub.
Cov yam ntxwv tseem ceeb ntawm A333 Gr.6:
Khoom siv: Carbon Steelnrog rau kev xyaum zoo nplej thiab normalized tshav kub kho.
Kev tsim khoom:Yuav ua tau seamless (SMLS) los yog welded. Rau SMLS yeeb nkab, cov txheej txheem tsim khoom ua kom homogeneity.
Kev Siv Tseem Ceeb:Piping systems thiab cov khoom uas ua haujlwm ntawmqhov kub thiab txias. Cov ntawv thov ib txwm muaj xws li:
Kev pabcuam Cryogenic
Cov nroj tsuag tub yees
Tsawg-tej txheej txheem piping
Skid-cov pob khoom txuas rau roj & roj hauv qhov chaw txias
Khoom tseem ceeb:Zoo heevcuam tshuam toughness ntawm -45℃(-50℃F). Qhov no yog nws tus yam ntxwv txhais.
Yam yuavtsum tau muaj Chemical Composition Requirements (rau Qib 6, ladle tsom xam):
| Element | Kev sib xyaw (%) |
|---|---|
| Carbon (C), max | 0.30 |
| Manganese (Mn) | 0.29 - 1.06 |
| Phosphorus (P), max | 0.025 |
| Sulfur (S), max | 0.025 |
| Silicon (Si) | 0.10 (min) |
| Nco tseg: | Cov yeeb nkab yog tsim los ntawmzoo grain xyaumthiab yognormalized(los yog normalized thiab tempered). |
Basic Mechanical Properties (rau Qib 6):
| Khoom | Kev xav tau |
|---|---|
| Tensile zog, min | 415 MPa (60,000 psi) |
| Yield zog, min | 240 MPa (35,000 psi) |
| Elongation (hauv 50mm), min | Saib cov lus hauv tus qauv (nws txawv nrog phab ntsa thickness) |
| Qhov tseem ceeb: | Impact Test (Charpy V-Notch):Tsawg kawg nruab nrab zog ntawm18 J (13 ft·lbf)rau peb tus qauv kuaj ntawm-45 ° F (-50 ° F). |
Common Specifications:
Qhov Loj Loj:Npog ntau yam ntawm NPS (Nominal Pipe Sizes) thiab cov sij hawm (phab ntsa thicknesses).
Delivery condition: Li qubKev kho cua sov yog qhov yuav tsum tau ua rau cov yeeb nkab seamless kom ua tiav cov qauv nplej uas xav tau thiab qis -kub toughness.
Lub ntsiab sib piv nrog lwm cov qauv:
A192/A210/A213:Cov no yog rausiab -kubkev pabcuam (boilers, heaters). Lawv tsom ntsoov rau lub zog thiab ruaj khov ntawm qhov kub siab.
A333 Gr.6:Tshwj xeeb rauqis -kubkev pabcuam. Nws tsom ntsoov rautiv thaiv brittle puaslos ntawm kev lav qhov cuam tshuam toughness ntawm sub-zero kub. Nws yogtsis yoghaum rau siab -kev siv kub.
