ASTM D975 yog cov roj specification, tsis yog cov yeeb nkab specification. Nws txhais cov khoom uas yuav tsum tau muaj ntawm cov roj diesel hauv qib No. 1-D, Tsis yog. 2-D, thiab Tsis yog. 4-D kom lub cav khiav zoo thiab ua haujlwm zoo. Cov yeeb nkab steel uas thauj thiab khaws cov roj no yog tswj hwm los ntawm cov qauv sib cais. Kab lus no piav qhia txog kev sib raug zoo ntawm cov qauv roj thiab cov qauv yeeb nkab, thiab muab cov engineers thiab cov neeg yuav khoom kom paub meej txog kev xaiv cov yeeb nkab steel rau cov roj diesel.
Dab tsi ASTM D975 Tiag npog
ASTM D975 tsim cov khoom tsim nyog rau cov roj diesel: tus lej cetane, cov ntsiab lus sulfur, ntau yam distillation, flash point, viscosity, thiab lwm yam ntxwv. Peb qib qhia txog kev pab cuam sib txawv. Tsis yog. 1-D yog roj tsis hloov pauv rau siab- lub cav ceev hauv huab cua hloov pauv; Tsis yog. 2-D yog qhov dav dav- lub hom phiaj nruab nrab distillate rau feem ntau ntawm - txoj kev thiab kev lag luam cav; Tsis yog. 4-D yog roj hnyav rau qis- ceev thiab nyob twj ywm xyaw. Thaum ib daim duab hais tias ASTM D975, nws qhia meej txog cov roj zoo, thiab cov khoom siv yeeb nkab yuav tsum tau xaiv nyias.
Siv tau Steel Pipe Standards
Diesel roj tshuab tsis yog - cov kev pabcuam hluav taws xob ua kua ua kua, yog li feem ntau cov roj tuav siv cov pa roj carbon steel yeeb nkab uas ua tau raws li qhov yuav tsum tau ua ntawm cov kav dej.
| Txuj | Daim ntawv khoom | Hom Kev Siv Hluav Taws Xob Hluav Taws Xob |
|---|---|---|
| ASTM A106 Qib B | Seamless carbon hlau | Siab - siab hloov roj thiab cov txheej txheem kab |
| ASTM A53 Qib B | Welded thiab seamless | Tsawg- cov kab hluav taws xob siab thiab cov kav dej siv dav dav |
| API 5L Qib B / X42 | Seamless thiab welded kab yeeb nkab | Ntev -qhov deb ntawm cov roj hloov thiab cov kav dej hauv lub davhlau ya nyob twg |
| ASTM A333 Qib 6 | Seamless thiab welded, tsis tshua muaj kub | Txias- huab cua cov kab hluav taws xob thiab kev sib txuas ntawm lub tank cia |
| ASTM A671 / A672 / ASTM A671 / ASTM A671 / ASTM A671 / ASTM A671 / ASTM A671 / ASTM A671 / ASTM A671 / ASTM A671 / ASTM A671 / ASTM A671 / ASTM A671 / ASTM A671 / ASTM A671 / ASTM A671 / A672 / ASTM A671 / ASTM A671 / ASTM A671 / ASTM A671 / ASTM A671 / A672 / ASTM A671 / ASTM A671 / A672 / ASTM A671 / ASTM A671 / ASTM A671 / ASTM A671 / A672 / ASTM A671 / A672 / ASTM A671 / ASTM A671 / A672 / ASTM A671 / ASTM A671) thiab ASTM A671 | Electric fusion welded phaj yeeb nkab | Loj - txoj kab uas hla roj headers thiab tank ua liaj ua teb kav |
Rau feem ntau cov kev pabcuam roj av, ASTM A106 Qib B seamless lossis API 5L Qib B kab yeeb nkab npog lub hnab ntawv ua haujlwm, nrog cov phab ntsa tuab xam rau qhov tsim siab ntawm cov kav dej siv tau xws li ASME B31.3 rau cov txheej txheem cov nroj tsuag lossis B31.4 rau cov kav dej ua kua.
Cov txheej txheem xaiv cov khoom siv
Plaub yam tsav cov yeeb nkab qib thiab phab ntsa thickness txiav txim siab. Ua ntej, tsim lub siab thiab kub: cov kab hluav taws xob feem ntau khiav ntawm nruab nrab siab, tab sis cov twj tso kua mis tawm thiab hloov cov kab yuav tsum muaj cov phab ntsa tuab txaus. Thib ob, roj chemistry: leej faj nyob rau hauv diesel tuaj yeem tsim cov khoom corrosive, thiab qis -sulfur thiab biodiesel blends hloov cov corrosivity profile; ib qho kev tiv thaiv corrosion ntawm 1.5 mus rau 3 hli yog ib qho kev ua haujlwm ntev. Thib peb, ambient kub: nyob rau hauv cov cheeb tsam txias, cov pa roj carbon steel yeeb nkab yuav tsum tau teev nrog tsawg- kub tej yam kev mob, uas yog qhov twg ASTM A333 Qib 6 siv. Plaub, kev sib raug zoo nrog fittings thiab li qub: cov yeeb nkab qib yuav tsum phim cov flange, haum, thiab qhov ntsuas valve siv hauv lub cev.
Internal thiab External Corrosion Control
Internal corrosion nyob rau hauv diesel systems feem ntau yog me me piv nrog cov roj crude kab, tab sis dej paug, microbial kev loj hlob, thiab biodiesel degradation yuav tsim corrosive tej yam kev mob ntawm lub tank hauv qab thiab stagnant seem. Sab nrauv corrosion yog qhov kev pheej hmoo loj dua rau cov kab faus, thiab tau tswj hwm nrog cov txheej txheem tiv thaiv xws li fusion bonded epoxy lossis peb- txheej polyethylene, ua ke nrog kev tiv thaiv cathodic. Cov yeeb nkab tshwj xeeb yuav tsum tau hais txog cov txheej txheem txheej txheej thiab seb txoj kab puas yog faus, saum av, lossis hauv qhov ua vaj tse.
Vuam thiab Fabrication
Cov pa roj carbon steel roj piping yog welded los ntawm GTAW rau cov hauv paus hla thiab SMAW lossis GMAW rau kev hla dhau, nrog kev sib koom ua haujlwm thiab qib tshuaj ntsuam xyuas los ntawm cov kav dej. Welders yuav tsum tsim nyog rau ASME Tshooj IX lossis ISO 9606, thiab cov txheej txheem tsim nyog raws li ASME BPVC Tshooj IX lossis ISO 15614-1. Kev ntsuam xyuas hluav taws xob lossis ultrasonic feem ntau tau teev tseg rau cov kab saum toj kawg nkaus lub siab pib txhais los ntawm txoj haujlwm code.
Kev xeem thiab ntawv pov thawj
Txhua qhov kev txiav txim yeeb nkab yuav tsum suav nrog kev sim hydrostatic raws li cov qauv yeeb nkab, tensile thiab tshuaj ntsuam xyuas cov ntaub ntawv ib qho cua sov, thiab rau qis - qhov kev pab cuam kub, Charpy V-notch cuam tshuam rau ASTM A370. Daim ntawv pov thawj cov ntaub ntawv pov thawj nrog cov lej ntsuas kub thiab qhov ntsuas qhov tseeb muab cov ntaub ntawv pov thawj xav tau rau cov kav dej siab thiab rau kev pov hwm thiab kev tswj xyuas.
Hom Diesel Fuel System Applications
Cov yeeb nkab steel rau cov kev pab cuam diesel tshwm nyob rau hauv refinery thiab davhlau ya nyob twg hloov kab, tank ua liaj ua teb headers thiab manifolds, fais fab nroj tsuag hnub- tank thiab generator roj systems, marine bunkering kab, ua liaj ua teb thiab tsuas roj faib network, thiab thaum muaj xwm ceev generator systems nyob rau hauv lub tsev. Nyob rau hauv txhua rooj plaub, tib lub logic siv: phim cov roj qib nyob rau hauv cov txheej txheem cov ntaub ntawv, ces xaiv cov yeeb nkab txheem, phab ntsa thickness, corrosion kuj, thiab qib soj ntsuam los ntawm cov kav dej code.
FAQ
Puas yog ASTM D975 tus qauv steel yeeb nkab?
No. ASTM D975 yog cov specification rau cov roj diesel. Cov yeeb nkab steel rau cov tshuab hluav taws xob yog xaiv los ntawm cov kav dej siab xws li ASTM A106, ASTM A53, lossis API 5L.
Dab tsi yog qhov zoo tshaj plaws yeeb nkab qib rau diesel roj hloov kab?
ASTM A106 Qib B seamless yog qhov kev xaiv ntau tshaj plaws rau cov txheej txheem thiab hloov cov kab, nrog API 5L Qib B ua lwm txoj hauv kev lag luam rau cov kav dej ntev dua. Tsawg-kev pabcuam kub hu rau ASTM A333 Qib 6.
galvanized yeeb nkab puas siv tau rau cov roj diesel?
Galvanized yeeb nkab feem ntau raug zam rau kev pabcuam roj vim tias zinc txheej tuaj yeem cuam tshuam nrog cov khoom siv roj thiab tsim cov deposits; dub carbon steel yeeb nkab nrog txheej txheej yog cov qauv kev coj ua.
Puas yog cov kav dej diesel xav tau kev tiv thaiv cathodic?
faus steel kab nqa cov diesel yuav tsum tau tiv thaiv nrog cov txheej txheem sab nraud thiab cathodic tiv thaiv los tswj kev xeb sab nraud, ua raws li kev coj ua zoo ib yam li lwm cov kav dej hydrocarbon.
Dab tsi phab ntsa thickness yuav tsum siv cov roj diesel?
Phab ntsa thickness yog xam los ntawm kev tsim siab thiab tso cai rau kev ntxhov siab ntawm cov kav dej, ntxiv rau kev tiv thaiv corrosion uas qhia txog cov roj sulfur cov ntsiab lus, dej nqa mus, thiab kev pab cuam lub neej. Ib qho nyiaj 1.5 txog 3 hli yog qhov raug.
