ASME SA-335M / ASTM A335M: Seamless Ferritic Alloy-Steel Pipe rau Kev Pabcuam Kub Kub (METRIC)
1. Txheej txheem cej luam & Metric Standard tseem ceeb
ASME SA-335Myog covmetric versionntawm ASME SA-335, pom zoo rauASME Boiler thiab Pressure Vessel Code (BPVC) Tshooj II, Ntu Akev tsim kho. Lub ntsiab lus "M" qhiatsuas yog siv SI (metric) unitsthoob plaws qhov kev qhia - qhov ntev, qhov ntsuas qhov ntsuas, thiab qhov kam rau ua.
Qhov txawv ntawm qhov tseem ceeb:SA-335M yogtsis yog kev hloov pauv ncaj qhantawm SA-335 - nws yog ibparallel metric specificationnrog rau qhov loj me thiab cov kev ntsuas ntsuas tau qhia tsuas yog hauv SI units.
2. Metric vs. Inch Standards Comparison
| Yam | ASME SA-335M (Metric) | ASME SA-335 (Ntiv) | Qhov txawv tseem ceeb |
|---|---|---|---|
| Unit System | Tsuas yog SI units | Tsuas yog ntiv tes - phaus units | Tsis pub sib tov ntawm cov units |
| Dimensional Series | DN (hli nominal)qhov ntau thiab tsawg | NPS (Nominal Pipe Size)qhov ntau thiab tsawg | Sib txawv me me gradations |
| Phab ntsa Thickness | mm(hli) | nti(fractions/decimal) | Cov txheej txheem sib txawv |
| Tolerances | mmraws li kam rau ua | ntiraws li kam rau ua | xam txawv |
| Ntsuas qhov nqi | MPa(megapascals) | ksi ua(kips ib square inch) | 1 ksi=6.895 MPa |
| Kev txiav txim | Yuav tsum qhiametric qhov ntau thiab tsawg | Yuav tsum qhiaqhov ntau thiab tsawg | Tsis tuaj yeem sib xyaw ua ke hauv ib qho kev txiav txim |
3. ASME SA-335M Qib & Metric Designations
Ferritic Alloy Steel Qib (Ib Qib Qib, Metric Units)
| Qib | UNS No. | ASME P-No. | Sib npaug rau SA-335 |
|---|---|---|---|
| P1 | K11522 | P-Tsis yog. 3 | P1 |
| P2 | K11547 | P-Tsis yog. 3 | P2 |
| P5 | K41545 | P-Tsis yog. 4 | P5 |
| P5b | K51545 | P-Tsis yog. 4 | P5b |
| P9 | S50400 | P-Tsis yog. 5B | P9 |
| P11 | K11597 | P-Tsis yog. 4 | P11 |
| P12 | K11562 | P-Tsis yog. 4 | P12 |
| P22 | K21590 | P-Tsis yog. 5A | P22 |
| P91 | K90901 | P-Tsis yog. 5B | P91 |
| P92 | K92460 | P-Tsis yog. 15E | P92 |
| P122 | K91603 | P-Tsis yog. 15E | P122 |
* Ceeb Toom: Cov tshuaj muaj pes tsawg leeg zoo ib yam ntawm SA-335 thiab SA-335M *
4. Metric Size Designations & Dimensional System
DN (Diameter Nominal) Qhov sib npaug
| DN Loj (mm) | Kwv yees li. NPS sib npaug | Common OD (mm) | Common Phab Ntsa Thickness Range (mm) |
|---|---|---|---|
| DN 15 | NPE ½ | 21.3 | 2.0 - 4.0 |
| DN 25 | NPE 1 | 33.4 | 2.5 - 6.0 |
| DN 50 | NPE 2 | 60.3 | 2.5 - 8.0 |
| DN 80 | NPE 3 | 88.9 | 3.0 - 10.0 |
| DN 100 | NPE 4 | 114.3 | 3.0 - 12.0 |
| Qauv: DN150 | NPE 6 | 168.3 | 3.5 - 14.0 |
| DN 200 | NPE 8 | 219.1 | 4.0 - 18.0 |
| TSI DN 300 | NPE 12 | 323.9 | 5.0 - 25.0 |
| NPE 400 | NPE 16 | 406.4 | 6.0 - 30.0 |
| DN 500 | NPE 20 | 508.0 | 6.0 - 35.0 |
Phab ntsa Thickness Designations (Metric)
| Lub npe | Kev piav qhia | Piv txwv |
|---|---|---|
| Teem caij | Metric sib npaug sij hawm | Sch 10S, 20, 40, 80, 160 |
| mm tuab | Direct phab ntsa thickness nyob rau hauv mm | 6.0mm, 8.0mm, 12.5 hli |
| Series | Phab ntsa thickness series | Series 1, Series 2 (ISO 4200) |
5. Chemical Composition (SI Units - Zoo tib yam rau Inch Version)
| Qib | C (%) | Mn (%) | P Max (%) | S Max (%) | Si (%) | Cr (%) | Mo (%) | Lwm Yam Khoom |
|---|---|---|---|---|---|---|---|---|
| P11 | 0.05-0.15 | 0.30-0.60 | 0.025 | 0.025 | 0.50-1.00 | 1.00-1.50 | 0.44-0.65 | - |
| P22 | 0.05-0.15 | 0.30-0.60 | 0.025 | 0.025 | 0.50 | 1.90-2.60 | 0.87-1.13 | - |
| P91 | 0.08-0.12 | 0.30-0.60 | 0.020 | 0.010 | 0.20-0.50 | 8.00-9.50 | 0.85-1.05 | V, Nb, N |
| P92 | 0.07-0.13 | 0.30-0.60 | 0.020 | 0.010 | 0.50 | 8.50-9.50 | 0.30-0.60 | V, Nb, N, W |
6. Mechanical Properties (SI Units - MPa)
| Qib | Tensile zog Min (MPa) | Yield zog Min (MPa) | Elongation Min (%) | Hardness Max (HB) |
|---|---|---|---|---|
| P1, P2, P12 | 380 | 205 | 30 | 163 |
| P11, P22 | 415 | 205 | 30 | 163 |
| P5, P9 | 415 | 205 | 30 | 163 |
| P91 | 585 | 415 | 20 | 250 |
| P92 | 620 | 440 | 20 | 250 |
| P122 | 620 | 400 | 20 | 250 |
7. Dimensional Tolerances (Metric - hli)
| Dimension | Kev kam rau siab rau DN Tsawg dua lossis sib npaug rau 101.6 hli | Kev kam rau siab rau DN> 101.6 mm |
|---|---|---|
| Sab nraud txoj kab uas hla | ± 0.4 hli lossis ± 0.75% ntawm OD, qhov twg ntau dua | ± 0.75% ntawm OD |
| Phab ntsa Thickness | +0 / -12.5% ntawm nominal phab ntsa | +0 / -10% ntawm nominal phab ntsa |
| Ovality | Max 1.5% ntawm OD | Max 1.0% ntawm OD |
| Ntev | +3 mm / -0 mm rau random lengths | +3 mm / -0 mm rau random lengths |
| Kev ncaj | 0.5 hli rau 300 hli ntev | 1.5mm rau ib 'meter' ntev |
8. Hydrostatic Test Requirements (Metric)
| Yeeb Nkab Loj | Yam tsawg kawg Test Pressure Formula | Hom Kev Ntsuas Siab Ntau Yam |
|---|---|---|
| Txhua Qhov Loj | P=2St/D Qhov twg: P=Kev ntsuas siab (MPa) S=Kev ntxhov siab (MPa) - feem ntau 70% ntawm SMYS t=Phab ntsa thickness (mm) D=Sab nraud txoj kab uas hla (mm) |
10-40 MPa(1450-5800 psi) nyob ntawm qhov ntev |
Piv txwv xam rau DN 100, phab ntsa 8.0 mm:
P=(2 × 145 MPa × 8.0 mm) / 114.3 hli =20.3 MPa siab(≈2940 psi)
9. Ordering Information rau SA-335M
Cov ntaub ntawv yuav tsum tau rau Metric Orders:
Specification:ASME SA-335M (yuav tsum suav nrog "M")
Qib:P11, P22, P91, thiab lwm yam.
Loj: DNloj OROD × WT hauv mm
Ntev:Meters (tsis ko taw)
Kev tsim kho Code:II, III, VIII
Txhua units yuav tsum yog metric
Piv txwv li SA-335M Purchase Order:
ntawv nyeem
ASME SA-335M P91 Loj: DN 250, OD 273.0 mm × WT 20.0 mm Length: 8.0 meters, tiaj kawg Quantity: 50 pieces Siv: ASME Tshooj I Thaum tshav kub kub kho: Normalized & Tempered ib SA- Ntxiv: Ultraonic Requirement-35% Examination rau ASME Sec V Art 4 - Hydrostatic test ntawm 25 MPa yam tsawg kawg nkaus - Kev ntsuas cuam tshuam ntawm -20℃- ASME MTR Daim ntawv nrog cov ntsuas ntsuas nkaus xwb - Txhua qhov ntev hauv mm, siab hauv MPa
10. Metric vs Inch Conversion Challenges
| Kev sib tw | Kev daws | ASME Kev Qhia |
|---|---|---|
| Qhov loj me tsis sib haum | Siv cov metric sib npaug, tsis yog kev hloov pauv | ASME B36.19M rau metric yeeb nkab ntau thiab tsawg |
| Teem caij sib txawv | Siv qhov tseeb mm thickness, tsis teem caij hloov dua siab tshiab | Phab ntsa thickness rooj hauv SA-335M |
| Ntsuas ntsuas ntsuas | Qhia meej MPa, tsis yog psi hloov pauv | Hydro test formula hauv SA-335M |
| Cov ntaub ntawv pov thawj | MTR yuav tsum qhia qhov ntsuas qhov ntsuas nkaus xwb | ASME Sect II, Part A cov tseev kom muaj |
| Tsim kev suav | Siv cov metric tso cai rau kev ntxhov siab | ASME Sect II, Part D (metric) |
11. Ntiaj teb no Metric Standards Harmonization
| ASME SA-335M Qib | ISO 9329-2 Qib | EN 10216-2 Qib | GOST 8731 Qib |
|---|---|---|---|
| P11 | 13CrMo4-5 | 13CrMo4-5 | 13ХМ |
| P22 | 10CrMo9-10 | 10CrMo9-10 | 10Г2 |
| P91 | X10CrMoVNb9-1 | X10CrMoVNb9-1 | - |
12. Kev siv ntau rau Metric Piping
| Kev lag luam | Tej kev siv | Cov Chav Tsev nyiam |
|---|---|---|
| European fais fab nroj tsuag | Main chav kab, kub reheat kab | Metric (DN qhov ntau thiab tsawg) |
| Neeg Esxias Petrochemical | High -kub txheej txheem piping | Metric (hli) |
| International EPC Projects | Turnkey cog kev tsim kho | Metric (SI system) |
| Nuclear (sab nraum US) | Reactor coolant kab, chav kab | Metric (ISO qauv) |
| Marine (tsis yog-US) | Boiler piping, tso pa system | Metric (DN / PN system) |
13. Kev txiav txim siab tsim qauv rau Metric Piping
| Tsim Aspect | Metric xyaum | Hloov Factor |
|---|---|---|
| Tso cai Stress | Table 1A (MPa tus nqi) | 1 ksi=6.895 MPa |
| Lub cev hnyav | kg / m (kg / m) | 1 lb/ft=1.488 kg/m |
| Tus nqi ntws | m³ / h (cub meters ib teev) | 1 gpm=0.227 m³/h |
| Kev ntsuas siab | PN (Pressure Nominal) chav kawm | PN 40=Chav Kawm 300 approx |
| Flange Standards | TS EN 1092-1 ASME B16.47 Series B | Txawv bolt qauv |
14. Daim ntawv pov thawj rau SA-335M
| Cov ntaub ntawv | Metric Requirements | Sau ntawv |
|---|---|---|
| ASME MTR | Tag nrho cov nqi hauv SI units | Yuav tsum hais "SA-335M" |
| Cov ntawv xeem | MPa, mm,℃xwb | Tsis pub dual units |
| Cov ntaub ntawv kho cua sov | Kub nyob rau hauv degree | Tsis muaj℃F hloov pauv |
| Dimensional Reports | Kev ntsuas hauv mm | Nrog metric tolerances |
| Kos npe | suav nrog "M" hauv lub cim | SA-335M P91 |
15. Kev tsim khoom zoo tshaj plaws
Qhia meej meej:Ib txwm suav nrog "M" hauv kev qhia tshwj xeeb
Tsis txhob hloov pauv:Txiav txim qhov loj me me, tsis txhob hloov los ntawm nti
Xyuas Cov Chav:Tshawb xyuas tag nrho cov ntaub ntawv rau cov chav SI zoo ib yam
Cov neeg muab khoom thoob ntiaj teb:Tau qhov twg los ntawm mills paub txog metric ntau lawm
Kev sib xyaw tsim:Xyuas kom tag nrho cov khoom yog metric (flanges, li qub, fittings)
16. Tej yam uas yuav tsum zam
| yuam kev | Qhov tshwm sim | Kev kho |
|---|---|---|
| Ordering SA-335 rau metric project | Ntiv qhov loj me muab, qhov project qeeb | Ib txwm qhia SA-335M |
| Mixing units hauv PO | Tsis meej pem, cov khoom siv tsis raug | Siv cov ntsuas ntsuas xwb |
| Piv txwv li teem caij sib npaug | Tsis yog phab ntsa thickness xa | Qhia qhov tseeb mm thickness |
| Siv cov kev ntsuas hloov siab los ntseeg | Tshaj / nyob rau hauv kev sim cov kav dej | Siv cov txiaj ntsig MPa los ntawm tus qauv |
| Tsis hais "M" ntawm MTR | Cov ntaub ntawv tsis lees paub los ntawm tus neeg soj ntsuam | Yuav tsum tau "SA-335M" ntawm tag nrho cov ntaub ntawv |
17. Kev Tsim Kho Kev Lag Luam Kev Lag Luam
| Thaj tsam | Thawj Standard | Hloov pauv xwm txheej |
|---|---|---|
| Teb chaws Europe | EN / ISO ntsuas | Tag nrho metric |
| Asia | Mixed- Nyiv (JIS metric), Tuam Tshoj (GB metric) | Feem ntau yog metric |
| North America | ASME inchnrog metric kev xaiv | Dual system, nti dominant |
| Middle East | Qhov project tshwj xeeb | Feem ntau metric rau tej yaam num tshiab |
| South America | Mixed | Nce metric saws |
18. Yav tom ntej Outlook
ISO harmonization:Txhim kho kev sib raug zoo ntawm ASME SA-335M thiab ISO 9329-2
Digital ntxaib:Metric cov ntaub ntawv kev koom ua ke rau kev tsim cov nroj tsuag ntse
Ntiaj teb no tej yaam num:Metric ua lub neej ntawd rau kev ua haujlwm thoob ntiaj teb EPC
Code unification:ASME tau txais ntau dua ISO metric qauv
ASME SA-335Mmuab covCode- pom zoo metric txoj kevrau siab -kub alloy steel piping nyob rau hauv lub ntiaj teb no tej yaam num. Nws tsuas yog siv SI units tshem tawm cov kev hloov pauv tsis raug thiab ua kom muaj kev sib raug zoo nrog cov qauv kev lag luam thoob ntiaj teb. Rau cov haujlwm sab nraud North America lossis rau ntau lub koom haum, SA-335M feem ntau yognyiam specificationrau seamless alloy piping.
