Alloy Steel A335 P5 / P9 / P11 / P12 / P22 / P91 Seamless yeeb nkab
A335 alloy steel seamless yeeb nkab nqi yog $0.85–$2.5/kg hauv 2026. Sib piv P5, P9, P11, P22, P91 kav rau boilers, fais fab nroj tsuag, thiab petrochemical kev pab.
Hom: Seamless
OD: 1/2 "-26"
Thickness: SCH5-SCHXXS
Ntev: 0-12M, Customized
Txheej Txheem: Kub / Cold Rolled, Kub ua haujlwm, Txias kos
Zhengzhou Huitong Yeeb Nkab Khoom Co., Ltd. Peb sov siab txais tos koj mus yuav peb cov hlau alloy a335 p5 / p9 / p11 / p12 / p22 / p91 seamless yeeb nkab. Peb lub Hoobkas kuj lees txais cov kev txiav txim customized. Thov pub dawb kom txaus siab rau peb cov nqi sib tw thiab kev pabcuam zoo heev.
Alloy Steel A335 P5 P9 P11 P22 P91 Seamless Yeeb Nkab Nqe 2026|Supplier & Size Guide
ASTM A335 P5 / P9 / P11 / P12 / P22 / P91 seamless yeeb nkab nqi ntawm $ 0.85 - $ 2.5 / kg hauv 2026 nyob ntawm qib, qhov loj, thiab ntau. Lawv muaj qhov zoo tshaj plaws creep zog thiab kub tsis kam. Cov chrome moly alloy steel kav no tau dav siv nyob rau hauv siab -kub boilers, lub zog tsim, refinery, thiab petrochemical.
Ntawm cov qib no, P91 muab qhov ntsuas kub siab tshaj plaws, thaum P11 thiab P22 tseem nyiam tus nqi- kev xaiv zoo rau cov kav dej siab.
A335 Seamless Yeeb Nkab Nqe Ntau
| Qib | Hom Nqe Ntau Yam | USD/Ton |
| A335 P5 | $1.8–$4.2/kg | $1,800–4,200/Ton |
| A335 P9 | $2.0–$4.8/kg | $2,000–4,800/Tom |
| A335 P11 | $1.5–$4.0/kg | $1,500–4,000/Ton |
| A335 P12 | $1.8–$4.3/kg | $1,800–4,300/Ton |
| A335 P22 | $2.2–$5.0/kg | $2,200–5,000/Ton |
| A335 P91 | $3.5–$8.5/kg | $3,500–8,500/Tom |
Nqe sib txawv raws li: Txoj kab uas hla, Teem caij, Qib, kom muaj nuj nqis, kev kho cua sov, kev xeem yuav tsum tau
Cov ntsiab lus tseem ceeb:
- ASTM A335 P5 / P9 / P11 / P12 / P22 / P91 yog ferritic alloy steel seamless kav rau qhov kub thiab txias.
- Chromium txhim kho oxidation kuj thiab siab -kub corrosion kuj.
- Molybdenum txhim kho kev nkag siab lub zog thiab ua haujlwm rau siab -kub deformation.
- P91 (9Cr-1Mo-V) muab lub zog nkag siab tshaj plaws ntawm cov qib no.
- P11 thiab P22 feem ntau yog xaiv rau cov khoom siv fais fab superheater thiab reheater daim ntaub ntawv.
- Cov txheej txheem vuam zoo thiab PWHT yog qhov tseem ceeb, tshwj xeeb tshaj yog rau P91.
ASME SA335 Yeeb Nkab Specification
| Khoom | Seamless ferritic alloy steel yeeb nkab |
| Khoom siv | Chrome alloy hlau |
| Khoom Qib | Alloy Steel A335 P5 P9 P11 P12 P22 P91 Seamless yeeb nkab |
| Kev tsim khoom | Kub tiav / Txias kos |
| OD Ntau | 1/4 nti txog 36 nti (13.7mm txog 914mm) |
| Ntev | Ib qho random / Ob chav random / Tsau |
| Xaus | Beveled End, Plain End |
| Daim ntawv pov thawj | EN10204 3.1 / 3.2 |
| Ntim | Export Standard packing los yog raws li koj xav tau. |
ASTM A335 Alloy Steel Seamless Pipe yog dab tsi?
ASTM A335 (ASME SA335) npog nominal phab ntsa thiab cov phab ntsa yam tsawg kawg nkaus seamless ferritic alloy - steel yeeb nkab npaj rau siab - kub kev pab cuam. Qib xws li P5, P9, P11, P12, P22, thiab P91. Alloy steel kav yog tsim los rau siab - kub thiab siab - kev siv siab. Cov kav dej no yog tsim los siv seamless kub xov los yog txias txheej txheem thiab muab raws li ASME B36.10M dimensional qauv.
Cov qib uas muaj xws li:
- ASTM A335 P5
- ASTM A335 P9
- ASTM A335 P11
- ASTM A335 P12
- ASTM A335 P22
- ASTM A335 P91
A335 Gr P5, P9, P11, P12, P22, P91 Pipe Chemical Composition
| Qib | C | Mn | P max | S max | Si | Cr | Mo | Lwm tus |
| P5 | 0.15 max | 0.30-0.60 | 0.025 | 0.025 | 0.50 max | 4.00-6.00 | 0.45-0.65 | - |
| P9 | 0.15 max | 0.30-0.60 | 0.025 | 0.025 | 0.25-1.00 | 8.00-10.00 | 0.90-1.10 | - |
| 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 | - |
| P12 | 0.05-0.15 | 0.30-0.61 | 0.025 | 0.025 | 0.50 max | 0.80-1.25 | 0.44-0.65 | - |
| P22 | 0.05-0.15 | 0.30-0.60 | 0.025 | 0.025 | 0.50 max | 1.90-2.60 | 0.87-1.13 | - |
| P91 | 0.08-0.12 | 0.30-0.60 | 0.02 | 0.01 | 0.20-0.50 | 8.00-9.50 | 0.85-1.05 | V 0.18–0.25 |
| N 0.030–0.070 | ||||||||
| 0.40 max | ||||||||
| Al 0.02 max | ||||||||
| Ib 0.06–0.10 | ||||||||
| Ti 0.01 max | ||||||||
| Zr 0.01 max |
ASTM A335 Yeeb Nkab Mechanical Properties
| Qib | Tensile zog (MPa) | Yield zog (MPa) | Hardness |
| P5 | Ntau dua lossis sib npaug li 415 | Ntau dua lossis sib npaug li 205 | Tsawg dua lossis sib npaug li 187 HB |
| P9 | Ntau dua lossis sib npaug li 415 | Ntau dua lossis sib npaug li 205 | Tsawg dua lossis sib npaug rau 217 HB |
| P11 | Ntau dua lossis sib npaug li 415 | Ntau dua lossis sib npaug li 205 | Tsawg dua lossis sib npaug rau 163 HB |
| P12 | Ntau dua lossis sib npaug li 415 | Ntau dua lossis sib npaug li 220 | Tsawg dua lossis sib npaug rau 163 HB |
| P22 | Ntau dua lossis sib npaug li 415 | Ntau dua lossis sib npaug li 205 | Tsawg dua lossis sib npaug li 170 HB |
| P91 | Ntau dua lossis sib npaug li 585 | Ntau dua lossis sib npaug li 415 | Tsawg dua lossis sib npaug li 250 HB |
astm a 335 Pipe Diameter tolerances
| A335 cev | Tshaj | Hauv qab | ||
| INCH (DN) | hauv | mm | hauv | mm |
| 1/8 rau 1 1/2 (DN 6 txog 40) | 1/64 | 0.4 | 1/64 | 0.4 |
| Tshaj 1 1/2 txog 4 (DN 40 txog 100) | 1/32 | 0.79 | 1/32 | 0.79 |
| Tshaj 4 txog 8 (DN 100 txog 200) | 1/16 | 1.59 | 1/32 | 0.79 |
| Tshaj 8 txog 12 (DN 200 txog 300) | 3/32 | 2.38 | 1/32 | 0.79 |
| Tshaj 12 (DN 300) | +/- 1% ntawm qhov teev sab nraud | |||
Phab ntsa thickness kam rau ua
| Tolerances yog nyob rau hauv% |
| 1/8 txog 2 1/2 (DN 6 txog 65) t/D: tshaj 20%, qis dua 12.5% |
| Saum toj no 2 1/2 (DN 65), t/D < lossis=5%: tshaj 22.5%, qis dua 12.5% |
| Saum toj no 2 1/2 (DN 65), t/D > 5%: tshaj 15%, qis dua 12.5% |
| t=Specified Phab ntsa Thickness; D=Qhia tawm sab nraud |
DIN-EN-ASTM A335 Cov khoom sib npaug
| ASTM | DIN Werkstoff | EN |
| A335 Qib P1 | 1.5415 | 16 hmo 3 |
| A335 Qib P11, P12 | 1.7335 | 13CrMo4-5 |
| A335 Qib P22 | 1.738 | 10CrMo9-10 |
| A335 Qib P5 | 1.7362 | X11CrMo5 |
| A335 Qib P9 | - | - |
| A335 Qib P91 | 1.4903 | X10CrMoVNb9-1 |
A335 P11 vs P22 vs P91
| Parameter | ASTM A335 P11 | ASTM A335 P22 | ASTM A335 P91 |
| Chromium Cov ntsiab lus (%) | 1.00 – 1.50 | 1.90 – 2.60 | 8.00 – 9.50 |
| Molybdenum Cov ntsiab lus (%) | 0.44 – 0.65 | 0.87 – 1.13 | 0.85 – 1.05 |
| Max ua haujlwm kub (degree) | ~ 520 degree | ~ 550 degree | ~ 600℃- 625 degree |
| Tensile zog (Min, MPa) | 415 | 415 | 585 |
| Tus nqi txheeb ze | Lub hauv paus (1.0x) | 1.15x | 1.55x |
| Weldability & Preheat Xav tau | Nruab nrab preheat (100℃+) | Siab preheat (150℃+) | nruj preheat & PWHT yuav tsum tau |
"Muab ib daim ntawv qhia ceev rau kuv rau ASTM A335 alloy steel kav rau qhov siab -siab boiler project khiav ntawm 550℃."
| Qib | Khoom siv | Hom kub ntau yam | Main Advantage | Cov ntawv thov siv |
| P11 | 1.25Cr-0.5Mo | 450-550 degree | Tus nqi qis, ua haujlwm kub zoo dua li carbon steel | Boiler raj, refinery rhaub |
| P22 | 2.25Cr-1Mo | 500-600 degree | Zoo heev creep zog thiab oxidation kuj | Main chav kab, superheater piping |
| P91 | 9Cr-1Mo-V | 550-650 degree | Siab creep zog heev, thinner phab ntsa tsim | Ultra-cov boilers supercritical |
"Piv tus nqi piv rau kev ua tau zoo ntawm P11, P22, thiab P91 rau cov roj refinery piping."
| Parameter | ASTM A335 P11 | ASTM A335 P22 | ASTM A335 P91 |
| Hom khoom | 1.25Cr-0.5Mo Alloy hlau | 2.25Cr-1Mo Alloy hlau | 9Cr-1Mo-V Alloy Steel |
| Tus nqi (FOB Tuam Tshoj) | $0.8-3.0 / kg | $ 1.5-4.0 / kg | $3.0–7.0/Kg |
| Tensile zog (Min.) | 415 MPa rau | 415 MPa rau | 585 MPa ua |
| Yield zog (Min.) | 205 MPa | 205 MPa | 415 MPa rau |
| Creep Strength Index | 1 | 1.4–1.6 | 2.5–3.0 |
| Kev Pabcuam Kub | Tsawg dua lossis sib npaug li 540 degree | Tsawg dua lossis sib npaug li 580-600 degree | Tsawg dua lossis sib npaug li 620-650 degree |
| Oxidation Resistance | Zoo | Zoo dua | Zoo heev |
| Creep Resistance | Nruab nrab | Siab | Siab heev |
| Tej kev siv | Boiler raj, refinery rhaub, nruab nrab kub chav | Cov kab tseem ceeb hauv chav, superheater, refinery siab -siab chav | Ultra-supercritical boilers, siab- fais fab nroj tsuag |
| Main Advantage | Tus nqi qis tshaj | Qhov zoo tshaj tus nqi / kev ua haujlwm sib npaug | Qhov kub thiab txias tshaj plaws kev ua haujlwm |
"Dab tsi yog hom kev ua tsis tiav ntawm P22 thiab P91 cov kav dej hauv cov chaw tsim hluav taws xob?"
Case: P22 Pipe Creep Failure nyob rau hauv Fais Cog Chav Kab
Teeb meem:
Lub tshuab hluav taws xob tau ntsib kev tawg tom qab ua haujlwm ntev -.
Kev ua haujlwm zoo:
Kub: 560 degree
Siab: 18 MPa
Lub sijhawm ua haujlwm: 120,000 teev
Kev soj ntsuam tsis ua tiav pom: Creep puas; Carbide nag lossis daus; Microstructure degradation
Keeb kwm:
Cov yeeb nkab tau ua haujlwm dhau nws lub neej tsim qauv qub.
Kev daws:
Hloov kho los ntawm P22 rau P91.
Cov txiaj ntsig:
Siab dua tso cai
Txo cov creep deformation
Lub neej ua haujlwm ntev dua
ASTM A335 P91 Seamless Yeeb Nkab rau Ultra-Supercritical Fais Fab Cog
Chav kub: 600 degree
Siab: 25 MPa
Vim li cas? ASTM A335 P91 Seamless Yeeb Nkab muab: Ntau dua creep zog; Txo cov yeeb nkab thickness; Ntev tsim lub neej
"Vim li cas P22 nyiam dua cov pa roj carbon steel hauv siab -cov kab hluav taws xob siab?"
Carbon steel poob lub zog sai dua 400 degree.
Chrome moly alloy steel tuav:
- Siab zog tensile
- Zoo dua creep kuj
- Txhim kho oxidation tsis kam
- Lub neej ua haujlwm ntev dua
ASTM A335 P22 / P91 rau Refinery Hydrogen Unit
- Kev Pabcuam: Siab -kub hydrogen ib puag ncig
- P22 / P91 nyob ntawm qhov kub thiab txias
- Kev xav: Hydrogen nres tsis kam; Ntev - lub sij hawm muaj zog; Kev tshuaj ntsuam xyuas
Vuam
Vuam & Preheat: Cr-Mo alloy steel kav xws li P22 thiab P91 yog qhov ua rau huab cua- khov thiab txias tawg yog tias tsis quav ntsej cov txheej txheem vuam. Nco ntsoov siv preheating kom zoo (feem ntau 150℃-250℃nyob ntawm tuab thiab qib) thiab tswj qhov kub ntawm qhov sib txawv.
Tshaj tawm - Kev Kho Hniav Kub Kub (PWHT): Yuav tsum tau ua rau cov qib zoo li P11, P22, thiab P91 txhawm rau txo qis qhov seem ntawm vuam, rov ua kom tawv nqaij, thiab ua kom tawv tawv.
P91 Vuam
| Preheat kub | 200-300 degree |
| Vuam txoj kev | GTAW + SMAW |
| Filler hlau | ER90S -B9 / E9015-B9 |
| PWHT | Yuav tsum tau |
Tej teeb meem welding:
1. Hydrogen tawg
Ua rau: noo noo paug; Tsis raug electrode cia; Siab txias txias
2. Ntau dhau hardness nyob rau hauv Heat Afected Zone (HAZ)
Uas: Tsis yog preheating. Kev tshaj tawm tsis raug -weld heat treatment
Kev kho cua sov
ASTM A335 steel yeeb nkab yuav tsum tau rov ua kom puv -anneal, isothermal-anneal, los yog normalize-thiab- temper condition. Thaum muab tso rau hauv qhov qub thiab tempered, cov hlau qib P5, P9, P21, thiab P22 yam tsawg kawg nkaus tempering kub yuav tsum yog 1250℃F [675 degree], thiab 1200℃F [650 degree] rau steel qib P1, P2, P11, P12, thiab P15.
Corrosion Teeb meem ntawm ASTM A335 Alloy Steel Pipe
Puas yog P91 zoo dua P22?
P91 muaj zog nkag siab dua thiab muaj peev xwm kub, tab sis P22 yooj yim rau vuam, pheej yig dua, thiab siv dav dua.
ASTM A335 P22 puas tuaj yeem hloov cov pa roj carbon steel yeeb nkab?
Yog lawm. P22 feem ntau yog xaiv rau siab - cov kab hluav taws xob siab qhov twg cov hlau tsis muaj zog vim yog siab - kub nkag.
ASTM A335 qib twg yog qhov zoo tshaj rau 550℃chav?
P22 feem ntau nyiam, thaum P91 raug xaiv thaum muaj kev ua haujlwm siab dua thiab tsim phab ntsa nyias.
Ntim:
- Bundles (hexagonal)
- Ntoo thawv
- Crates (steel / ntoo)
- Cov khoom tshwj xeeb rau U- Khoov kav nrog txhua lub vojvoog sib cais
- raws li tus neeg siv khoom xav tau
Cov qauv xa mus
- ASTM A335 Cov Lus Qhia Tshwj XeebHloov tshiab kawg: Plaub Hlis 15, 2026: Standard Specification for Seamless Ferritic Alloy-Steel Pipe for High-Tsev Kev Pabcuam
- ASME B36.10M qhov ntev tus qauv rau welded thiab seamless steel yeeb nkab
- ASTM A999 / A999M, Txuj kev qhia tshwj xeeb rau cov tseev kom muaj rau stainless thiab alloy steel yeeb nkab
- ASTM A92, Hardness test method rau steel cov ntaub ntawv
- E213, Cov lus qhia thiab kev xyaum rau kev kuaj ultra sonic ntawm steel yeeb nkab thiab raj
FAQ:
Q: Dab tsi yog qhov txawv ntawm P11 thiab P22 alloy steel kav?
A: P22 muaj kwv yees li ntawm 2.25% Chromium thiab 1% Molybdenum (piv rau P11's 1.25% Cr), muab qhov siab tshaj - qhov kub thiab txias tsis kam, ua rau nws cov qauv kev lag luam rau lub zog cog superheater loops.
Q: P91 puas tuaj yeem welded yam tsis muaj preheating?
A: Tsis yog kiag li. P91 xav kom nruj preheating (feem ntau yog 200℃-300 degree) thiab tswj PWHT kom tsis txhob muaj kev puas tsuaj rau qhov tawg vim nws cov martensitic microstructure.
Q: Tus nqi ntawm ASTM A335 P91 seamless yeeb nkab nyob rau hauv 2026 yog dab tsi?
A:ASTM A335 P91 seamless yeeb nkab nqi feem ntau nyob ib ncig ntawm$3.5–$8.5/kgnyob ntawm cov yeeb nkab loj, phab ntsa thickness, kom muaj nuj nqis, kev xeem yuav tsum tau, thiab qhov chaw muag khoom. P91 kim dua vim tias nws muaj ntau dua chromium, molybdenum, vanadium, thiab yuav tsum tau kho cua sov kom nruj.
Q: Qhov txawv ntawm A335 P22 thiab P91 yeeb nkab yog dab tsi?
A:P91 muaj cov ntsiab lus chromium ntau dua (kwv yees li 9% Cr) thiab muab lub zog nkag siab zoo dua piv nrog P22 (2.25% Cr). P91 yog qhov zoo dua rau qhov kub siab tshaj 580 degree, thaum P22 yog dav siv rau cov pa siab siab -kub chav tshuab.
Q: Vim li cas P22 nyiam dua cov pa roj carbon steel hauv siab - cov kab hluav taws xob siab?
A:P22 muaj chromium thiab molybdenum, uas txhim kho oxidation kuj thiab creep zog. Cov pa roj carbon steel poob txhua lub zog sai dua ntawm qhov kub siab, ua rau P22 muaj kev nyab xeeb rau lub sijhawm ntev - chav ua haujlwm.
Q: ASTM A335 qib twg yog qhov zoo tshaj plaws rau kev siv boiler?
A:Qib zoo tshaj yog nyob ntawm kev ua haujlwm:
P11 / P12 → nruab nrab kub boilers
P22 → siab -siab boilers
P91 → ultra-supercritical boilers saum 580 degree
Hais txog Zhengzhou Huitong Pipeline Equipment Co., LTD.
HT PIPE yog ib tug zoo-paub stockist thiab exporter. Peb yog cov khoom siv stainless / carbon / npib tsib xee alloy khoom xa khoom nrog 15+ kev xa tawm. Peb tsis tsuas yog muab cov kav dej, phaj, puag ncig, tab sis kuj yog cov yeeb nkab fittings, flanges, thiab lwm yam. Tiv tauj peb kom paub ntau ntxiv thiab cov nqi dawb.
✅ ISO 9001: 2015
✅ MTC 10204 3.1 3.2
✅ 100% PMI (Positive Material Identification)
✅ Ultrasonic Testing (Rau ASME VIII)
✅ Thib peb-Kev Tshawb Fawb (SGS/BV/DNV/LR)
✅ NACE MR0175 / ISO 15156
Author: Chloe Pu
5+ Xyoo ntawm Kev Tshaj Lij Tshaj Plaws hauv Stainless Hlau, Nickel Alloy & Carbon Steel Hlau Kev Lag Luam
Hloov tshiab kawg: Lub Xya hli ntuj 8, 2026 (Beijing Sijhawm)
Cim npe nrov: alloy steel a335 p5/p9/p11/p12/p22/p91 seamless yeeb nkab, Tuam Tshoj, manufacturers, hoobkas, nqe, customized
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