ASTM A335 Txuj Kev Taw Qhia
ASTM A335/A335M-24: Txheem Specification rau Seamless Ferritic Alloy-Steel Pipe rau Kev Pabcuam Kub Kub
Txheej txheem cej luam
ASTM A335 / A335M yog tus qauv kev qhia tshwj xeeb tshaj tawm los ntawm ASTM International rau seamless ferritic alloy - cov yeeb nkab steel npaj rau siab - kev pabcuam kub. Cov qauv no tau pom zoo rau lub Plaub Hlis 1, 2024, thiab tau tshaj tawm thaum lub Plaub Hlis 2024, nrog rau cov ntawv dhau los tau pom zoo xyoo 2023.
Scope
1.1 Qhov kev qhia tshwj xeeb no suav nrog cov phab ntsa nominal thiab cov phab ntsa yam tsawg kawg nkaus seamless ferritic alloy- steel yeeb nkab npaj rau siab - qhov kub thiab txias. Cov yeeb nkab xaj rau qhov kev qhia tshwj xeeb no yuav tsum tsim nyog rau kev khoov, flanging (vanstoning), thiab kev ua haujlwm zoo sib xws, thiab rau fusion vuam. Kev xaiv yuav nyob ntawm tus qauv tsim, kev pabcuam, cov khoom siv kho tshuab, thiab siab -tus yam ntxwv kub.
1.2 Ntau qib ntawm ferritic steels (saib Lus Cim 1) raug them. Lawv cov ntawv sau tau muab rau hauv Table 1.
CEEB TOOM 1: Ferritic steels hauv qhov kev qhia tshwj xeeb no txhais tau tias qis- thiab nruab nrab- cov hlau alloy uas muaj txog li thiab suav nrog 10% chromium.
1.3 Cov kev xav tau ntxiv (S1 txog S9) ntawm qhov kev xaiv tau raug muab. Cov kev xav tau ntxiv S1 txog S6 hu rau cov kev xeem ntxiv uas yuav tsum tau ua, thiab thaum xav tau, yuav tsum tau teev nyob rau hauv qhov kev txiav txim ua ke nrog cov lej ntawm cov kev xeem uas yuav tsum tau ua.
1.4 Cov txiaj ntsig tau teev tseg hauv SI units lossis nti -pound units yuav tsum raug suav tias yog tus qauv. Nyob rau hauv cov ntawv nyeem, SI units tau qhia nyob rau hauv brackets. Cov txiaj ntsig tau teev nyob rau hauv txhua qhov system yuav tsis muaj qhov sib npaug; Yog li ntawd, txhua qhov system yuav tsum siv nws tus kheej ntawm lwm tus. Kev sib xyaw cov txiaj ntsig los ntawm ob lub tshuab yuav ua rau tsis yog -ua raws li tus qauv. Cov ntiv tes - phaus units yuav tsum siv tshwj tsis yog lub npe "M" ntawm qhov kev qhia tshwj xeeb no tau teev tseg hauv qhov kev txiav txim.
CEEB TOOM 2: Tus tsim dimensionless NPS (nominal yeeb nkab loj) tau raug hloov nyob rau hauv cov qauv no rau cov lus ib txwm xws li "nominal inch," "size," thiab "nominal size."
Txuj kev cais
Lub npe txheem: Standard Specification for Seamless Ferritic Alloy-Steel Pipe for High-Tsev Kev Pabcuam
Standard NumberQauv: ASTM A335 / A335M
Hnub tim tshaj tawm: Lub Plaub Hlis 1, 2024
Cov ntaub ntawv siv tau: Ferritic steels nrog chromium cov ntsiab lus txog li 10%
Qib khoomP1, P2, P5, P9, P11, P22, P91, P92, thiab lwm yam (16 qib hauv tag nrho)
Daim ntawv thov: Tsim nyog rau siab - daim ntawv thov kub xws li cov khoom siv boiler, cov kav dej fais fab, thiab cov khoom siv petrochemical
Cov qauv no tau siv dav hauv kev lag luam tsim hluav taws xob rau qhov tseem ceeb siab - qhov kub thiab txias xws li superheaters, reheaters, thiab chav kav dej ua haujlwm ntawm qhov kub txog li 650℃.
