ASTM A268 Seamless thiab Welded Steel Tubing rau General Service
Txuj: ASTM A268 / ASME SA268
Cov txheej txheem tsim khoom: Seamless (Cold Drawn / Kub tiav), Welded, Txias Ua Haujlwm Welded
Tube Hom: Round Tube, U Tube, Ncaj Tube
Sab nraud txoj kab uas hla (OD): 6.0 mm - 168.3 mm (1/8" - 6")
Phab ntsa Thickness (WT): 0.5 hli - 12.0 hli
Length: 1 - 12 m, Random Length, Tsau Length, Customized
Nto tiav: Pickled (AP), Bright Annealed (BA)
Xaus Xaus: Plain End (PE), Beveled End (BE), Threaded
Muaj Qib: TP405, TP409, TP410, TP430, TP430Ti, TP439, TP444, TP446
Kev kho cua sov: Annealed, daws Annealed
Mill Test Certificate: EN 10204 3.1 / 3.2 Muaj
Ntim: Yas Caps, Waterproof Wrapping, Ntoo Case, Hlau Strips, Export Seaworthy Packing
Xa E-mail:info@gneestainless.com
Tel:+8615824687445
Hauj lwm lawm
Gnee Steel (Tianjin) Co., Ltd. yog ib qho ntawm feem kev manufacturers thiab lwm tus neeg ntawm ASTM A268 Seamless thiab Welded Steel Tubing rau General Service nyob rau hauv Suav teb. Nrog kev paub ntau ntxiv, peb zoo siab tos txais koj rau cov lag luam wholesale customized ASTM A268 Seamless thiab Welded Steel Tubing rau Kev Pabcuam General los ntawm peb lub hoobkas. Rau nqe kev sab laj, tiv tauj peb.
Yog tias koj tab tom nrhiav kev lag luam stainless hlau tubing uas sib npaug tiv thaiv corrosion, siab -kub kev ua haujlwm, txhua yam muaj zog, thiab tus nqi- ua tau zoo,ASTM A268 Seamless thiab Welded Steel Tubingyog ib qho kev xaiv txhim khu kev qha rau cov khoom siv hluav taws xob sib hloov, boilers, automotive tso tshuab, petrochemicals, lub zog tsim hluav taws xob, cov cuab yeej tiv thaiv ib puag ncig, thiab kev thauj mus los ntawm cov dej dav dav.
CovASTM A 268 Cov khoom sivtxheem specification npog seamless thiab welded ferritic thiab martensitic stainless hlau tubing rau kev pab. Cov txheej txheem no suav nrog cov tubing ntawm ntau yam nominal phab ntsa thickness kev ntsuas, featuring ferromagnetic zog thiab muaj peev xwm rau hardening ntawm kev kho cua sov. Siab -chromium ferritic alloys muaj kev cuam tshuam rau qhov brittleness thaum txias maj mam mus rau chav sov.
ASTM A268 tus qauv suav nrog ntau qib ferritic thiab martensitic stainless hlau, xws liTP405, TP410, TP429, TP430, TP443, TP446-1, TP446-2, TP409, TP439, S41500, S44400, S44700, S44635, thiab TP468. Ntawm cov no,TIAB SA 444muaj kev tiv thaiv zoo heev rau chloride kev nyuaj siab corrosion cracking,TIAB SA 446tuav zoo oxidation tsis kam ntawm qhov kub siab tshaj 1000 degree, thaumTIAB SA 409thiabTIAB SA 410muab cov cua sov ua haujlwm zoo, hnav tsis kam, thiab cov txiaj ntsig zoo, ua rau lawv siv dav hauv siab -kub flue roj thiab cov pa tawm.
Nrog tshaj 18 xyoo ntawm kev paub hauv stainless hlau yeeb nkab raug tsim thiab xa tawm,GNEEtau faib khoom rau ntau tshaj 80 lub teb chaws thiab cheeb tsam. Peb muab seamless, welded, thiab txias hnyav - ua haujlwm welded tubing ua raws li ASTM A268 thiab ASME SA268 tus qauv. Siv cov txheej txheem txias txias, txias dov, thiab tsis siv neeg TIG vuam cov txheej txheem, peb cov khoom muaj qhov sib txawv ntawm txoj kab uas hla.6.0-168.3 hli (1/8 "-6")thiab phab ntsa thickness ntawm0.5-12 hli. Peb kuj muab cov kev pabcuam kev cai, suav nrog kev txiav- mus rau-ntev, U- cov hlua khoov, pickling thiab passivation, polishing, thiab ntim tshwj xeeb.
Kev kho cua sov
Tag nrho cov khoom tubular yuav tsum tau txais kev kho cua sov kawg ua ntej tawm hauv lub hoobkas. Feem ntau, ferritic qib yuav tsum tau cua sov mus rau 1,200℃F (kwv yees li 650 degree) los yog siab dua, ua raws li qhov tsim nyog txias, qhov tshwj xeeb martensitic qib (xws li UNS S41500) yuav tsum tau cua sov rau 950℃F (kwv yees li 510 degree) los yog siab dua.
Surface condition
Txhua lub raj yuav tsum tsis pub dhau lub zeb nplai, haum rau kev tshuaj xyuas. Ib qho me me ntawm oxidation yuav tsis suav tias yog nplai. Txhua qhov tshwj xeeb ua tiav yuav tsum tau ua raws li kev pom zoo ntawm cov chaw tsim khoom thiab cov neeg yuav khoom.
ASTM A268 Welded Stainless Hlau Tubing rau General Service Specification
Chemical Composition (Tswj, wt.%)
| Qib | C Max | Cr (%) | Max (%) | Mo (%) | Ti (%) |
|---|---|---|---|---|---|
| TIAB SA 405 | 0.08 | 11.5–14.5 | 0.50 | - | 6×C–0.75 |
| TIAB SA 409 | 0.08 | 10.5–11.75 | 0.50 | - | Stabilized |
| TIAB SA 410 | 0.15 | 11.5–13.5 | 0.75 | - | - |
| TIAB SA 430 | 0.12 | 16.0–18.0 | 0.75 | - | - |
| TP 430 Ti | 0.05 | 16.0–18.0 | 0.75 | - | Stabilized |
| TIAB SA 439 | 0.07 | 17.0–19.0 | 0.50 | - | Tiag Stabilized |
| TIAB SA 444 | 0.025 | 17.5–19.5 | 1.00 | 1.75–2.50 | Ti + Nb Stabilized |
| TIAB SA 446 | 0.20 | 23.0–27.0 | 1.50 | - | - |
Mechanical Properties (yam tsawg kawg nkaus)
| Qib | Tensile zog (MPa) | Yield zog (MPa) | Elongation (%) | Hardness |
|---|---|---|---|---|
| TIAB SA 405 | 415 | 205 | 20 | Tsawg dua lossis sib npaug li 183 HB |
| TIAB SA 409 | 380 | 170 | 20 | Tsawg dua lossis sib npaug li 179 HB |
| TIAB SA 410 | 480 | 275 | 20 | Tsawg dua lossis sib npaug rau 201 HB |
| TIAB SA 430 | 450 | 205 | 22 | Tsawg dua lossis sib npaug li 183 HB |
| TP 430 Ti | 415 | 205 | 22 | Tsawg dua lossis sib npaug li 183 HB |
| TIAB SA 439 | 415 | 205 | 22 | Tsawg dua lossis sib npaug li 183 HB |
| TIAB SA 444 | 415 | 275 | 20 | Tsawg dua lossis sib npaug li 200 HB |
| TIAB SA 446 | 485 | 275 | 20 | Tsawg dua lossis sib npaug rau 217 HB |
ASTM A268 Permissible Variations nyob rau sab nraud (OD)
| Specified Sab Nraud Diameter (in.) | Specified Sab Nraud Diameter (mm) | Permissible Variation (hauv.) | Permissible Variation (hli) |
|---|---|---|---|
| Hauv qab 1/2 | Hauv qab 12.7 | ±0.005 | ±0.13 |
| 1/2 mus rau 1-1/2 | 12.7 txog 38.1 | ±0.005 | ±0.13 |
| 1-1/2 rau hauv qab 3-1/2 | 38.1 rau 88.9 | ±0.010 | ±0.25 |
| 3-1/2 rau qis dua 5-1/2 | 88.9 rau 139.7 | ±0.015 | ±0.38 |
| 5-1/2 rau 8 (nrog) | 139.7 txog 203.2 (nrog) | ±0.030 | ±0.76 |
Permissible Variations nyob rau hauv Phab ntsa Thickness
Phab ntsa tuab tolerances rau ASTM A268 tubing feem ntau qhia raws li feem pua ntawmnominal (nruab nrab) phab ntsatuab.
| Tube Hom | Phab ntsa Thickness kam rau ua (%) |
| Seamless (Cold Finished) |
±10% los yog ±12.5% nyob ntawm seb qib / kev txiav txim) |
| Welded |
±10% |
Nco tseg ntawm "Minimum Wall":Yog hais tias qhov kev txiav txim qhia tias "Muab Phab Ntsa" tsawg kawg nkaus, qhov kev kam rau siab yog feem ntau+20% / -0%(tsis muaj kev tso cai tsis zoo).
ASTM A268 Permissible Variations hauv Txiav Ntev
Cov kev hloov pauv no siv rau qhov ntev 24 ft (7.3 m) lossis tsawg dua.
| Specified Sab Nraud Diameter | Specification Length | Tshaj Siab | Nyob rau Tolerance |
|---|---|---|---|
| Txhua Qhov Loj | Hauv qab 24 ft (7.3 m) | +1/8 nti (+3.2 hli) | 0 |
| Txhua Qhov Loj | 24 ft (7.3 m) thiab tshaj | Ntxiv +1/8 in. (+3.2 mm) rau txhua qhov ntxiv 10 ft (3.0 m) lossis feem ntawm qhov ntawd | 0 |
Rau cov lus nug tshwj xeeb, nyem qhov no mus download tau ASTM A268 PDF.
ASTM A268 Seamless thiab Welded Steel Tubing Export Cov Ntaub Ntawv (Siv)
| Tsis muaj. | Lub Tebchaws | Product Description | Qib | Loj | Ntim (Tons) | Kev lag luam / Daim Ntawv Thov |
|---|---|---|---|---|---|---|
| 1 | Saudi Arabia | ASTM A268 Seamless Stainless Hlau Tubing | TIAB SA 444 | 38.1 × 2.0 hli | 58 | Heat Exchanger Project |
| 2 | United Arab Emirates | ASTM A268 Welded Stainless Hlau Tubing | TIAB SA 409 | 50.8 × 2.5 hli | 76 | Industrial Exhaust System |
| 3 | Qaib ntxhw | ASTM A268 Seamless Stainless Hlau Tubing | TIAB SA 430 | 25.4 × 1.5 hli | 42 | Kev cog qoob loo tshuaj |
| 4 | Is Nrias teb | ASTM A268 Welded Stainless Hlau Tubing | TIAB SA 439 | 63.5 × 3.0 hli | 95 | Fais fab Plant Project |
| 5 | Kaus lim qab teb | ASTM A268 Seamless Stainless Hlau Tubing | TIAB SA 410 | 19.05 × 2.0 hli | 36 | Cov cuab yeej siv tshuab |
Yog tias tam sim no koj tab tom ntsuas ib qhov kev yuav khoom tshwj xeeb, koj puas tau leaning ntawm seamless lossis welded kav? Dab tsi yog qhov yuav tsum tau ua haujlwm kub lossis cov xov xwm corrosive tshwj xeeb koom nrog? Nrog rau cov ntaub ntawv no, kuv tuaj yeem muab cov lus qhia meej ntxiv txog cov khoom siv qib thiab cov phab ntsa thickness specifications.
Kev Tswj Xyuas Zoo
Cov qauv tshwj xeeb muaj rau kev xa khoom sai hauv 7-15 hnub, nrog kev txhawb nqa rau OEM / ODM cov kev pabcuam thiab me me -batch customization. Tsis tas li ntawd, txhua lub raj steel tau dhau 100% eddy tam sim no kuaj (ET) los yog kev sim hydrostatic, PMI cov ntaub ntawv pov thawj, tensile test, flaring test, flattening testing, thiab dimensional inspection kom ua raws li ASTM A268 technical specifications.
High - ntim zoo
1. Npog nrog seaworthy hnab, hexagonal bundled.
2. Ntim hauv plywood thawv / ntoo crates.
3. Ntim hauv cov hlau- cov thawv ntim khoom.
Ntxiv nrog rau cov cim tau piav qhia hauv Specification A1016/A1016M, lub cim yuav tsum qhia seb lub raj yog seamless lossis welded. Marking Qauv:
GNEE STEEL ASTM A268 / A268M UNS S44400 SMLS 44.5 X 4 X 12000MM HEAT NO. XXXXXX MADE IN CHINA
FAQ
Vim li cas ASTM A268 cov raj feem ntau siv hauv cov khoom siv hluav taws xob?
High thermal conductivity: Ferritic steels muaj thermal conductivity ntau dua li cov hlau austenitic.
Tsawg thermal expansion tus nqi: Lawv muab ntau dua qhov kev ruaj ntseg thaum rhuab, txo kev ntxhov siab ntawm cov ntawv raj.
Kev tiv thaiv kev ntxhov siab: Qib xws li TP439 thiab TP444 muaj qhov zoo dua qib 304 thiab 316 hauv cov dej ntws uas muaj cov chloride ions.
Dab tsi yog qhov txawv ntawm ASTM A268 thiab ASTM A213?
ASTM A268 npog seamless thiab welded ferritic thiab martensitic stainless hlau tubing, nrog rau qib xws li TP405, TP410, thiab TP430; ASTM A213 npog tsuas yog seamless ferritic thiab austenitic alloy thiab stainless hlau tubing - suav nrog cov qib siab - alloy steel thiab austenitic stainless hlau qib (xws li T91 lossis TP304)-tab sis tsis suav nrog welded tubing.
Yuav zam tau li cas tom qab vuam A268 steel kav?
Vuam ferritic steels feem ntau ua rau cov nplej coarsening, ua rau brittleness. Cov kev daws teeb meem suav nrog kev siv hluav taws xob qis, txo qhov kub ntawm qhov sib txawv, lossis xaiv cov qib uas muaj cov khoom ruaj khov xws li titanium (Ti) lossis niobium (Nb)-piv txwv li, TP439.
Qhov txawv ntawm TP430 thiab TP439 yog dab tsi?
TP430 yog qib pib. TP439 yog qhov ruaj khov version ntawm TP430 nrog ntxiv titanium (Ti); Qhov no ua rau muaj kev txhim kho weldability thiab tsis kam mus rau intergranular corrosion, ua rau nws nyiam xaiv rau condenser thiab kub exchanger tubing.
Cim npe nrov: ASTM A268 Seamless thiab Welded Steel Tubing rau General Service, Tuam Tshoj ASTM A268 Seamless thiab Welded Steel Tubing rau General Service manufacturers, hoobkas
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