Qhov txawv ntawm A249 thiab A213 yog dab tsi?
Dec 16, 2025
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Qhov txawv ntawm A249 thiab A213 yog dab tsi?
Qhov txawv ntawm A249 thiab A213 yog dab tsi?
Qhov sib txawv tseem ceeb yog nyob rau hauv kev tsim thiab kev siv: ASTM A213 qhia seamless ferritic / austenitic alloy tubes rau boilers / tshav kub exchangers, thaum ASTM A249 npog welded, txias- ua hauj lwm austenitic raj rau zoo xws li cov ntaub ntawv hloov tshav kub (boilers, superheaters, condensers). A213 raj yog seamless thiab muaj zog dua; thaum A249 cov hlab yog welded los ntawm steel strips, ua rau lawv haum rau cov cua sov sib hloov tshuab xav tau zoo siab / kub tsis kam.
Dab tsi yog qhov tshwj xeeb ntawm ASTM A213 T11?
Seamless alloy tubing conforming rau ASTM A213 T11 feem ntau muaj ib txoj kab uas hla ntawm 1/8 nti [3.2 mm] mus rau 5 nti [127 mm] thiab phab ntsa thickness ntawm 0.015 ntiv mus rau 0.500 nti (nrog rau ntawm 0.4 hli mus rau 12.7 hli), nrog ib tug yam tsawg kawg nkaus phab ntsa thickness ntawm 0.4 hli rau 0.4 hli. 0.500 hli), los yog, yog hais tias txwv tsis pub nyob rau hauv qhov kev txiav txim, ib tug nruab nrab phab ntsa thickness.
ASTM A213 / A213M yog ib qho kev qhia dav dav tshaj tawm los ntawm American Society for Testing and Materials (ASTM) rau seamless ferritic thiab austenitic alloy steel tubing siv boilers, superheaters, thiab tshav kub exchangers. Nws qhia txog cov tshuaj lom neeg muaj pes tsawg leeg, cov khoom siv hluav taws xob, kev kho cua sov, qhov ntev ntev, thiab tsis yog -kev ntsuas kev puas tsuaj rau seamless steel hlau (xws li TP304H thiab TP316L) thiab hlau alloy (xws li T11 thiab T22) tubing haum rau siab - kub thiab siab {{9.}} ib puag ncig Nws yog tus qauv tseem ceeb rau kev xaiv, kev yuav khoom, thiab lees txais qhov tseem ceeb ntawm - qhov kub thiab txias - cov kabmob tubing hauv kev lag luam xws li kev tsim hluav taws xob, petrochemicals, thiab boiler manufacturing, ua kom muaj kev nyab xeeb thiab kev ntseeg siab ntawm cov ntaub ntawv nyob rau hauv cov kev pabcuam hnyav.
ASTM A249 / A249M yog ib qho kev qhia dav dav tshaj tawm los ntawm ASTM rau welded austenitic stainless hlau tubing siv hauv boilers, superheaters, tshav kub exchangers, thiab condensers. Nws qhia txog cov tshuaj lom neeg muaj pes tsawg leeg, cov khoom siv kho tshuab, vuam zoo, kev kho cua sov, qhov ntev ntev, thiab tsis yog -kev kuaj kev puas tsuaj rau austenitic stainless hlau (xws li 304, 316, thiab 321) welded kav (feem ntau longitudinal seam welds). Nws yog haum rau nruab nrab - thiab siab -kub corrosive media ib puag ncig thiab yog tus qauv tseem ceeb rau kev xaiv thiab kev lees paub ntawm lub siab tseem ceeb- bearing welded kav hauv kev lag luam xws li petrochemicals, khoom noj khoom haus thiab tshuaj, lub zog, thiab tub yees, ua kom lawv muaj kev nyab xeeb thiab kev ntseeg tau raws li kev ua haujlwm tshwj xeeb.
ASTM A249 thiab ASTM A213 tus qauv
| Txuj | Kev kam rau sab nraud (mm) |
Phab ntsa thickness (%) | Length kam rau ua (mm) | ||
| ASTM A 249 Cov khoom siv | <25.0 | +0.10 -0.11 | ±10% | ||
| Ntau dua lossis sib npaug rau 25.0- Tsawg dua lossis sib npaug rau 40.0 | ±0.15 | ||||
| >40.0-<50.0 | ±0.20 | OD<50.8 | +3.0-0.0 | ||
| Ntau dua lossis sib npaug rau 50.0 ~<65.0 | ±0.25 | ||||
| Ntau dua lossis sib npaug rau 65.0-<75.0 | ±0.30 | ||||
| Ntau dua lossis sib npaug rau 75.0 ~<100.0 | ±0.38 | OD Ntau dua lossis sib npaug rau 50.8 | +5.0-0.0 | ||
| Ntau dua lossis sib npaug rau 100 ~ Tsawg dua lossis sib npaug rau 200.0 | +0.38 -0.64 | ||||
| >200.0- Tsawg dua lossis sib npaug rau 225.0 | +0.38 -1.14 | ||||
| ASTM 213 UAS | D＜25.4 | ± 0.10 | +20/0 | +3.0/0 | |
| 25.4~38.1 | ±0.15 | ||||
| 38.1~50.8 | ±0.20 | ||||
| 50.8~63.5 | ±0.25 | +22/0 | +5.0/0 | ||
| 63.5~76.2 | ±0.30 | ||||
| 76.2~101.6 | ±0.38 | ||||
| 101.6~190.5 | +0.38/-0.64 | ||||
| 190.5~228.6 | +0.38/-1.14 | ||||
ASTM A249 (welded yeeb nkab)
Hom: Welded austenitic stainless hlau raj.
Cov txheej txheem tsim khoom: Rolled steel sawb, welded, tom qab ntawd txias- ua haujlwm thiab cua sov- kho; cov kev cai tshwj xeeb siv rau kev vuam.
Daim ntaub ntawv: Boilers, superheaters, heat exchangers, condensers, thiab siab tshuab qhov twg tshav kub hloov yog qhov tseem ceeb.
ASTM A213 (tsis muaj seamless)
Hom: Seamless ferritic thiab austenitic alloy steel raj.
Cov txheej txheem tsim khoom: Ua los ntawm kub- dov steel billets, ua kom muaj kev sib tw-dawb nto thiab muab lub zog zoo rau kev siv siab -.
Daim ntaub ntawv: Boiler, superheater, thiab cua kub exchanger raj, feem ntau yog siv nyob rau hauv siab - kub, siab - ib puag ncig siab, nrog rau qhov tsawg kawg nkaus phab ntsa thicknesses.
Qhov tseem ceeb sib txawv tau sau tseg:
A249=welded yeeb nkab; A 213=seamless yeeb nkab.
A249 yuav tsum tau vuam (kev ua haujlwm txias / vuam tswj); A213 yog inherently ib seamless yeeb nkab.
Ob leeg tsim nyog rau siab - kub thiab siab - qhov chaw siab, tab sis cov txheej txheem tsim khoom sib txawv yog siv rau cov kav hlau tsis muaj steel / alloy.
Vim li cas thiaj xaiv Gnee ua koj cov khoom siv stainless hlau?
✅ Tshaj 18 xyoo ntawm kev xa tawm, nrog cov khoom muag rau ntau tshaj 80 lub teb chaws
✅ ISO, SGS, thiab BV tau ntawv pov thawj
✅ Muaj thoob ntiaj teb Tshuag ntawm 304, 316, 316L, thiab 321 alloy kav, phaj, thiab tuav
✅ Customized processing services available, xws li txiav, polishing, CNC machining, thiab ntim
✅ Kev xa khoom sai hauv 7-15 hnub, txhawb nqa los ntawm cov neeg koom tes thoob ntiaj teb
📦 Ntim thiab Shipping
Tag nrho cov khoom siv stainless hlau tau ntim raws li hauv qab no:
Ntoo pallets lossis ntoo crates
Moisture -cov ntaub ntawv pov thawj
Sau npe nrog tus lej xov tooj cua sov, tus qauv, thiab qhov ntev
Shipped thoob ntiaj teb los ntawm hiav txwv, huab cua, los yog xa tawm
Xa kev nug