Feem ntau,cev dubthiab carbon steel yeeb nkabmuaj txog tib cov txheej txheem rau vuam.Qhov ntawd yog yog tias koj tab tom tham txog kev vuam dav dav thiab tsis yog rau qee daim ntawv thov tshwj xeeb xws li txias txias heev.Cov yeeb nkab dub tsis yog qhov tshwj xeeb tab sis yog lub ntsiab lus siv feem ntau siv los ntawm cov kav dej kom paub qhov txawv ntawm cov yeeb nkab steel los ntawm galvanized steel yeeb nkab.

Cov yeeb nkab dub feem ntau muaj qhov sib xyaw zoo ib yam li ASTM A-53 yeeb nkab.Qhov sib txawv ntawm A-53 thiab cov yeeb nkab steel zoo li A-106 yog ze ze tias qee cov yeeb nkab tau raug cim kom tau raws li ob qho kev qhia tshwj xeeb.Cov yeeb nkab dub thiab A 53 tuaj yeem ua seamless lossis welded seam thaum A106 seamless.

Dub steel yeeb nkab yog cam khwb cia los ntawm ntau qib ntawm ductile los yog malleable hlau, whereas carbon steel yeeb nkab feem ntau wrought welded los yog seamless.Cov yeeb nkab dub yog siv rau hauv av lossis submerged daim ntaub ntawv thiab rau cov kav dej loj thiab cov ceg ntoo uas raug cov kua qaub.Nws kuj yog ib qho kev siv cam khwb cia hlau yeeb nkab thiab fittings rau cov kav dej txias hauv nroog 4 "inch thiab saum toj no.Kev lag luam tuag casting tsis tsim nyog rau cov kab uas raug nthuav tawm, kev cog lus, thiab kev co tshwj tsis yog cov yeeb nkab hnyav heev.Nws tsis haum rau cov chav dej superheated lossis rau qhov kub siab tshaj 575 degrees F. Cov yeeb nkab hlau hauv cov ntawv thov hauv av (xws li cov kav dej phwj) feem ntau muaj lub tswb thiab spigot xaus thaum cov yeeb nkab feem ntau muaj flanged kawg.

Ntxiv rau tag nrho cov saum toj no koj tuaj yeem koom nrog stainless hlau tank (xov) nrog threaded tooj liab adapters ncaj qha whereas koj tsis tuaj yeem koom nrog galvanized yeeb nkab thiab tooj liab.Qhov ntawd yuav corrode tshwj tsis yog tias koj siv cov txuas tshwj xeeb.Kuv tsis nco qab qhov lawv hu lawv.Lawv inert yog li koj tsis tau txais cov corrosion.Kuv paub tseeb tias lwm tus tuaj yeem pab lub npe.Lawv muag lawv hauv cov kav dej hauv tsev.Kuv tsis tau pom lawv nyob hauv tsev depot.Qhov tseeb koj yuav tsum tsis txhob sib tov dub thiab galvanized nyob rau hauv tib lub khiav.Muab sijhawm txaus rau lawv thiab lawv yuav corrode thiab xau ntawm cov pob qij txha.Lawv tsis paub tias thaum lawv khiav cov kab roj hauv kuv lub tsev thiab sib xyaw ua ob peb galvanized fittings txog ib puas xyoo dhau los.Los yog lawv paub tab sis xav tias lawv yuav tuag thiab faus thaum lub sij hawm lub tshuab ntxhua khaub ncaws pib tawm.Kuv yuav tsum tau khiav tag nrho cov yeeb nkab dub.

Yog tias koj mus nug rau lub sijhawm 40 (lossis 80) dub steel yeeb nkab, koj yuav tau txais cov yeeb nkab steel, yooj yim threaded thiab welded.Galvanized lub sij hawm 40 (los yog 80) yeeb nkab yog tib yam khoom, tab sis galvanized, ntawm chav kawm, yog li koj yuav tsis xav welding nws.Kuv paub tias koj siv tau packing tshuab rau natural gas kab, tab sis nyob rau hauv lub tsev Depot lawv hais rau kuv kuv ua tau. Tsis siv cov yeeb nkab galvanized rau roj.Kuv ib txwm xav tias cov txheej dub yog cov roj carbonized (raws li ntawm cov hlau dub kib) tab sis kuv tau nyeem tsis ntev los no tias nws tsuas yog lacquer.

Thaj, qhov teeb meem nrog cov cuab yeej hluav taws xob galvanized rau cov kav dej yog qhov hais los yog flakes ntawm zinc tuaj yeem nkag mus rau hauv lub valve orifices, thiab lwm yam. Kuv xav tias cov khoom me me ntawm xeb lossis lacquer yuav ua ib yam, tab sis tsis pom tseeb.