Khoom Description
Khoom Specifications
| Cov qauv | ASTM A 269 Cov khoom siv |
| Qib Steel | SS 304 / UNS S30400 |
| Cov qauv sib npaug | EN 1.4301 / JIS SUS304 |
| Sab nraud Diameter (OD) | 6mm-89 hli |
| Phab ntsa Thickness (WT) | 0.5mm-3.0 hli |
| Ntev | 6/12 m, los yog kev cai |
| Kev kho saum npoo | Bright Annealed |
| Txheej txheem ntau lawm | Hluav taws xob Resistance Welded (ERW) |
| Qhov xwm txheej | Bright Annealed |
HVAC cov tshuab nquag tswj cov dej noo, condensing, thiab me me corrosive media, xws li cov pa roj carbon dioxide yaj, tshuaj ntxuav, thiab cov khoom zoo sib xws. Muaj 18-20% chromium thiab 8-10.5% npib tsib xee, Qib 304 stainless hlau tsim ib txheej ruaj khov, passive oxide txheej uas tiv thaiv corrosion los ntawm condensation; tsis zoo li cov pa roj carbon steel, nws yuav tsum tsis muaj cov tshuaj tiv thaiv ntxiv -corrosion txheej.
SS 304 ERW yeeb nkab tau dhau los ua cov txheej txheem ci ntsa iab, ua tiav qhov roughness ntawm Ra tsawg dua lossis sib npaug li 0.8 μm. Tsis pub dawb los ntawm oxidation thiab impurities, lawv cov phab ntsa du hauv cov phab ntsa txo qis cov plua plav thiab nplai, yog li txo cov dej tsis kam hauv cov kav dej.
Piv rau 316L stainless hlau, Qib 304 muaj tus nqi kom zoo dua ntawm 15-20%, thaum nws cov peev xwm ua tau zoo nyob twj ywm txaus kom ua tau raws li qhov tseem ceeb ntawm HVAC daim ntawv thov. Tsis tas li ntawd, Qib 304 tau yooj yim koom nrog siv txoj hauv kev xws li xovxwm- haum lossis vuam, uas yuav pab txo qis tus nqi tag nrho ntawm lub kaw lus.
Customized Services
- TORICH muaj qhov ntev ntev ntawm 3m, 6m, 9m, thiab 12m, nrog kev cai txiav muaj raws li cov neeg siv khoom thov.
- Peb muab kev pabcuam CNC dabtsi yog khoov, suav nrog U-khoov, serpentine coils, thiab multi-radius dabtsi yog khoov.
- Ntxiv rau qhov ci ntsa iab tiav, peb muab ntau yam kev kho mob saum npoo xws li pickling thiab passivation, mechanical polishing (180 #, 240 #, 320 #, 400 #, mus txog 600 # grit), thiab electropolishing (EP).
- Peb muab laser txiav, dabtsi yog khoov, flaring, thiab weld npaj cov kev pab cuam los tsim tshwj xeeb HVAC fittings -xws li luj tshib, tees, thiab reducers - uas yog npaj rau kev ncaj qha system installation.
- Rau siab - siab HVAC piping, peb tau ua kom zoo dua peb cov txheej txheem ERW vuam los txhim kho ob qho tib si vuam lub zog thiab xau- nruj.
Tshuaj muaj pes tsawg leeg
| Element | C (max) | Mn (max) | Si (max) | P (max) | S (max) | Cr (%) | Tsis muaj (%) | Mo (%) |
| TIAB SA 304 | 0.08 | 2.00 | 1.00 | 0.045 | 0.030 | 18.0–20.0 | 8.0–10.5 | - |
| TIAB SA 316 | 0.08 | 2.00 | 1.00 | 0.045 | 0.030 | 16.0–18.0 | 10.0–14.0 | 2.0–3.0 |
| TXM 15 | 0.08 | 2.00 | 1.00 | 0.045 | 0.030 | 15.0–17.0 | 4.0–6.0 | 0.3–0.6 |
Mechanical Properties
| Khoom | Tensile zog (MPa) | Yield zog (MPa) | Elongation (%) | Hardness (HB) |
| TIAB SA 304 | 505–735 | Ntau tshaj lossis sib npaug rau 215 | Ntau dua lossis sib npaug li 40 | Tsawg dua lossis sib npaug li 88 |
| TIAB SA 316 | 515–760 | Ntau dua lossis sib npaug li 205 | Ntau dua lossis sib npaug li 40 | Tsawg dua los yog sib npaug li 95 |
| TXM 15 | 480–700 | Ntau dua lossis sib npaug li 200 | Ntau dua lossis sib npaug li 35 | Tsawg dua los yog sib npaug li 90 |
Cov qhab nia xaiv tau
- Nyob rau hauv ntug dej hiav txwv los yog siab -chloride ib puag ncig, 316L stainless hlau raug pom zoo; nws muaj kev tiv thaiv rau pitting thiab crevice corrosion, ua rau nws haum rau marine HVAC systems los yog dej kho nrog tshuaj.
- Rau cov haujlwm uas muaj kev vuam dav, 304L- qis- carbon variant ntawm SS 304- yog qhov kev xaiv tsim nyog. Nws txo qhov kev pheej hmoo ntawm intergranular corrosion thiab yog qhov zoo rau cov txheej txheem tsim khoom.
- Rau sab hauv HVAC systems, 201 stainless hlau yog tus nqi -kev xaiv zoo; Txawm li cas los xij, nws muaj kev txo qis corrosion thiab lub neej ua haujlwm luv dua.
thaj chaw thov
ASTM A269 SS 304 ERW yeeb nkab yog dav siv hauv HVAC systems. Cov hauv qab no yog cov haujlwm tseem ceeb hauv cov xwm txheej ua tau zoo:
- Thaum tshav kub kub exchangers nyob rau hauv chillers, ru tsev units, thiab industrial txias tshuab
- Cov cua txias / cua sov coils thiab cov kav dej sab hauv hauv cov cua txias
- Chilled dej thiab cua txias kab rau nruab nrab cua txias thiab tub yees tshuab
- Ntxuav cov pa ducts thiab cov kav dej xa mus rau qhov cua thiab cua faib tshuab
- Cov qauv thiab kev ua haujlwm tubing nyob hauv cov cuab yeej HVAC
Khoom Qhia
Cov khoom siv kuaj
Khoom siv Hoobkas
Cov khoom siv Pickling
Cov khoom ntim
FAQ
Q: Dab tsi yog qhov txawv ntawm Bright Annealed (BA) thiab Annealed & Pickled (AP) nto tiav?
A: BA nto yog annealed nyob rau hauv ib tug tiv thaiv huab cua, uas ua rau ib tug kaj, silvery tiav tsis muaj oxide nplai, nrog ib tug deg roughness ntawm Ra tsawg dua los yog sib npaug zos rau 0.4 μm. AP qhov chaw, sib txawv, yog annealed nyob rau hauv qhib huab cua thiab tom qab pickled kom tshem tawm oxide nplai; lawv feature ib tug matte tiav nrog ib tug nto roughness ntawm Ra Ntau tshaj los yog sib npaug rau 3.2 μm. BA tubing muaj kev huv zoo dua thiab yog li ntawd zoo - haum rau kev thov HVAC tshuab.
Q: Puas yog qhov vuam zoo ntawm ERW (Electric Resistance Welded) tubing txhim khu kev qha?
A: Yog, nws ntseeg tau. ERW vuam yog ua yam tsis muaj qhov sib ntxiv ntawm cov hlau muab tub lim; Yog li ntawd, lub weld seam undergoes recrystallization thiab phim cov tshuaj muaj pes tsawg leeg ntawm cov khoom hauv paus. Tom qab ci ntsa iab annealing, residual welding stresses raug tshem tawm, ua rau lub zog weld uas yog tsawg kawg yog 90% ntawm cov khoom siv lub zog, nrog rau tag nrho cov kev ua tau zoo ze ze ntawm seamless tubing.
Q: Dab tsi yog qhov kev txwv ntawm kev tiv thaiv corrosion ntawm 304 stainless hlau hauv HVAC systems?
A: Thaum 304 stainless hlau pom zoo corrosion kuj tiv thaiv condensate, antifreeze kua, thiab ib puag ncig hauv nroog, ntev raug rau siab -chloride ib puag ncig-xws li thaj tsam ntug dej hiav txwv, cua txias yees, lossis thaj chaw nyob ib puag ncig cov pas dej da dej - tuaj yeem ua rau pitting corrosion. Hauv cov xwm txheej zoo li no, nws raug pom zoo kom hloov mus rau 316L stainless hlau.
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