Alloy Steel P1 Seamless Pipes
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ASTM A335 Gr P1 Alloy Steel Seamless Pipe

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Alloy Steel P1 Seamless Pipes – Supplier & Manufacturer in India | Lakshya Steel

Providing precise-engineered piping solutions for high-temperature and high-pressure uses, Lakshya Steel is a reputable Alloy Steel P1 Seamless Pipes manufacturer and supplier based in India. Made in conformity with ASTM A335 Grade P1 criteria, our seamless pipes are created from exceptional-grade alloy steel, guaranteeing outstanding mechanical strength, corrosion resistance, and thermal stability.

Having decades of metallurgical experience and a great dedication to quality, we provide Alloy Steel P1 Seamless Pipes extensively utilized in petrochemical units, power plants, refineries, and industrial process systems. Our products satisfy strict industrial standards and provide long-lasting performance whether your needs are for boiler tubes, heat exchangers, or pressure pipe systems.

Leading Alloy Steel Seamless Pipes supplier in India, Lakshya Steel offers reasonable price, timely delivery, and tailored solutions to satisfy a range of needs of worldwide customers. Supported by third-party inspections and ISO-certified manufacturing techniques, we guarantee every product offers constant quality, dependability, and conformity with global standards.

Product Specifications – Alloy Steel P1 Seamless Pipes

Leading producer and supplier of Alloy Steel P1 Seamless Pipes, designed for maximum performance in high-temperature and high-pressure uses, Lakshya Steel Made to ASTM A335 Grade P1 requirements, these pipes find extensive use in boiler, superheater, heat exchanger, and petrochemical systems.

The following comprehensive list of the main product features satisfies the important needs of engineers and procurement experts:

Alloy Steel P1 Seamless Pipes – Technical Specifications

Specification Details
Product Name Alloy Steel P1 Seamless Pipes
Manufacturing Standard ASTM A335 / ASME SA335
Grade P1
Type Seamless
Size Range 1/2” NB to 24” NB
Wall Thickness (Schedule) SCH 20 to SCH XXS / Custom as per request
Outer Diameter 21.3 mm – 610 mm
Length Options Single Random, Double Random, Cut-to-Length
End Finish Plain Ends (PE), Beveled Ends (BE), Threaded Ends (TE)
Form Available Round Pipes, U-Bend, Straight, Hydraulic
Surface Finish Black Painted, Bare, Anti-rust Coated, Oiled
Manufacturing Process Hot Finished / Cold Drawn
Heat Treatment Annealed / Normalized / Normalized and Tempered
Marking & Identification Pipe Grade, Heat Number, Size, Manufacturer Logo, Custom Marking Available
Testing & Inspection Hydro Test, Ultrasonic Test, PMI, Eddy Current, Visual & Dimensional Checks
Following worldwide quality and safety criteria, including NACE, IBR, PED, and CE marking upon request, all pipes are supplied with traceable mill test certificates in line with EN 10204 3.1 or 3.2.

Material Details – Alloy Steel P1 Seamless Pipes

Designed to resist high pressure and elevated temperatures, alloy steel P1 Seamless Pipes—per ASTM A335 Grade P1—chromium-molybdenum alloy steel pipes Because of their exceptional strength, thermal stability, and corrosion resistance, these pipes find great use in essential applications ranging across power plants, oil and gas, and heat exchanger industries.

Chemical Composition – ASTM A335 P1

Chromium and molybdenum improve oxidation tolerance, creep strength, and general durability. The typical chemical makeup is shown below:

Element Minimum (%) Maximum (%)
Carbon (C) 0.10 0.20
Manganese (Mn) 0.30 0.80
Phosphorus (P) – 0.025
Sulfur (S) – 0.025
Silicon (Si) 0.10 0.50
Chromium (Cr) – –
Molybdenum (Mo) – –
Grade P1 is perfect for pressure vessels and heat exchanger systems since these components help to improve creep resistance, high-temperature strength, and oxidation resistance.

Mechanical Properties – ASTM A335 Gr P1

ASTM A335 P1 pipes are manufactured to meet strict mechanical property requirements. Here’s a breakdown:
Property Value
Tensile Strength ≥ 380 MPa
Yield Strength (0.2% Offset) ≥ 205 MPa
Elongation (%) ≥ 30%
Hardness (Brinell) ≤ 163 HBW
Impact Toughness As per application requirements
These mechanical properties ensure the pipe’s durability under cyclic loading, pressure fluctuations, and prolonged high-temperature exposure.

Why It Matters:

Engineering experts choosing Alloy Steel P1 are looking for best performance, lifetime, and safety in thermally demanding conditions. Lakshya Steel guarantees rigorous material control and heat treatment techniques to provide every batch consistent, proven performance.

Equivalent Grades Of Alloy Steel P1 ERW Pipes :

ASTM ASME JIS G 3458 UNS BS DIN ISO ABS NK
A335 P1 SA335 P1 STPA 12 K11597 – 17175

15Mo3

 2604 II TS26 ABS 6 KSTPA 12
17177

15Mo3

 2604 III TW26

Outside Diameter & Tolerance of Alloy Steel P1 Seamless Pipes :

ASTM A450 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
ASTM A530 & ASTM A335 NPS Outside Diameter, inch Tolerance, mm
1/8≤OD≤1-1/2 ±0.40
1-1/2＜OD≤4 ±0.79
4＜OD≤8 +1.59/-0.79
8＜OD≤12 +2.38/-0.79
OD>12 ±1%

ASME SA335 P1 Pipe Wall Thickness :

ASTM A450 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 A530 NPS Outside Diameter, inch Tolerance, %
1/8≤OD≤2-1/2 +20.0/-12.5
3≤OD≤18, WT/OD≤5% +22.5/-12.5
3≤OD≤18, WT/OD>5% +15.0/-12.5
OD≥20, WT/OD≤5% +22.5/-12.5
OD≥20, WT/OD>5% +15.0/-12.5

ASTM A335 P1 Alloy Steel Pipe Diameter :

ASTM A450 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
ASTM A530 & ASTM A335 NPS Outside Diameter, inch Tolerance, mm
1/8≤OD≤1-1/2 ±0.40
1-1/2＜OD≤4 ±0.79
4＜OD≤8 +1.59/-0.79
8＜OD≤12 +2.38/-0.79
OD>12 ±1%

Sa335 Grade P1 Pipe Standard Weight Chart :

ASTM A335 P1 Pipe Size NPS Pipe O.D. Wall Thickness Pipe I.D. Weight per Foot
1/2 0.84 0.109 0.622 0.85
0.147 0.546 1.09
0.188 0.464 1.31
0.294 0.252 1.72
3/4 1.05 0.113 0.824 1.13
0.154 0.742 1.48
0.219 0.612 1.95
0.308 0.434 2.44
1 1.315 0.133 1.049 1.68
0.179 0.957 2.17
0.250 0.815 2.85
0.358 0.599 3.66
1 1/4 1.66 0.140 1.380 2.27
0.191 1.278 3.00
0.250 1.160 3.77
0.382 0.896 5.22
1 1/2 1.90 0.145 1.610 2.72
0.200 1.500 3.63
0.281 1.338 4.86
0.400 1.100 6.41
2 2.375 0.109 2.157 2.64
0.154 2.067 3.66
0.218 1.939 5.03
0.250 1.875 5.68
0.281 1.813 6.29
0.344 1.687 7.47
0.436 1.503 9.04
2 1/2 2.875 0.120 2.635 3.53
0.203 2.469 5.80
0.216 2.443 6.14
0.250 2.375 7.02
0.276 2.323 7.67
0.375 2.125 10.02
0.552 1.771 13.71

A335 P1 boiler Tube Chemical Composition Comparison

Grade UNS C≤ Mn P≤ S≤ Si≤ Cr Mo
P1 K11522 0.10~0.20 0.30~0.80 0.025 0.025 0.10~0.50 – 0.44~0.65
P2 K11547 0.10~0.20 0.30~0.61 0.025 0.025 0.10~0.30 0.50~0.81 0.44~0.65
P5 K41545 0.15 0.30~0.60 0.025 0.025 0.50 4.00~6.00 0.44~0.65
P5b K51545 0.15 0.30~0.60 0.025 0.025 1.00~2.00 4.00~6.00 0.44~0.65
P5c K41245 0.12 0.30~0.60 0.025 0.025 0.50 4.00~6.00 0.44~0.65
P9 S50400 0.15 0.30~0.60 0.025 0.025 0.50~1.00 8.00~10.00 0.44~0.65
P11 K11597 0.05~0.15 0.30~0.61 0.025 0.025 0.50~1.00 1.00~1.50 0.44~0.65
P12 K11562 0.05~0.15 0.30~0.60 0.025 0.025 0.50 0.80~1.25 0.44~0.65
P15 K11578 0.05~0.15 0.30~0.60 0.025 0.025 1.15~1.65 – 0.44~0.65
P21 K31545 0.05~0.15 0.30~0.60 0.025 0.025 0.50 2.65~3.35 0.80~1.60
P22 K21590 0.05~0.15 0.30~0.60 0.025 0.025 0.50 1.90~2.60 0.87~1.13
P91 K91560 0.08~0.12 0.30~0.60 0.020 0.010 0.20~0.50 8.00~9.50 0.85~1.05
P92 K92460 0.07~0.13 0.30~0.60 0.020 0.010 0.50 8.50~9.50 0.30~0.60

Types of Alloy steel P1 Seamless Pipes :

  • Alloy Steel P1 Seamless Pipe
  • Alloy Steel P1 Seamless Pipe
  • P1 Alloy Steel Seamless Pipe
  • UNS K11522 Seamless Pipe
  • ASTM A335 P1 Alloy Seamless Pipes
  • Alloy Steel P1 Round Pipe
  • P1 Alloy Steel Round Pipe
  • P1 Alloy Steel Round Pipe
  • UNS K11522 Round Pipe
  • Alloy Steel UNS K11522 Round Pipe
  • ASTM A335 P1 Alloy Steel Round Pipes

Certifications & Quality Assurance

At Lakshya Steel, we know that in high-stakes sectors including oil and gas, petrochemicals, and power generation, quality and compliance are not only preferences but also absolutely necessary criteria. For this reason, each Alloy Steel P1 Seamless Pipe we provide is supported by strict quality control procedures, global certifications, and outside validation.

Mill Test Certificates (MTCs)

For every pipe, we offer EN 10204 Type 3.1 and 3.2 MTCs guaranteeing complete traceability and material property verification. These credentials cover:
  • Chemical composition analysis
  • Mechanical property test results
  • Heat treatment and dimensional checks
  • Visual and non-destructive testing (NDT) reports

International Certifications

All our manufacturing partners and processes are aligned with globally recognized standards. Our products conform to:
  • ISO 9001:2015 – Quality Management Systems
  • ISO 14001:2015 – Environmental Management Systems
  • ISO 45001:2018 – Occupational Health & Safety
  • PED 2014/68/EU – Pressure Equipment Directive
  • IBR Certified – Indian Boiler Regulation (for boiler-grade pipes)
  • NACE MR0175 / ISO 15156 – Compliance for sour service (when applicable)

Third-Party Inspections (TPI)

We welcome and coordinate with leading third-party inspection agencies for pre-dispatch inspection, material verification, and compliance checks:
  • TÜV Rheinland
  • SGS
  • BV (Bureau Veritas)
  • DNV GL
  • Lloyd’s Register (LR)
TPI ensures that each batch of Alloy Steel P1 Seamless Pipes meets project-specific and contractual specifications — eliminating quality risks and securing peace of mind for procurement teams.

In-House Testing Capabilities

Our quality assurance team conducts comprehensive testing at every stage, including:
  • Hydrostatic Testing
  • Ultrasonic Examination
  • Eddy Current Testing
  • Tensile & Hardness Tests
  • Impact (Charpy) Testing
  • Flattening & Bending Tests
Each pipe undergoes dimensional, visual, and non-destructive testing (NDT) to ensure flawless performance in demanding environments.

Documentation Package Provided

With every dispatch, we provide a full QA/QC documentation set, including:
  • Material Test Certificates (EN 10204 3.1/3.2)
  • Heat treatment charts
  • Dimensional inspection reports
  • Compliance certificates (NACE, PED, IBR, etc.)
  • TPI approval reports (if applicable)

Applications of Alloy Steel P1 Seamless Pipes

Providing dependable piping solutions to important industries all throughout India and abroad, Lakshya Steel is a reputed supplier and manufacturer of Alloy Steel P1 Seamless Pipes. Often found in high-pressure and high-temperature applications, our P1 pipes are engineered for durability, corrosion resistance, and high-temperature performance.

The following is a summary of the main uses and sectors where Alloy Steel P1 Seamless Pipes show unparalleled excellence:

Key Applications of Alloy Steel P1 Seamless Pipes

Application Functionality
Boilers & Superheaters Ideal for conveying high-temperature steam under extreme pressure, ensuring thermal efficiency and system safety.
Heat Exchangers Used in shell-and-tube configurations for transferring heat in oil refineries, power plants, and chemical processing units.
Power Generation Systems Integral to fossil fuel and nuclear power plants for piping systems exposed to superheated steam and corrosive environments.
Petrochemical & Refineries Handles aggressive media and fluctuating pressure/temperature cycles in cracking units and reformers.
Oil & Gas Transmission Suitable for upstream, midstream, and downstream operations, particularly in environments where sour gas is present.
Piping for Pressure Vessels Provides strength and reliability in ASME pressure vessels and coded piping systems.
Seamless Pipe Fabrication Projects Used in engineering projects demanding high-strength, long-lasting seamless pipe systems.
Whether building a chemical process plant or a high-pressure boiler system, Lakshya Steel’s Alloy Steel P1 Seamless Pipes provide the dependability and performance required to satisfy important application needs.

Product Availability & Delivery

At Lakshya Steel, we realise that project success depends on timely delivery. Being a reliable Alloy Steel P1 Seamless Pipes Supplier & Manufacturer in India, we keep a strong inventory and a very responsive supply chain to satisfy the various needs of our domestic and international customers.

Supported by precision manufacturing and rigorous quality control, we guarantee seamless availability, dependable delivery times, and flexible order handling whether your needs are for standard sizes or custom-engineered solutions.

In-Stock Availability

To fulfill immediate project needs, we keep a large variety of Alloy Steel P1 Seamless Pipes in different sizes, wall thicknesses, and lengths. Popular dimensions include:

  • Outer Diameter: 1/4” to 24” (6mm to 610mm)
  • Wall Thickness: SCH 40 to SCH 160 / XXS
  • Length: Single Random (SRL), Double Random (DRL), or Custom Cut-to-Length

Our warehouse and logistics infrastructure ensure that most standard sizes are ready for immediate dispatch.

Minimum Order Quantity (MOQ)

We support both small-scale and bulk procurement:

  • Small Orders: Ideal for R&D, prototypes, or minor repairs
  • Bulk Orders: For large infrastructure or industrial supply contracts

Our MOQ policy is flexible and client-centric, allowing startups and large corporations alike to benefit from our expertise.

Delivery Timelines

We pride ourselves on quick turnarounds and efficient logistics:

  • Domestic Shipping (India): 3–7 working days depending on location and order volume
  • International Shipping: 2–4 weeks depending on destination, shipping mode (air/sea), and custom clearances

Urgent delivery options such as express air freight are available upon request.

Customization Options

We offer value-added services to align our pipes with your exact project specifications:

  • Cut-to-Length Services
  • Surface Coating (Black Painted, Varnished, Galvanized)
  • Pipe Bending & Bevelling
  • Marking & Packaging as per customer instructions or international standards
  • Custom End Finishing (Plain End, Beveled End, Threaded End)

Selecting Lakshya Steel guarantees not only high-quality goods but also consistent delivery and support system that maintains the seamless operation of your supply network. Whether your needs include EPC projects, industrial installations, or planned closures, we are ready, every time.

What Is The Price of Alloy Steel P1 Seamless Pipe Per KG In India?

The price of Alloy Steel P1 Seamless Pipe per KG in India typically ranges between ₹110 to ₹180 per kilogram, depending on several key factors:

 

Key Factors Influencing the Price:

  • Raw Material Costs: Prices fluctuate based on the global cost of alloying elements like Chromium and Molybdenum.
  • Pipe Size & Thickness: Larger diameters and thicker walls require more material and processing.
  • Standards & Specifications: Pipes meeting ASTM A335 Grade P1 standards or requiring special certifications (IBR, NACE, PED) may be priced higher.
  • Surface Finish & End Prep: Customized coatings (e.g., black paint, galvanizing) or special end finishes like beveled or threaded ends can impact cost.
  • Quantity Ordered: Bulk orders receive volume-based discounts, while smaller orders may carry a premium.
  • Logistics & Delivery: Transportation costs, destination location, and urgency of delivery (express or standard shipping) play a role.

Average Price Range (Ex-Stock India):

Pipe Size (OD) Wall Thickness Estimated Price/KG (INR)
1/2″ – 1″ SCH 40 ₹120 – ₹135
2″ – 4″ SCH 80 ₹130 – ₹145
6″ – 12″ SCH 80/160 ₹140 – ₹160

Why Choose Lakshya Steel For Alloy Steel P1 Seamless Pipes

Renowned in the alloy steel sector for providing outstanding quality, technical knowledge, and customer-first service both domestically and internationally, Lakshya Steel is a name you can trust. Engineers, procurement experts, and project managers who often choose us as their chosen Alloy Steel Seamless Pipe supplier have these reasons:

1. Decades of Industry Expertise

With over 20 years of experience, we understand the unique challenges of the steel supply chain. Our deep technical knowledge allows us to recommend the right grades, standards, and solutions based on your application needs.

2. Certified & Compliant Products

All products are supplied with complete Mill Test Certificates (EN 10204 3.1/3.2) and adhere to global standards like ASTM, ASME, DIN, IBR, NACE, and PED. We also support third-party inspections (TPI) from SGS, BV, TUV, and others on request.

3. Robust Inventory & Ready Stock

We maintain a large and ready inventory of Alloy Steel Seamless Pipes in standard sizes and grades like P1, P5, P9, P11, P22, ensuring faster dispatch and reliable supply for urgent project requirements.

4. Customization & Value-Added Services

Need a specific length, surface treatment, or marking? We offer:

  • Cut-to-length services
  • Beveled/Threaded Ends
  • Galvanizing, Coating & Heat Treatment
  • Export Marking & Bundling

5. Competitive Pricing & Transparent Quotes

We offer factory-direct pricing with no hidden costs. Our flexible pricing models and volume-based discounts make us a cost-effective partner for small, medium, and bulk orders.

6. Global Reach & On-Time Delivery

We supply to clients across Asia, Europe, the Middle East, Africa, and North America with fast and secure delivery options. Whether it’s an FOB Indian port or CIF destination delivery, we ensure on-time shipment.

7. Strong Customer Support

From quotation to delivery, our support team ensures clear communication, proactive updates, and post-sales assistance. We’re committed to long-term partnerships, not just transactions.

8. Trusted by Industry Leaders

Lakshya Steel has supplied alloy steel pipes to leading EPC contractors, refineries, thermal plants, petrochemical companies, power generation units, and process industries across the globe.

FAQ’s For Alloy Steel P1 Seamless Pipes

What is P1 pipe material?
P1 pipe material refers to ASTM A335 Grade P1, a ferritic alloy steel pipe designed for high-temperature services. It contains chromium and molybdenum, offering good strength, corrosion resistance, and thermal stability.
What is a seamless steel pipe?
A seamless steel pipe is manufactured without welds or joints, offering superior strength, uniform structure, and pressure resistance. It’s widely used in high-pressure and high-temperature applications in industries like oil, gas, and power.
What is the material equivalent to A335 P1?
ASTM A335 P1 is equivalent to materials like EN 1.5415 (16Mo3) and DIN 15Mo3. These are all chromium-molybdenum alloy steels designed for elevated temperature service in boilers, heat exchangers, and pressure vessels.
What are the grades of alloy steel pipes?
Common grades of alloy steel pipes include P1, P5, P9, P11, P22, and P91 under ASTM A335. Each grade is designed for specific temperature and pressure conditions, offering excellent strength and corrosion resistance.
What are the 3 grades of steel pipe?
The three main grades of steel pipe are carbon steel, alloy steel, and stainless steel. Each has unique properties: carbon for general use, alloy for high temp/pressure, and stainless for corrosion resistance in aggressive environments.
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