ASTM A335 Alloy Steel P11 Seamless Pipes
Alloy Steel P11 Seamless Pipe Table of Content
- Product Specifications Of Alloy Steel P11 Seamless Pipes
- Material Details Of Alloy Steel P11 Seamless Pipes
- Chemical Composition Of Alloy Steel P11 Seamless Pipes (% by Weight)
- Mechanical Properties Of Alloy Steel P11 Seamless Pipes
- STM A335 Alloy Steel P11 Seamless Pipes Equivalent Grades
- Alloy Steel P11 Seamless Pipes Outside Diameter
- Grade P11 Fabricated Piping Wall thickness
- ASTM A335 P11 Material Heat Treatment Requirements
- SA335 P11 Pipe Tensile Requirements
- Chart & ASTM A335 P11 Pipe Weight
- ASTM A335 Grade P11 Alloy Steel Seamless Pipe
- Types Of Alloy steel P11 Seamless Pipes
- Certifications & Quality Assurance
- Certifications & Quality Assurance
- Applications & Industries Served
- Product Availability & Delivery
- What’s the Price of Alloy Steel P11 Seamless Pipes Per KG in India?
- Why Choose Lakshya Steel for Alloy Steel P11 Seamless Pipes?
- FAQ’s Of Alloy Steel P11 Seamless Pipes
As a reputed alloy steel P11 seamless pipes manufacturer we offer pipes that match the strict demands of ASME SA335 standards. These seamless pipes are produced using premium alloy steel and go through intense quality testing to guarantee size accuracy, metal processing integrity and enduring dependability in rigorous environments.
Our Alloy Steel P11 Seamless Pipes are perfect for operations involving high temperatures and proactive service conditions like superheaters, heat exchangers, reheaters and pressure vessels. Available in a large variety of sizes and wall thicknesses they are supplied with full transparency, test certification and modification options to match targeted project needs.
Whether you’re sourcing for a large-scale EPC project or a maintenance shutdown, our P11 seamless pipes are ready to ship globally with short lead times and consistent quality.
Product Specifications Of Alloy Steel P11 Seamless Pipes
The following table outlines the key product specifications for Alloy Steel P11 Seamless Pipes:
Specification | Details |
Standard | ASTM A335 / ASME SA335 |
Grade | P11 |
Product Type | Seamless Ferritic Alloy Steel Pipes |
Manufacturing Process | Hot Finished / Cold Drawn Seamless |
Size Range (OD) | 1/2” NB to 36” NB (custom sizes available on request) |
Wall Thickness | SCH 20 to SCH XXS / Custom thickness available |
Length | Single Random, Double Random, or Custom Cut Lengths |
Pipe Ends | Plain End (PE), Beveled End (BE), Threaded End (TE) |
Heat Treatment | Normalizing, Tempering, Quenching & Tempering (if required) |
Surface Finish | Black, Bare, Varnished, or Coated |
Testing & Inspection | Hydrostatic, Ultrasonic, Eddy Current, NDT, Visual, PMI |
Compliance | NACE MR0175, IBR, PED 2014/68/EU, ISO 9001 |
Material Details Of Alloy Steel P11 Seamless Pipes
Chemical Composition Of Alloy Steel P11 Seamless Pipes (% by Weight)
Element | Carbon (C) | Manganese (Mn) | Phosphorus (P) | Sulfur (S) | Silicon (Si) | Chromium (Cr) | Molybdenum (Mo) |
Composition | 0.05–0.15 | 0.30–0.60 | ≤ 0.025 | ≤ 0.025 | 0.50–1.00 | 1.00–1.50 | 0.44–0.65 |
Mechanical Properties Of Alloy Steel P11 Seamless Pipes
Property | Tensile Strength | Yield Strength (0.2% Offset) | Elongation | Hardness (HBW) | Impact Strength |
Value | ≥ 415 MPa | ≥ 205 MPa | ≥ 30% | ≤ 163 HB | As per standard/application |
ASTM A335 P11 Pipe Equivalent :
Equivalent Standards: EN 10216-2, ASTM A213, ASME SA213, GOST 550-75, NBR 5603
Alloy Steel Material: P11, K11597
Schedule: SCH5, SCH10, SCH10S, SCH20, SCH30, SCH40, SCH40S, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXS
ASTM | ASME | Equivalent Material | JIS G 3458 | UNS | BS | DIN | ISO | ABS | NK | LRS |
A335 P11 | SA335 P11 | T11 | STPA 23 | K11597 | 3604 P1 621 | – | – | ABS 11 | KSTPA 23 | – |
Alloy Steel P11 Pipes Outside Diameter :
Hot rolled | Outside Diameter, mm | Tolerance, mm |
OD≤101.6 | +0.4/-0.8 | |
101.6<OD≤190.5 | +0.4/-1.2 | |
190.5<OD≤228.6 | +0.4/-1.6 | |
Cold Drawn | Outside Diameter, mm | Tolerance, mm |
OD<25.4 | ±0.10 | |
25.4≤OD≤38.1 | ±0.15 | |
38.1<OD<50.8 | ±0.20 | |
50.8≤OD<63.5 | ±0.25 | |
63.5≤OD<76.2 | ±0.30 | |
76.2≤OD≤101.6 | ±0.38 | |
101.6<OD≤190.5 | +0.38/-0.64 | |
190.5<OD≤228.6 | +0.38/-1.14 |
Grade P11 Fabricated Piping Wall thickness :
Hot rolled | Outside Diameter, mm | Tolerance, % |
OD≤101.6, WT≤2.4 | +40/-0 | |
OD≤101.6, 2.4<WT≤3.8 | +35/-0 | |
OD≤101.6, 3.8<WT≤4.6 | +33/-0 | |
OD≤101.6, WT>4.6 | +28/-0 | |
OD>101.6, 2.4<WT≤3.8 | +35/-0 | |
OD>101.6, 3.8<WT≤4.6 | +33/-0 | |
OD>101.6, WT>4.6 | +28/-0 | |
Cold Drawn | Outside Diameter, mm | Tolerance, % |
OD≤38.1 | +20/-0 | |
OD>38.1 | +22/-0 |
ASTM A335 P11 Material Heat Treatment Requirements :
Grade | Heat Treatment Type | Normalizing Temperature Range F [C] | Subcritical Annealing or Tempering
Temperature Range F [C] |
P5 (b,c) | Full or Isothermal Anneal | ||
Normalize and Temper | ***** | 1250 [675] | |
Subcritical Anneal (P5c only) | ***** | 1325 – 1375 [715 – 745] | |
P9 | Full or Isothermal Anneal | ||
Normalize and Temper | ***** | 1250 [675] | |
P11 | Full or Isothermal Anneal | ||
Normalize and Temper | ***** | 1200 [650] | |
P22 | Full or Isothermal Anneal | ||
Normalize and Temper | ***** | 1250 [675] | |
P91 | Normalize and Temper | 1900-1975 [1040 – 1080] | 1350-1470 [730 – 800] |
Quench and Temper | 1900-1975 [1040 – 1080] | 1350-1470 [730 – 800] |
SA335 P11 Pipe Tensile Requirements :
Seamless | |||||
P-5 | P-9 | P-11 | P-22 | P-91 | |
Tensile Strength, min., psi | |||||
ksi | 60 | 60 | 60 | 60 | 85 |
MPa | 415 | 415 | 415 | 415 | 585 |
Yield Strength, min., psi | |||||
ksi | 30 | 30 | 30 | 30 | 60 |
MPa | 205 | 205 | 205 | 205 | 415 |
Chart & ASTM A335 P11 Pipe Weight :
Welded and seamless ASTM A335 P11 Pipe
Grade | Heat Treatment Type | Normalizing Temperature Range F [C] | Subcritical Annealing or Tempering
Temperature Range F [C] |
P5 (b,c) | Full or Isothermal Anneal | ||
Normalize and Temper | ***** | 1250 [675] | |
Subcritical Anneal (P5c only) | ***** | 1325 – 1375 [715 – 745] | |
P9 | Full or Isothermal Anneal | ||
Normalize and Temper | ***** | 1250 [675] | |
P11 | Full or Isothermal Anneal | ||
Normalize and Temper | ***** | 1200 [650] | |
P22 | Full or Isothermal Anneal | ||
Normalize and Temper | ***** | 1250 [675] | |
P91 | Normalize and Temper | 1900-1975 [1040 – 1080] | 1350-1470 [730 – 800] |
Quench and Temper | 1900-1975 [1040 – 1080] | 1350-1470 [730 – 800] |
ASTM A335 Grade P11 Alloy Steel Seamless Pipe
Sizes, Dimensions and weights section modulus and gallons capacity per linear foot
Grade | Heat Treatment Type | Normalizing Temperature Range F [C] | Subcritical Annealing or Tempering
Temperature Range F [C] |
P5 (b,c) | Full or Isothermal Anneal | ||
Normalize and Temper | ***** | 1250 [675] | |
Subcritical Anneal (P5c only) | ***** | 1325 – 1375 [715 – 745] | |
P9 | Full or Isothermal Anneal | ||
Normalize and Temper | ***** | 1250 [675] | |
P11 | Full or Isothermal Anneal | ||
Normalize and Temper | ***** | 1200 [650] | |
P22 | Full or Isothermal Anneal | ||
Normalize and Temper | ***** | 1250 [675] | |
P91 | Normalize and Temper | 1900-1975 [1040 – 1080] | 1350-1470 [730 – 800] |
Quench and Temper | 1900-1975 [1040 – 1080] | 1350-1470 [730 – 800] |
Types Of Alloy steel P11 Seamless Pipes :
Alloy Steel P11 Seamless Pipes | P11 Alloy Steel A335 Pipe |
ASTM A335 grade P11 Seamless Pipes | ASTM A335 P11 Alloy Steel Seamless Pipe |
High Pressure P11 Boiler Pipe | ASME SA335 P11 Alloy Steel Rectangular Pipe |
Alloy Steel P11 Seamless Pipes | Alloy Steel Gr P11 Heater Pipe |
ASME SA335 Alloy Steel P11 Seamless Pipe | IBR Alloy Steel P11 Seamless Pipes |
Alloy Steel P11 Custom Pipes | ASME SA / ASTM A335 P11 Seamless Pipes |
Alloy Steel Grade P11 Round Pipe | ASME SA335 P11 Seamless Pipes Suppliers |
Alloy A335 P11 Seamless Square Pipe | ASME SA335 P11 Alloy Steel Seamless Pipe |
AISI P11 ERW Pipe | ASTM A335 P11 Seamless Pipes |
ASTM A335 P11 Boiler Pipe | Tubo A335 P11 Pipe |
ASME SA335 P11 Seamless Alloy Pipe | ASME SA335 P11 Seamless Pipes |
ASME SA335 P11 Material | ASME SA335 Grade P11 Pipe |
ASME SA335 Grade P11 Pipe | ASME SA335 Gr P11 Pipe |
ASME SA335 P11 Thermal Conductivity | Astm A335 Grade P11 Pipe |
ASME SA335 Gr P11 Pipe | ASME SA335 P11 Material |
Astm A335 Gr P11 Pipe | ASME SA335 P11 Pipe |
Astm A335 P11 Pipe | ASME SA335 P11 Piping |
ASME SA335 P11 Pipe | ASTM A335 P11 Steel |
Astm A335 P11 Pipe | ASTM A335 P11 Pipe Material |
ASTM A335 P11 Piping | ASTM A335 P11 Seamless Pipes |
Certifications & Quality Assurance
Mill Test Certificates (MTC)
ISO & Regulatory Certifications
We maintain globally recognized certifications to validate our commitment to quality, safety and environmental standards:
- ISO 9001 – Quality Management System
- ISO 14001 – Environmental Management
- ISO 45001 – Occupational Health & Safety
- PED 2014/68/EU – Pressure Equipment Directive
- IBR – Indian Boiler Regulation compliance
Third-Party Inspection (TPI)
- On request, we arrange third-party inspections by reputed international agencies including:
- Bureau Veritas (BV)
- TÜV Rheinland
- SGS
- DNV
- Lloyd’s Register
Applications & Industries Served
Common Applications:
- Heat Exchangers – Efficient heat transfer in high temperature systems
- Boiler Tubes – Designed for high-pressure steam and thermal cycles
- Power Plants – Used in superheaters, reheaters and economizers
- Refineries & Petrochemical Plants – Handles high-temperature fluids and gases
Product Availability & Delivery
In-Stock Availability:
- Sizes: ½” NB to 24” NB
- Thickness: SCH 20 to SCH XXS
- Lengths: SRL, DRL & Custom
MOQ
- Flexible — small to bulk orders accepted.
Customizations
- Cut-to-length, bending, beveling, coatings, markings, and third-party inspection on request.
What’s the Price of Alloy Steel P11 Seamless Pipes Per KG in India?
- Pipe Size and Wall Thickness
- Length Requirements (Random or Cut-to-Length)
- Surface Finish and End Preparation
- Order Quantity (Small Batch or Bulk Purchase)
- Applicable Standards (e.g., IBR, NACE, PED)
- Delivery Location and Logistics
Why Choose Lakshya Steel for Alloy Steel P11 Seamless Pipes?
Here’s why engineers, procurement heads, and EPC contractors trust us:
- 25+ Years of Expertise: Trusted supplier for high-performance alloy steel pipes.
- Strict Quality Control: In-house testing ensures ASTM A335 P11 compliance.
- Certified & Approved: ISO 9001, PED, IBR, EN 10204 3.1/3.2 — plus third-party inspection.
- Global Supply: Fast, flexible delivery across Asia, Europe, Middle East & USA.
- Custom Solutions: Cut-to-size, beveling, stenciling & more — tailored to your specs.
FAQ’s Of Alloy Steel P11 Seamless Pipes
What is P11 alloy steel?
What is the price of P11 alloy steel?
What is the difference between P11 and P22 material?
What is P22 material grade?
Is P11 material magnetic?
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