ASTM-335 thiabSA-355MCov Qauv Txheem rau Seamless Ferritic Alloy-Steel Pipe rau Kev Pabcuam Kub Siab.
Koom nrog Boiler thiab Pressure Vessel Code.
rub tawm Google
Daim ntawv xaj khoom yuav tsum muaj 11 yam khoom hauv qab no:
1. Qhov ntau (taw, meters lossis tus naj npawb ntawm cov pas nrig)
2. Lub npe khoom siv (seamless alloy steel nominal yeeb nkab)
3. Qib (tag nrho 16: P1, P2, P22, P11, P22, P91)
4. Txoj kev tsim khoom (kub tiav lossis txias kos duab)
5. Siv ib qho ntawm cov lus qhia hauv qab no: 1), NPS thiab cov yeeb nkab phab ntsa tuab tus lej, 2), sab nraud txoj kab uas hla thiab nominal phab ntsa tuab, 3), sab nraud txoj kab uas hla thiab tsawg kawg nkaus phab ntsa tuab, 4), sab hauv txoj kab uas hla thiab nominal phab ntsa tuab, 5), sab hauv txoj kab uas hla thiab tsawg kawg nkaus phab ntsa tuab cov lus qhia kev txiav txim
6. Ntev (muab faib ua qhov ntev ruaj khov thiab qhov ntev tsis kawg)
7. Xaus kev ua tiav.
8. Cov kev cai xaiv (dej siab thiab qhov hnyav tso cai).
9. Cov ntawv qhia txog kev sim uas yuav tsum tau ua (saib A530).
10. Tus lej txheem. 11 Cov kev cai tshwj xeeb lossis lwm yam kev cai ntxiv.
Cov ntaub ntawv thiab kev tsim khoom
1. Cov kav hlau nominal tuaj yeem ua tiav kub lossis kos txias, thiab tau dhau los ntawm kev kho cua sov kawg uas tus qauv xav tau.
2. Cov hlau qib P2 thiab P12. Ob qib hlau no yuav tsum tau tsim los ntawm kev siv cov txheej txheem yaj cov noob nplej loj. Yog tias muaj cov kev cai tshwj xeeb rau qhov loj ntawm cov noob nplej lossis cov txheej txheem deoxidation, lawv yuav tsum tau pom zoo los ntawm tus neeg yuav khoom thiab tus neeg tsim khoom hlau.
3. Kev kho cua sov
1. Tsuas yog cov hlau PSC, P23, P91, P92, P122 thiab P911 xwb thiab raws li tau teev tseg, txhua qib ntawm cov kav dej nominal yuav tsum tau rov ua kom sov thiab muab rau hauv lub xeev annealed tag nrho, isothermal annealed lossis normalized thiab tempered. Yog tias muab rau hauv lub xeev normalized thiab tempered, qhov kub tsawg kawg nkaus rau P5, P5B, P9, P21 thiab P22 qib hlau yuav tsum yog 675 ° C. Qhov kub tsawg kawg nkaus rau P1, P2, P11, P12 thiab P15 qib hlau yuav tsum yog 650 ℃.
2. Kev kho cua sov kawg ntawm P92 thiab P911 qib hlau yuav tsum tau ua kom zoo li qub ntawm qhov tsawg kawg yog 1040 ℃ thiab tempering ntawm qhov tsawg kawg yog 730 ℃.