ASTM A789 S31803is the standard specification for seamless and welded ferritic/austenitic stainless steel tubing for general use.S31803Nws yog lub duplex stainless hlau, lub ntsiab lus nws muaj ob ntu ob ntu microstructure muaj ntawm Austenite thiab ntau dua. ASTM A789 npog cov yeeb nkab nrog sab nraud txoj kab uas hla ntawm 1/8 nti mus rau 5 nti thiab phab ntsa tuab ntau ntawm 0.500 nti.
GneeCov khoom siv ASTM A789 undletx leeg, ib tug qauv duplex stainless hlau tsim los ntawm kub xuas nrig ntaus lossis kub extrusion, kos duab txias thiab daws anealing kev kho mob. Cov hlab no muaj nyob nrog sab nraud diameters ntawm12.7-114.3 mm (1/2 "- 4 1} / 2")(nrog loj dua kev cai loj xaiv) thiab phab ntsa thicknesses ntawm0.89-3.0mmCov. Lawv yog qhov tsim nyog rau hauv cov dej ib puag ncigHeev corrosive, kub thiab kub siab, muaj chlorides lossis sulfides hauv boiler system, xws li: boiler pub cov leeg, chav me me rov qab cov kab txuas rov qab thiab cov pa roj txuas.
Gnee nruj me ntsis raws liCov Qauv Thoob Ntiaj Teb, suav nrog Astm A789 / ASME SA789 thiab EN 10216-5, muab thawj cov ntaub ntawv tshawb fawb thiab kev sim peb tog thib peb thiab kev kuaj mob hauv qab) kom paub meej tias aruaj khov thiab txhim khu kev qha zoontawm cov khoom.
ASTM A789 UNSONEFALL Stainless Hlau Duplex Yeeb Tshwj Xeeb Rau Boilers
| Khoom | Boiler Tube |
|---|---|
| Txoj cai | ASTM A789 / ASME SA789 |
| Khoom | Duplex Steel |
| Tom ntsis | Du / beveled xaus |
| Lub cev | Ncaj & u nkhaus |
| Txiv leej leej txiv | Seamless & welded |
| Ntim | Plywood Box, Nqaj |
| Fai fab tshwj tseg | ASME SA789 DUPLEX STEEL YEES, ASTM A789 S31803 DUPLEX STEEL YEES, DUPLEX YEEB, CONDENSER YEEB YEEB NKAB |
Tshuaj lom neeg muaj pes tsawg leeg ntawm Astm A789 S31803
| Tiv kis | C | mn | Tau | Q | Yog | Tsis yog | Cr | mo | N |
|---|---|---|---|---|---|---|---|---|---|
| S31803 min | 4.5 | 21.0 | 2.5 | 0.08 | |||||
| S31803 max | 0.03 | 2.0 | 0.02 | 0.03 | 1.0 | 6.5 | 23.0 | 3.5 | 0.20 |
Cov Cuab Yeej Siv Cov Neeg Kho Tshuab ntawm ASTM A789 S31803
| Tiv kis | Tensile Lub Zog KSI (MPA) | Yield zog KSI (MPA) | Elongation (%) | Brinell (HBW) | Rockwell C (HRC) |
|---|---|---|---|---|---|
| S31803 | Ntau dua los yog sib npaug rau 90 (620) | Ntau dua los yog sib npaug rau 65 (450) | Ntau dua los yog sib npaug rau 25 | Ntau dua los yog sib npaug rau 290 | Ntau dua los yog sib npaug rau 30 |
Phab Ntsa Thickness kam Zam Ib ATM A789
| Od ntau | Txiv leej leej txiv | Kev Tiv Thaiv Nruab Nrab Nruab Nrab | Tsawg li tsawg tau |
|---|---|---|---|
| 0 ~ 12.7mm (incl.) | Smls & wld | Рc 15% | 0, {+30% |
| 12.7 ~ 38.1 hli (incl.) | Smls & wld | ± 10% | 0, {+20% |
| 38.1 ~ 88.9mm (incl.) | Smls & wld | ± 10% | 0, {+20% |
| 88.9 ~ 139.7mm (incl.) | Smls & wld | ± 10% | 0, {+20% |
| 139.7 ~ 203.2 hli (incl.) | Smls & wld | ± 10% | 0, {+20% |
Ntev ntev kam rau ASTM A789
| Ntau (m) | Txiv leej leej txiv | Od ntau | Kev nyiaj tau |
|---|---|---|---|
| 0 ~ 24ft (7.3m incl.) | Smls + kub tiav | Txhua qhov ntau thiab tsawg | 0. {+5 hli |
| 0 ~ 24ft (7.3m incl.) | Smls + txias tiav lawm | <50.8mm | 0. {+3 hli |
| 0 ~ 24ft (7.3m incl.) | Smls + txias tiav lawm | Ntau dua los yog sib npaug rau 50.8mm | 0. {+5 hli |
| 0 ~ 24ft (7.3m incl.) | W.l.D. | <50.8mm | 0. {+3 hli |
| 0 ~ 24ft (7.3m incl.) | W.l.D. | Ntau dua los yog sib npaug rau 50.8mm | 0. {+5 hli |
Vim li cas thiaj xaiv GNEE
Gneeyog cov ua lag luam tsim thiab cov xa khoom ntawm UNS tsis muaj S31803 Seamless Duplex kav, muab ntau tshaj1,000 tons txhua xyoorau cov tshuaj, marine thiab aerospace kev lag luam.
Peb Qhov Zoo:
✅ ISO, SGS thiab BV muaj ntawv pov thawj
✅ Qhov loj me thiab saum npoo av tas
✅ Advanced TIG thiab Ntshav Vuam Kab
Cov nqi sib tw Hoobkas Cov nqi thiab tus me nyuam ceev (7-15 hnub)
Ntim khoom siv hluav taws xob: Cov thawv ntoo, noo noo-ua pov thawj qhwv thiab pallet kev tiv thaiv
Ntim thiab xa khoom
Txhua lub raj yog ntim nrog:
PE YAS YAJ NOOG THIAB YOOJ YIM-YOOJ YIM
Npuas qhwv thiab qhov cuab lub zog nrog lub thawv ntoo
Caws daim ntawv lo nrog qib, qhov ntev thiab ntau tus lej
UNRESS UN31803 DUPLEX Steel Seamless Yeeb Nkab
