ASTM A249 / A249M Txuj
ASTM A249 TxujSpecification rau Welded Austenitic Steel Boiler, Superheater, Kub-Exchanger, thiab Condenser Tubes. ASTM A249 steel tuaj yeem siv rau hauv qhov chaw hnyav thiab muaj kev tiv thaiv zoo rau qhov kub thiab txias yam tsis muaj kev cuam tshuam. Nws tuaj yeem txuas nrog lwm cov hlau xws li npib tsib xee lossis titanium thiab. Nws yog lub zog muaj zog, tsis tshua muaj hlau alloy uas tau siv rau ntau yam kev siv, xws li hauv kev lag luam chemical, roj av, thiab zaub mov.
ASTM A249 Stainless Hlau Tube Daim Ntawv Thov
ASTM A249 Stainless Hlau Tubesyog ib qho kev xaiv nrov rau hydrocarbon thiab lwm yam tshuaj nroj tsuag, tsim hluav taws xob thiab cogeneration nroj tsuag, dej, thiab dej khib nyiab rov qab tshuab, inorganic synthesis nroj tsuag, refinery units, thiab ntau yam ntawm lwm yam kev siv.
Astm A249 Tubing Khoom thiab Qib
ASTM A249 Specifications qhia tias cov khoom siv ntawm cov raj siv hauv cov tsev neeg stainless hlau yog Austenitic Stainless Steel qib, uas yog siv dav hauv ntau daim ntawv thov.ASTM A249 TP304, TP304L, TP316, thiab TP316L qibyog tag nrho cov ntaub ntawv zoo tagnrho rau ntau daim ntawv thov vim lawv muaj ntau yam zoo uas lwm cov hlau tsis muaj.
ASTM A249 TP304 stainless hlau rajyog ib qho tseem ceeb ntawm txhua qhov system siab thiab xav tau rau TIG vuam.ASTM A249 TP304L stainless hlau welded rajyog tsim los ua kom tau raws li qhov tshwj xeeb ntawm ASTM tus qauv, 304L qib stainless hlau, thiab ci ntsa iab annealing tiav. Cov raj feem ntau yog siv rau cov khoom siv cua sov, condensers, thiab lwm yam cua sov.
Yog tias koj xav kom ntev lub neej ntawm stainless-steel hlab nyob rau hauv ib puag ncig hnyav,ASTM A249 TP316/316L welded tubingyog ib qho kev xaiv zoo tshaj plaws rau kev sib hloov cua sov, superheaters, thiab boilers vim nws cov corrosion kuj siab thiab muaj peev xwm tiv thaiv sab hauv thiab sab nraud corrosion.
ASTM A249 Welded Tube Qhov ntau thiab tsawg, qhov ntev thiab kam rau ua
ASME SA 249 yeeb nkabqhov loj thiab phab ntsa thickness yog: 1/8 nti (3.2 hli) puab txoj kab uas hla mus rau 12 nti (304.8 mm) sab nraud txoj kab uas hla, 0 015 nti rau 0.32 nti (0.4 - 8.1 hli). Cov yeeb nkab qhov ntev yog qhia hauv inches los yog millimeters, thiab qee zaum specifications (BWG) tau teev.
Qhov ntau thiab tsawg ntawm A249 / A269 Tubing
| O.D. | MM | Phab ntsa tuab | MM | LENGTHS | Qib | Hom | SPECIFICATIONS |
|---|---|---|---|---|---|---|---|
| 1/2" | 12.70 | 0.065" | 1.65 | 10′ – 20′ | 304/304L/316L | Welded | A249 / A269 / A270 |
| 3/4" | 19.05 | 0.065" | 1.65 | 10′ – 20′ | 304/304L/316L | Welded | A249 / A269 / A270 |
| 1" | 25.4 | 0.049" | 1.24 | 10′ – 20′ | 304/304L/316L | Welded | A249 / A269 / A270 |
| 1" | 25.4 | 0.065" | 1.65 | 10′ – 20′ | 304/304L/316L | Welded | A249 / A269 / A270 |
| 11/2" | 38.10 | 0.049" | 1.24 | 10′ – 20′ | 304/304L/316L | Welded | A249 / A269 / A270 |
| 11/2" | 38.10 | 0.065" | 1.65 | 10′ – 20′ | 304/304L/316L | Welded | A249 / A269 / A270 |
| 2" | 50.80 | 0.049" | 1.24 | 10′ – 20′ | 304/304L/316L | Welded | A249 / A269 / A270 |
| 2" | 50.80 | 0.065" | 1.65 | 10′ – 20′ | 304/304L/316L | Welded | A249 / A269 / A270 |
| 21/2" | 63.50 | 0.065" | 1.65 | 10′ – 20′ | 304/304L/316L | Welded | A249 / A269 / A270 |
| 3" | 76.20 | 0.065" | 1.65 | 10′ – 20′ | 304/304L/316L | Welded | A249 / A269 / A270 |
| 4" | 101.60 | 0.065" | 1.65 | 10′ – 20′ | 304/304L/316L | Welded | A249 / A269 / A270 |
| 4" | 101.60 | 0.083" | 2.11 | 10′ – 20′ | 304/304L/316L | Welded | A249 / A269 / A270 |
| 6" | 152.40 | 0.083" | 2.11 | 10′ – 20′ | 304/304L/316L | Welded | A249 / A269 / A270 |
| 6" | 152.40 | 0.109" | 2.77 | 10′ – 20′ | 304/304L/316L | Welded | A249 / A269 / A270 |
| 8" | 203.20 | 0.109" | 2.77 | 10′ – 20′ | 304/304L/316L | Welded | A249 / A269 / A270 |
| 10" | 254.00 | 0.134" | 3.40 | 10′ – 20′ | 304/304L/316L | Welded | A249 / A269 / A270 |
| 12" | 304.80 | 0.134" | 3.40 | 10′ – 20′ | 304/304L/316L | Welded | A249 / A269 / A270 |
Loj Tolerances
ASTM A249 welded rajdimensional kam rau ua raws li ASTM A1016 specification, phab ntsa thickness kam rau ua yog +/-10% ntawm thickness, piv nrog ASTM A269 tube loj kam rau ua raws li nram no.
| OD | WTH | L | ||
|---|---|---|---|---|
| ASTM A 249 Cov khoom siv | 25.40 hli | ± 0.10mm | ±10.00% | OD＜50.8mm +3.0mm -0mm OD Ntau dua lossis sib npaug li 50.8mm +5 0 -0mm |
| Ntau dua lossis sib npaug li 25.4mm ~ 38.1mm | ± 0.15 hli | |||
| Ntau dua lossis sib npaug li 38.1mm ~ 50.8mm | ± 0.20mm | |||
| Ntau dua lossis sib npaug li 50.8mm ~ 63.5mm | ± 0.25 hli | |||
| Ntau dua lossis sib npaug li 63.5mm ~ 76.2mm | ± 0.30mm | |||
| Ntau dua lossis sib npaug li 76.2mm ~ 101.6mm | ± 0.38mm | |||
| Ntau dua lossis sib npaug li 101.6mm ~ 190.5mm | +0.38mm -0.64mm | |||
| Ntau dua lossis sib npaug li 190.5mm ~ 228.6mm | +0.38mm -1.14mm | |||
| ASTM A 269 Cov khoom siv | 38.1 hli | ± 0.13 hli | OD 12.7 hli ± 15% OD Ntau dua lossis sib npaug ntawm 12.7mm ± 10% |
OD＜38.1mm +3.20mm -0mm OD Ntau dua lossis sib npaug rau 38.1mm +4 80 -0mm |
| Ntau dua lossis sib npaug li 38.1mm ~ 88.9mm | ± 0.25 hli | |||
| Ntau dua lossis sib npaug li 88.9mm ~ 139.7mm | ± 0.38mm | |||
| Ntau dua lossis sib npaug li 139.7mm ~ 203.7mm | ± 0.76 hli | |||
| Ntau dua lossis sib npaug li 203.7mm ~ 304.8mm | ± 1.01 hli | |||
| Ntau dua lossis sib npaug li 304.8mm ~ 355.6mm | ± 1.26 hli | |||
Mechanical Properties
ASTM A249: flattening, flange thiab thim rov qab khoov, tensile kuaj thiab hardness.
Qhov txawv ntawm ASTM A269 thiab A249 yog dab tsi?
ASTM A249 yuav tsum muaj kev ntsuam xyuas dav dav rau kev siv nyob rau hauv ib puag ncig tseem ceeb hauv boilers lossis kub exchangers. ASTM A269 yuav tsum tau rov qab flattening, ntxiv rau flange thiab hardness tests. Nws tsis xav tau kev sim tensile. ASTM A270 tsuas yog xav tau qhov rov qab flattening test xwb.
ASTM A249 VS ASTM A269 Qhov txawv yog dab tsi?
| Parameter | ASTM A 249 Cov khoom siv | ASTM 269 (Tshooj 269 |
|---|---|---|
| Tube Manufacturing | Welded | Welded Thiab Seamless |
| Daim ntawv thov | Boiler Superheater Thaum tshav kub kub Exchanger Condenser |
Kev Pabcuam General |
| Qhov ntau thiab tsawg | OD: Max 304.8 hli Thickness: 0.4 - 8.1 hli |
ID: Min. 3.4mm ib Thickness: 0.51 hli |
| ASTM / ASME Cov | ASTM A 249 Cov khoom siv ASME SA249 |
ASTM A 269 Cov khoom siv |
| Kuaj | Flange Test | Flaring Test |
