Txheej txheem cej luam ntawm Cov Yeeb Nkab Hlau Ductile
Cov kav hlau zas yog cov kav dej ua los ntawm cov hlau zas. Cov hlau zas yog cov hlau graphite spheroidized. Qhov kev ntseeg siab ntawm cov hlau zas yog vim nws lub zog siab, kev ruaj khov, thiab kev cuam tshuam thiab kev xeb. Cov kav hlau zas feem ntau yog siv rau kev faib dej haus thiab kev nqus cov slurries, dej phwj thiab cov tshuaj ua haujlwm. Cov kav hlau no yog kev txhim kho ncaj qha ntawm cov kav hlau zas ua ntej uas tam sim no nws yuav luag hloov. Qhov kev ntseeg siab ntawm cov kav hlau zas yog vim nws ntau yam khoom zoo dua. Cov kav dej no yog cov kav dej nrhiav ntau tshaj plaws rau ntau daim ntawv thov.
Cov Lus Qhia Txog Cov Kav Hlau Ductile
| Lub Npe Khoom | Hlau ductile uas nws tus kheej anchored, Hlau Ductile Yeeb Nkab nrog Spigot & Qhov (Socket), Hlau Grey Yeeb Nkab |
| Cov Lus Qhia Tshwj Xeeb | ASTM A377 Hlau Ductile, AASHTO M64 Cov Kav Dej Hlau Cam Khwb Cia |
| Tus Qauv | ISO 2531, EN 545, EN598, GB13295, ASTM C151 |
| Qib Kawm | C20, C25, C30, C40, C64, C50, C100 & Chav Kawm K7, K9 & K12 |
| Ntev | 1-12 Meters lossis raws li qhov yuav tsum tau ua ntawm cov neeg siv khoom |
| Qhov Loj | DN 80 hli mus rau DN 2000 hli |
| Txoj Kev Sib Koom Tes | Hom T; Hom sib koom ua ke k; Tus kheej-anchor |
| Txheej Sab Nraud | Xim liab / xiav Epoxy lossis Dub Bitumen, Zn & Zn-AI Coatings, Metallic Zinc (130 gm/m2 lossis 200 gm/m2 lossis 400 gm/m2 raws li cov neeg siv khoom xav tau) ua raws li cov qauv ISO, IS, BS EN nrog txheej tiav ntawm Epoxy Coating / Black Bitumen (qhov tsawg kawg nkaus tuab 70 micron) raws li cov neeg siv khoom xav tau. |
| Txheej Sab Hauv | Cov ntaub pua plag cement ntawm OPC/SRC/BFSC/HAC raws li qhov xav tau nrog cov ntaub pua plag Portland Cement thiab Sulfate Resisting Cement uas ua raws li cov qauv IS, ISO, BS EN. |
| Txheej | Tshuaj tsuag zinc hlau nrog Bituminous Txheej (Sab Nraud) Cement mortar lining (Sab Hauv). |
| Daim Ntawv Thov | Cov yeeb nkab hlau cam khwb cia feem ntau yog siv rau kev xa cov dej khib nyiab, dej haus thiab rau kev ywg dej. |
Peb Qib Tseem Ceeb ntawm Cov Yeeb Nkab Hlau Casted
V-2 (chav kawm 40) Grey Iron, V-3 (65-45-12) Ductile Iron, thiab V-4 (80-55-06) Ductile Iron. Lawv muaj lub zog nias zoo heev thiab muaj peev xwm txo kev co siab.
V-2 (chav kawm 40) Grey Hlau, ASTM B48:
Qib no muaj lub zog tensile siab ntawm 40,000 PSI nrog lub zog compression ntawm 150,000 PSI. Nws qhov hardness yog txij li 187 - 269 BHN. V-2 yog qhov zoo tshaj plaws rau cov ntawv thov hnav ncaj thiab muaj lub zog siab tshaj plaws, qhov nyuaj, tiv taus kev hnav thiab kev kho cua sov rau cov hlau grey unalloyed. Nws yog dav siv rau cov kabmob thiab bushing daim ntawv thov hauv kev lag luam hydraulics.
V-3 (65-45-12) Hlau Ductile, ASTM A536:
Qib no muaj lub zog tensile ntawm 65,000 PSI, lub zog tawm ntawm 45,000 PSI, nrog 12% elongation. Qhov nyuaj yog txij li 131-220 BHN. Nws cov qauv ferritic zoo ua rau V-3 yooj yim tshaj plaws ntawm peb qib hlau ua rau nws yog ib qho ntawm cov qib siab tshaj plaws ntawm lwm cov ntaub ntawv ferrous; tshwj xeeb ua ke nrog kev cuam tshuam zoo tshaj plaws, qaug zog, hluav taws xob conductivity thiab magnetic permeability. Hlau Ductile, tshwj xeeb tshaj yog cov kav dej, feem ntau yog siv rau cov dej thiab cov kav dej phwj. Cov hlau no kuj pom muaj nyob rau hauv cov khoom siv tsheb thiab cov ntawv thov kev lag luam.
V-4 (80-55-06) Hlau Ductile, ASTM A536:
Qib no muaj lub zog tensile ntawm 80,000 PSI, lub zog tawm ntawm 55,000 PSI thiab elongation ntawm 6%. Nws yog lub zog siab tshaj plaws ntawm peb qib, raws li cam khwb cia. Qib no tuaj yeem kho cua sov rau 100,000 PSI tensile lub zog. Nws muaj qhov ntsuas qis dua 10-15% dua li V-3 vim nws cov qauv pearlitic. Nws feem ntau xaiv thaum xav tau cov hlau physicals.
Cov kav dej DI zoo dua li cov kav dej hlau / PVC / HDPE
• Cov kav dej DI kuj tseem txuag tau cov nqi khiav lag luam ntau txoj kev suav nrog cov nqi twj tso kua dej, cov nqi tapping, thiab kev puas tsuaj los ntawm lwm yam kev tsim kho, ua rau tsis ua haujlwm thiab tus nqi kho feem ntau.
• Tus nqi siv tau ntev ntawm DI Pipes yog ib qho txiaj ntsig zoo tshaj plaws. Vim tias nws kav ntev mus ntau tiam neeg, pheej yig rau kev khiav lag luam, thiab yooj yim thiab ua haujlwm tau zoo, nws tus nqi siv mus sij hawm ntev lossis siv mus sij hawm ntev yog qis dua lwm yam khoom siv.
• Cov yeeb nkab hlau uas khoov tau zoo nws tus kheej yog cov khoom siv rov ua dua tshiab tau 100%.
• Nws muaj zog txaus los tiv taus cov xwm txheej hnyav tshaj plaws, los ntawm kev siv siab, mus rau cov av hnyav thiab cov tsheb thauj khoom, mus rau cov av tsis ruaj khov.
• Kev teeb tsa yooj yim thiab muaj kev nyab xeeb rau cov neeg ua haujlwm uas tuaj yeem txiav thiab coj mus rhaub Cov Yeeb Nkab Hlau Ductile ntawm qhov chaw.
• Cov yeeb nkab hlau uas ua los ntawm hlau txhais tau tias cov yeeb nkab no yooj yim nrhiav tau hauv av nrog cov cuab yeej nrhiav yeeb nkab ib txwm muaj.
•Cov kav dej DI muaj lub zog tensile siab dua li cov hlau tsis muaj zog thiab khaws cov tshuaj tiv thaiv corrosion ntawm cov hlau cam khwb cia.
