Cov khoom siv steel valve, tsim, tshuaj xyuas yuav tsum Steel valve dav dav

Cov khoom siv steel valve, tsim, tshuaj xyuas qhov yuav tsum tau ua Steel valve qhov kev xav tau dav dav Cov qauv no qhia txog kev ntsuas siab thiab ntsuas kub, cov khoom siv, kev tsim qauv, kev tshuaj xyuas thiab kev sim, kos cim thiab tsis muaj kev puas tsuaj thiab kho cov hlau li qub. Nyob rau hauv cov chav kawm siab nominal, qhov kev ntsuam xyuas nruab nrab ntawm qhov ntsuas qhov ntsuas kub lossis qhov ntsuas siab tuaj yeem txiav txim siab los ntawm kev sib cuam tshuam linear. Tab sis rau flanged li qub, txoj kev sib cuam tshuam linear tsis raug tso cai los txiav txim siab qhov nominal. Qhov ntsuas kub sib haum rau qhov ntsuas siab yog qhov ntsuas kub ntawm lub tsev siab, uas yog tib yam li qhov ntsuas kub ntawm qhov nruab nrab hauv nws. 1 Range Cov qauv no qhia txog qhov ntsuas kub thiab ntsuas kub, cov khoom siv, kev tsim qauv, kev tshuaj xyuas thiab kev sim, cim thiab tsis muaj kev puas tsuaj thiab kho cov hlau li qub. Cov txheej txheem no siv tau rau cov ntaub ntawv teev tseg hauv Table 1. Lub cev yuav raug cam khwb cia, forged thiab welded, qhov kawg kev sib txuas yuav flanged, threaded thiab welded, thiab rau clip-mounted thiab ib-flanged li qub. Cov txheej txheem no siv tau rau lub valve tsis muaj ntau yam: a) Nominal siab PN16 ~ PN760 li qub, nominal siab PN760 * yog tsim rau vuam kawg li qub; b) Nominal loj tsis ntau tshaj DN125. Flange txuas kawg valve thiab taub qab vuam txuas kawg valve; c) Welded kawg li qub thiab threaded kawg li qub nrog nominal loj tsis ntau tshaj DN65: d) threaded kawg li qub nrog ntsuas kub tsis tshaj 540 ℃ thiab nominal siab tsis ntau tshaj PN420; e) Flanged li qub nrog nominal siab PN16 ~ PN25, ntsuas kub tsis siab tshaj 540 ℃ 2 Cov ntaub ntawv siv tau Cov ntsiab lus hauv cov ntaub ntawv hauv qab no dhau los ua cov ntsiab lus ntawm Cov Qauv no los ntawm kev siv tus Qauv no. Rau cov ntawv sau hnub tim, tag nrho cov kev hloov kho tom ntej (tsis suav nrog errata) lossis kev hloov kho tsis muaj feem xyuam rau Tus Qauv no, txawm li cas los xij, cov tog neeg rau kev pom zoo raws li Tus Qauv no raug txhawb kom tshawb nrhiav kev siv cov qauv ntawm cov ntaub ntawv no. Rau cov ntaub ntawv tsis raug lees paub, lawv cov qauv siv tau rau tus qauv no. GB 150-1998 steel siab nkoj GB/T 193-2003 Common Thread Diameter thiab ntsia hlau series (ISO 261: 1998, MOD) GB/T 197-2003 Common thread kam rau ua (ISO 965-1: 1998, MOD) GB/T 228 TS EN ISO 6892: 1998 Cov khoom siv hlau - Kev ntsuas tensile ntawm chav sov (eqvISO 6892: 1998) Cov pa roj carbon monoxide steel kub dov tuab daim ntawv thiab dav strip (neq TOCT 1577) GB / T 1047-2005 Piping ntsiab DN (nominal dimensions) - Lus Txhais thiab kev xaiv (ISO 6708: 1996,> GB / T 1048-2005 Yeeb Nkab PN (nominal siab) txhais thiab xaiv (ISO/CD7268: 1996.)> Tsawg alloy steel ntawv rau cov hlab ntsha siab siab Stainless hlau kub dov steel ntawv (neq JIS 64304: 1984) GB / T 6654-1996 steel phaj rau siab hlab ntsha GB / T 7306-2000 Yeeb nkab threads, 55 ° kaw (eqv ISO 7-1: 1994) GB / T 9113 ~ 9123-2000 steel yeeb nkab flange Specification rau GB / T 9124-2000 steel yeeb nkab flanges GB / T12220 Universal Valve cim (GB / T12220-1989,> GB / T12221 hlau valve qauv ntev (GB / T12221--2005, ISO 5752; 1982 , MOD) GB / T 12228 Valve carbon steel forgings technical conditions GB/T 12229 general valve carbon steel castings technical specifications GB/T 12230 general purpose valve austenitic steel castings technical specifications GB/T 12716-2002 60 ° kaw yeeb nkab xov (eqv ASME B1.20.1: 1992) GB TS EN ISO 5208: 1982 Kev ntsuas qhov dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav hlau valve siab kuaj (Neq ISO 5208: 1982) Stainless hlau seamless steel raj rau cov dej thauj GB / T 14976-2002 GB / T 1751-1992 ) Cov qauv no siv rau ntau yam ntaub ntawv teev nyob rau hauv Table 1. Lub cev yuav raug cam khwb cia, forged los yog welded, thiab qhov kawg kev sib txuas tej zaum yuav flanged, threaded los yog welded, raws li zoo raws li li qub rau clip-on thiab ib leeg-flange mounting. Cov nqe lus hauv cov ntaub ntawv hauv qab no dhau los ua cov ntsiab lus ntawm Tus Qauv no los ntawm kev siv rau Tus Qauv no. Rau cov ntawv sau hnub tim, tag nrho cov kev hloov kho tom ntej (tsis suav nrog errata) lossis kev hloov kho tsis muaj feem xyuam rau Tus Qauv no, txawm li cas los xij, cov tog neeg rau kev pom zoo raws li Tus Qauv no raug txhawb kom tshawb nrhiav kev siv cov qauv ntawm cov ntaub ntawv no. Cov qauv no siv tau rau txhua qhov kev siv tsis tau sau tseg. 1 Range Cov qauv no qhia txog qhov ntsuas kub thiab ntsuas kub, cov khoom siv, kev tsim qauv, kev tshuaj xyuas thiab kev sim, cim thiab tsis muaj kev puas tsuaj thiab kho cov hlau li qub. Cov txheej txheem no siv tau rau cov ntaub ntawv teev tseg hauv Table 1. Lub cev yuav raug cam khwb cia, forged thiab welded, qhov kawg kev sib txuas yuav flanged, threaded thiab welded, thiab rau clip-mounted thiab ib-flanged li qub. Cov txheej txheem no siv rau lub valve tsis muaj ntau yam: a) Nominal siab PN16--PN760 valve, nominal siab PN760 yog tsim rau vuam kawg li qub; b) Flanged kawg li qub thiab pob tw welded kawg li qub ntawm nominal loj tsis ntau dua DN1250; c) Welded kawg li qub thiab threaded kawg li qub nrog nominal loj tsis ntau tshaj DN65: d) li qub nrog threaded kev twb kev txuas xaus uas nws ntsuas kub tsis ntau tshaj 540 ℃ thiab nominal siab tsis ntau tshaj PN420; e) Flanged li qub nrog nominal siab PN16 ~ PN25, ntsuas kub tsis siab tshaj 540 ℃ 2 Cov ntaub ntawv siv tau Cov ntsiab lus hauv cov ntaub ntawv hauv qab no dhau los ua cov ntsiab lus ntawm Cov Qauv no los ntawm kev siv tus Qauv no. Rau cov ntawv sau hnub tim, tag nrho cov kev hloov kho tom ntej (tsis suav nrog errata) lossis kev hloov kho tsis muaj feem xyuam rau Tus Qauv no, txawm li cas los xij, cov tog neeg rau kev pom zoo raws li Tus Qauv no raug txhawb kom tshawb nrhiav kev siv cov qauv ntawm cov ntaub ntawv no. Cov qauv no siv tau rau txhua qhov kev siv tsis tau sau tseg. GB 150-1998 steel siab nkoj GB/T 193-2003 Common Thread inch thiab pitch series (ISO 261:1998, MOD) GB/T 197-2003 Common thread tolerance (ISO 965-1; 1998, MOD) GB/T 228 -2002 Cov ntaub ntawv hlau - Kev ntsuas Tensile ntawm chav tsev kub (eqv IS0 6892: 1998) Cov pa roj carbon monoxide steel kub dov tuab daim ntawv thiab dav sawb (neq TOCT 1577) GB / T 1047-2005 Piping ntsiab DN (nominal dimensions) - Lus Txhais thiab kev xaiv (ISO 6708: 1995,> GB / T 1048-2005 Yeeb Nkab PN (nominal siab) txhais thiab xaiv (ISO / CD 7268: 1996.)> Cov hlau tsis tshua muaj hlau rau cov hlab ntsha siab siab Stainless hlau kub dov steel ntawv ( JIS 64304: 1984) Hlau daim hlau rau cov hlab ntsha siab GB / T 7306-2000 Sealing yeeb nkab xov (eqv 1SO 7-1: 1994) GB / T 9113-- 9123-2000 steel yeeb nkab flange Specification rau GB / T 9124-2000 steel Cov yeeb nkab flanges GB / T 12220 Universal Valve cim (GB / T 12220-1989,> GB / T12221 Hlau valve qauv ntev (GB / T12221--2005, ISO 5752: 1982 MOD) GB / T 12228 general valve carbon steel forgings technical conditions GB/T 12229 general valve carbon steel castings technical specifications GB/T 12230 general purpose valve austenitic steel castings technical specifications GB/T 12716-2002 60° kaw yeeb nkab xov (eqv ASME B1.20.1: 1992) GB/T 13927 General valve siab Test (ney ISO5X208: 1982) Stainless hlau seamless steel raj rau kev thauj mus los ntawm cov kua dej Cov yam ntxwv ntawm li qub - lub qhov (socket) vuam kev sib txuas thiab cov kav dej xaus - qhov ntev JB 4726--2000 forgings ntawm carbon thiab tsis tshua muaj hlau hlau rau cov hlab ntsha JB 4727-200. Tsis tshua muaj kub siab cov hlab ntsha nrog carbon thiab tsis tshua muaj hlau alloy forgings JB 4728-200. Stainless hlau forgings rau cov hlab ntsha siab Specification rau JB / T 5263 Fais fab chaw nres tsheb Valve Steel Castings (ney ANSI / ASTM A217M) JB / T 6439 Valve compression cam khwb cia hlau magnetic particle soj ntsuam Radiographic soj ntsuam ntawm compression cam khwb cia hlau qhov chaw ntawm JB / T 6440 Valve JB / T 6902 valve cam khwb cia hlau - xeem txoj kev rau kua nkag JB / T '6903 valve forged steel qhov chaw ultrasonic tshuaj xyuas txoj kev JB / T 7248 valve qis kub cam khwb cia steel specifications JB / T 7927 valve steel castings zoo li yuav tsum tau zoo 3 Siab rau qhov ntsuas kub 3.1 Txheej txheem cej luam 3.1.1 siab-kub ntsuas 3.1.2 Lub siab-kub ntsuas yuav tsum yog raws li teev nyob rau hauv Table 2, thiab yuav tsum tau raws li teev nyob rau hauv GB/T 9124-2000 tshwj tsis yog raws li teev nyob rau hauv Table 2. Standard siab theem li qub li qub uas ua tau raws li cov Cov kev cai ntawm tus qauv no, uas tsis yog cov uas ua tau raws li NDT cov cai ntawm Cov Ntawv Ntxiv C li qub, raug xaiv los ua cov txheej txheem siab hauv chav kawm li qub nrog kev ntsuas siab-kub raws li tau teev tseg hauv 3.1.1. 3.1.3 Tshwj xeeb qib siab li qub li qub uas ua tau raws li qhov yuav tsum tau ua ntawm 3.1.2 thiab ua tau raws li NDT cov cai ntawm Cov Ntawv Ntxiv C li qub muaj qhov ntsuas kub-kub raws li teev hauv cov lus D.1L txog D.12 hauv Cov Ntawv Ntxiv D. Tshwj xeeb siab ntsuas ua tsis siv rau flanged kawg li qub. 3.1.4 Intermediate rated valve Nyob rau hauv nominal siab hauv chav kawm ntawv qhov tseem ceeb, qhov kev ntsuam xyuas nruab nrab ntawm cov teev qhov ntsuas kub los yog qhov ntsuas siab tuaj yeem txiav txim siab los ntawm kev sib cuam tshuam. Tab sis rau flanged li qub, txoj kev sib cuam tshuam linear tsis raug tso cai los txiav txim siab qhov nominal. 3.1.5 Kev sib dhos ntawm welds Valves welded tag nrho los yog ib feem nrog castings, forgings, rods, daim hlau los yog cov kav dej yuav tsum ua raws li cov cai hauv qab no: a) Vuam thiab kev kho cua sov ntawm welds yuav tsum tau ua raws li cov kev cai ntawm GB 150-1998 ; b) Weld soj ntsuam thiab txais yuav tsum ua raws li cov kev cai ntawm GB 150-1998; c) Cov kev cai saum toj no tsis siv rau kev sib khi lossis txuas vuam, xws li vuam ntawm thim rov qab cov ntsaws ruaj ruaj, lub nplhaib lub rooj zaum, nqa lub log thiab cov khoom sib txuas.