Cov qauv txheej txheem thiab cov qauv tsis zoo
Q1: Dab tsi yog qhov pom kev pov hwm rau A106B cov yeeb nkab sab nraud ntawm lub taub (OD)?
A1:Sab nraum Dev thev rau A106B cov yeeb nkab tau teev nyob rau Astm A530, tus khub tshwj xeeb rau A106. Rau NPS 1 {- 1/2 thiab me dua, kev thev taus yog ± 0.015 nti (± 0.38 hli). Rau NPS 2 rau NPS 8, kev thev taus yog ± 0.031 nti (± 0.79 hli). Rau NPS 8 rau Nps 18, kev thev taus yog ± 0.062 nti (± 1.59 hli). Rau diamool loj, kev ua siab ntev yog feem pua ntawm OD. Cov kev ntsuas nruj yog qhov tseem ceeb rau kev ua kom haum kom haum thaum lub ntsej muag thiab nrog cov ntsiab lus tsis zoo thiab cov ntsiab lus tsis muaj zog hauv cov raj luj.
Q2: Cov phab ntsa tuab npaum li cas ua rau lub yeeb nkab uas tau txhais rau A106b Seamless Yeeb Nkab?
A2:Phab ntsa Thuab trealness trealances rau A106b Seamless Yeeb yog tseem tswj hwm los ntawm AQUM A530. Tus qauv qhia meej tias lub phab ntsa tuab ntawm txhua qhov taw tes yuav tsum tsis txhob muaj ntau dua 12,5% nyob rau hauv cov nominal ntsa tuab, muab cov Phab Ntsa Thickness tsis tsawg tshaj li 87.5% ntawm cov nominal ntsa. Qhov no txhais tau tias muaj kev hloov pauv, tab sis nws raug tswj hwm kom ntseeg tau tias cov yeeb nkab tuaj yeem lis cov tsim tsim. Rau cov ntawv thov tseem ceeb, cov neeg yuav tuaj yeem hais kom meej dua "Phab Ntsa Tsawg Kawg"
Q3: Dab tsi yog qhov yuav tsum tau ua kam rau random thiab ob chav random ntev ntawm A106B?
A3:Rau random ntev, uas feem ntau yog los ntawm 16 mus rau 22 ko taw (4.8 rau 6.2+2 nti (50 hli) / -0 ntiv tes. Qhov no txhais tau tias kav ntev yuav yog nyob rau ntawm lossis me ntsis saum toj no qhov kev txiav txim ntev, kom tsis muaj ib daim luv luv xa tuaj. Rau ob chav random ntev, uas ib txwm muaj 35 txog 40 ko taw (10.7 txog 12.2 metres), tib qho kev ua kom zoo tshaj plaws siv. Qhov xwm txheej nyob ntev li ntev yog qhov tseem ceeb rau kev npaj phiaj xwm kev teeb meem, thiab txo cov pov tseg thaum lub teeb tsa cov raj xa dej ntev ntev.
Q4: Yuav ua li cas txoj cai tiag
A4:ASTM A530 ua kom tau tias cov yeeb nkab A106b yuav tsum raug coj ncaj ncaj. Qhov tshwj xeeb kev tsim nyog rau txoj kev ncaj yog txhais tias yog qhov tsis zoo tshaj 0.05% ntawm qhov ntev rau NPS 2 thiab loj dua. Piv txwv li, 40-ko taw (12.2-meter) ob chav random ntev yeeb nkab tuaj yeem muaj cov hneev nti ntau lossis khoov ntawm 0.24 ntiv tes (6 hli). Qib theem no yog qhov tseem ceeb yog qhov tseem ceeb rau kev yooj yim ntawm kev teeb tsa, thiab ua kom muaj kev ncaj ncees ntawm cov piping rack, tiv thaiv tsis txaus siab rau kev txhawb nqa.
Q5: Qhov kawg ntawm A106b yeeb nkab ua tiav los xyuas kom muaj kev sib txuas tau zoo?
A5:Qhov xaus ntawm A106B cov yeeb nkab feem ntau ua tiav dawb -}}}}} _ series (T & C), nyob ntawm qhov kev txiav txim kom ua. Rau vuam, tus qauv yuav tsum tau bevel kaum sab xis ntawm 37.5℃± 2.8 mm ± 0.8 hli) kom ntseeg tau zoo heev weld sib koom tes. Cov yeeb nkab xaus yuav tsum tseem yog square txiav nyob rau hauv ib qho kev tsim nyog rau kev tsim nyog kom tsis txhob khoob. Rau cov ntawv xaus, cov xov yuav tsum ua raws li arti / asme b1.20.1 tus qauv kom ntseeg tau tias xau nrog cov ntaub ntawv sib txuas nrog cov couplings.
