{{01. Vim li cas txiv ntoo piping haum rau cov kav dej uas muaj cov kav dej nyob?
Teb:
Aluminium kav yog nce kev tawm tsam hauv tsev vim yog:
Corrosion Kuj: Ib txwm sau cov txheej oxide, tiv thaiv xeb hauv acidic / alkaline dej (ph 5-.
Lub teeb yuag: 60% sib dua dua li tooj liab, easting DIY installation (e ., PEX COMPOSITE PIPES) .
Tus Nqi Muaj Zog: 30-40% pheej yig dua tooj liab nrog kev sib piv lifabpan (50+ xyoo) {3} {3}
Tus yam ntxwv: Lub teb chaws Yelemees tus din 1988 cov qauv pom zoo pom zoo txhuas kav rau cov khoom xa tawm kom muaj dej faib rau.
{{0 {}} Yuav ua li cas txhuas ua PVC rau hauv cov ntawv tso kua?
Teb:
Txhuas Outperforms PVC Hauv:
Kev Ua Si Kub Kub: Txhais 150 Qib VS .} pvc tus 60℃txwv (zoo tagnrho rau cov kab khib nyiab kub).
Lub Zog Txheej Txheem: Withstands 2x Ntau Tshaj Yuam Kev Loj (ASTM D256 Cov Qauv).
Muaj zog: Tag nrho rov ua dua vs . pvc cov canorine-raws li ntau lawm .
Chaw sib pauv-tawm: Txhuas yuav tsum rwb thaiv tsev kom tiv thaiv cov hws hauv huab cua txias .
3. Yuav siv li cas rau cov dej khov khov kho?
Teb:
Lijalions alloys suav nrog:
6082-T6: Tawm lub zog ntawm 260 MPa rau cov kab xa khoom loj (en 755-2 ua raws).
3003-H14: Zoo Heldability rau kev cai sib koom ua ke cov kev cai .
Aluminium-Lithium alloys: 7% txo qis rau cov dej txawb (e . g}, rvs {{3} {3}
Tsab ntawv: Alloy 6061 raug zam vim yog tooj liab cov peev xwm pheej hmoo txaus ntshai galvanic corrosion {}}
4. Yuav ua li cas los tiv thaiv galvanaic corrosion hauv cov hnab looj tes txhuas hauv cov hnab looj tes ua rau?
Teb:
Cov tswv yim kev tso cai:
Dielectric unions: Cais tawm txhuas los ntawm kev sib cais me me (e {.}}, tooj dag fittings).
Txheej: Thov zinc-reimers ntawm kev sib txuas cov ntsiab lus .
Kev Kho Mob Dej: Tuav pH 7-8.5 thiab cov ntsiab lus chloride tsawg (<50 ppm).
Sau xov tooj: IPC 2027 Meem defitic sib cais rau cov tshuab hlau sib xyaw-hlau tshuab.
5. Cov kev teeb tsa zoo tshaj plaws rau txhuas cov kav dej?
Teb:
Cov Txheej Txheem Tseem Ceeb:
Cov pob qij txha nthuav dav: Tso cai 3 hli sib txawv ib meter rau thermal expansion ({{1} {.
Lub tuam txhab: Siv carbide hniav kom tsis txhob muaj crush thaum txiav .
Siab Ntsuas: Hydrostatic xeem ntawm 1 {. 5x ua haujlwm siab (rau ASME B31.9).
