ASME B16.5 Chav Kawm 400 qhov muag tsis pom flangesua hauj lwm tshwj xeeb niche: cais cov yeeb nkab kawg, valve txiav, thiab lub siab lub nkoj nozzles ntsuas rau nruab nrab ua hauj lwm siab mus txog 980 psi (67.6 bar) ntawm ambient kub. HT PIPE muab txhua yam sib txawv thiab nplai ntawm flanges. Thov koj txhob xav li castiv tauj pebrau cov lus qhia ntxiv txog cov khoom thiab tus nqi.
Cov Ntsiab Cai Tsim Qauv & Cov Lus Qhia Txog Kev Muag Khoom
1. Cov qauv xaiv cov khoom
Qhov muag tsis pom flanges hauv Chav Kawm 400 qhov kev pabcuam dais tag nrho cov txheej txheem hydrostatic siab thoob plaws lawv qhov chaw tsis muaj - tho qhov chaw. Kev xaiv qib khoom yuav tsum ua raws li ASTM piping specifications:
ASTM A105 Cov Lus Qhia:Txheem forged carbon steel rau ambient thiab siab -kev pabcuam kub.
ASTM A350 LF2 Cov Lus Qhia:Tsawg-kub carbon steel ntau nyob rau hauv North American txias- huab cua kev teeb tsa thiab kev ua cov pa roj cryogenic.
ASTM A182 F316 / 316L lossis F304 / 304L:Stainless hlau qib tau teev tseg rau corrosive refining, tshuaj tuav, los yog offshore ib puag ncig.
2. Hom ntsej muag: RF vs RTJ
Raised ntsej muag (RF):Nta ntawm 0.25-nti (6.4 mm) tsa ntu nrog du lossis serrated concentric tiav (feem ntau 125-250 AARH) rau kauv qhov txhab gaskets.
Nplhaib-Hom Joint (RTJ):Features ib tug precision -machined metallic zawj tsim rau hlau nplhaib gaskets (xws li, Style R los yog RX). RTJ cov ntsej muag yog dav nyiam nyob rau hauv siab -siab Gulf ntug dej hiav txwv offshore platforms thiab siab -kub refinery loops vim superior seal kev ncaj ncees nyob rau hauv cyclic loading.
Siab -Tsuas Ua Haujlwm Li Cas
Ib qho kev xav tsis zoo hauv kev tsim cov kav dej yog kho "Class 400" raws li kev ua haujlwm ruaj khov ntawm 400 psi. Hauv kev muaj tiag, kev ua haujlwm siab txwv tsis pub hloov pauv ntau raws li kev ua haujlwm kub thiab xaiv cov khoom siv ntawm ASME B16.5 Table 2 kev ntsuas.
ASTM A105 / A350 LF2 (Carbon Steel - Pawg 1.1)
-20 ° F txog 100 ° F (-29 ° txog 38 ° F):980 hli (67.6 bar)
200 ° F (93 ° F):925 hli (63.8 bar)
400 ° F (204 ° F):825 hli (56.9 bar)
600 ° F (315 ° F):720 psig (49.6 bar)
800℃F (426 degree):510 hli (35.2 bar)
ASTM A182 F316 / F316L Stainless hlau - Pab Pawg 2.2
-20 ° F txog 100 ° F (-29 ° txog 38 ° F):960 psig (66.2 bar)
200 ° F (93 ° F):815 hli (56.2 bar)
400 ° F (204 ° F):695 hli (47.9 bar)
600 ° F (315 ° F):605 hli (41.7 bar)
800℃F (426 degree):550 psig (37.9 bar)
Dimensional Tolerances (ASME B16.5 Nqe 7)
Kev soj ntsuam zoo raws tu qauv cia siab rau kev tswj cov txheej txheem machining kam rau ua:
Sab nraud txoj kab uas hla (O):
NPS 24 thiab me dua: +/- 0.06 hauv (+/- 1.6 mm)
Flange Thickness (T):
NPS 18 thiab me dua: +0.12 hauv / -0.00 hauv (+3.0 mm / -0.0 mm)
NPS 20 thiab loj dua: +0.20 hauv / -0.00 hauv (+5.0 mm / -0.0 mm)
Bolt Circle Diameter (C):+/- 0.06 hauv (+/- 1.6 mm)
Bolt Hole Center Offset:Qhov siab tshaj plaws ntawm 0.03 nyob rau hauv (0.8 mm) ntawm qhov chaw nyob ib sab.
Raised ntsej muag Diameter (R):+/- 0.04 hauv (+/- 1.0 mm)
ASME B16.5 Chav Kawm 400 qhov muag tsis pom Flange Dimensions
