ASTM A335 P1 Seamless Pipes Manufacturer, Supplier and Exporter in USA
USA Piping Solution is a trusted manufacturer, exporter, and supplier of high-quality ASTM A335 P1 Seamless Pipes that consistently meet both domestic and international quality benchmarks. Also recognized under ASME SA335, these Chrome-Moly seamless ferritic alloy steel pipes are purpose-built for high-temperature service environments. Industries across the board rely on them for their durability, reliability, and long service life and for good reason.
ASTM A335 P1 is a low-carbon alloy steel, with carbon content ranging from 0.05% to 0.15%, enhanced with roughly 1% chromium and molybdenum. This blend gives the pipes their characteristic strength, solid weldability, and resistance to corrosion even under extreme heat. Depending on your project needs, these pipes come in hot-finished or cold-drawn forms, each going through a heat treatment process to bring out the best mechanical performance. They're a go-to choice in oil and gas, boiler systems, chemical processing, and petrochemical plants.
We offer these Chrome-Moly Seamless Pipes in round, square, rectangular, and hydraulic profiles, with your choice of threaded, beveled, or plain ends whatever suits your application best.
What are ASTM A335 P1 Pipes?
ASTM A335 P1 alloy steel is a low-carbon steel typically containing 0.05% to 0.15% carbon. Its base composition includes carbon, manganese, phosphorus, sulfur, and silicon, alloyed with approximately 1% chromium and molybdenum. This combination delivers high strength, excellent weldability, and good corrosion resistance even at elevated temperatures.
The ASTM A335 P1 Pipe exhibits robust mechanical properties, featuring a minimum tensile strength of 415 MPa and a minimum yield strength of 205 MPa, along with a minimum elongation of 30% longitudinal and 20% transverse. Manufacturing can involve cold-drawn or hot-finished methods, followed by a finishing heat treatment such as isothermal annealing or normalizing and tempering.
ASTM A335 Gr. P1 Seamless Pipes are suitable for applications that require high-temperature resistance and are ideal for flanging and bending operations. Thanks to their low carbon content, they also possess excellent welding capacity even at room temperature. These ASTM A335 Alloy Steel Pipes are extensively used across oil and gas, boilers, chemical and petrochemical industries, as well as in high-temperature pipelines and engineering applications.
We supply ASTM A335 Seamless Pipes in a comprehensive range of sizes from 1/8 NB to 26 NB, with wall thicknesses from 3 mm to 12 mm and schedules from Sch 20 to XXS. All dimensions conform to ASME/ANSI B36.10 standards. Available in round, square, rectangular, and hydraulic forms, with threaded, beveled, or plain ends.
ASTM A335 P1 Seamless Pipes Specifications
|
Specification |
Details |
|---|---|
|
Standard |
ASTM A335 / ASME SA335 |
|
Grade |
P1 |
|
Type |
Seamless Ferritic Alloy Steel Pipe |
|
Common Name |
Chrome-Moly Pipe / Low Alloy Steel Pipe |
|
Service |
High-temperature pressure service |
|
UNS Number |
K11820 |
|
Size Range |
1/8 NB to 26 NB |
|
Wall Thickness |
3 mm to 12 mm; Sch 20 through XXS |
|
End Finish |
Plain, Beveled, or Threaded |
|
Forms Available |
Round, Square, Rectangular, Hydraulic |
|
Dimensional Std |
ASME/ANSI B36.10 |
Chemical Composition of ASTM A335 P1 Alloy Steel Seamless Pipes
The table below shows the chemical composition of ASTM A335 P1 alongside all other A335 grades for easy cross-reference.
| Element | P1 |
|---|---|
| Carbon (C) max | 0.20 |
| Manganese (Mn) | 0.30 to 0.80 |
| Phosphorus (P) max | 0.025 |
| Sulfur (S) max | 0.025 |
| Silicon (Si) | 0.10 to 0.50 |
| Chromium (Cr) | Nil |
| Molybdenum (Mo) | 0.44 to 0.65 |
| Vanadium (V) | Nil |
| Niobium (Nb) | Nil |
Mechanical Properties of ASTM A335 Gr. P1 Seamless Pipes
These minimum mechanical values confirm the required strength and ductility for reliable operation under high-temperature and high-pressure conditions.
| Grade | Tensile Strength min | Yield Strength min | Elongation min (Long/Trans) | Hardness max (HBW) |
|---|---|---|---|---|
| P1 | 380 MPa (55 ksi) | 205 MPa (30 ksi) | 30% / 20% | 146 |
Equivalent Grades of ASTM A335 Seamless Pipes
The table below provides cross-references to corresponding international material designations for the ASTM A335 P1 Seamless Pipe.
| ASTM A335 Grade | UNS No. | European Standard EN 10216-2 | Japanese Standard JIS G3458/G3462 |
|---|---|---|---|
| P1 | K11820 | 16Mo3 (1.5415) | STPA12 |
ASTM A335 P1 Chrome Moly Pipes Outside Diameter and Tolerance
| Outside Diameter (OD) | OD Tolerance |
|---|---|
| Up to 48.3 mm | +0.40 / -0.80 mm |
| 60.3 to 114.3 mm | +0.40 / -0.80 mm |
| 139.7 to 273.1 mm | +0.40 / -0.80 mm |
| 323.9 to 508.0 mm | +0.40 / -0.80 mm |
ASTM A335 Seamless Pipes Wall Thickness
| Wall Thickness (WT) | WT Tolerance |
|---|---|
| Up to 2.5 mm | +0.25 / -0.25 mm |
| 2.5 to 5.0 mm | +0.30 / -0.30 mm |
| 5.0 to 10.0 mm | +0.40 / -0.40 mm |
| Greater than 10.0 mm | +0.50 / -0.50 mm |
ASTM A335 P1 Seamless Pipe Price
USA Piping Solution supplies high-quality ASTM A335 P1 Seamless Pipes for projects across the USA and globally. The price list below is indicative. Contact us for a current, project-specific quote.
| Product Description | Price Range | Unit of Measure |
|---|---|---|
| ASTM A335 P1 Seamless Pipes | US $2500 to 4100 | Ton (FOB Price) |
| Seamless Pipe ASTM A335 Alloy Steel P1 | US $20 to 1200 | Ton (FOB Price) |
| Alloy Steel ASTM A335 P1 Seamless Pipe | US $500 to 2000 | Ton (FOB Price) |
| ASTM A335 P1 Alloy Steel High Pressure Pipe | US $850 to 2200 | Metric Ton (FOB Price) |
| SA335 P1 Seamless Pipe | US $1.5 to 9 | Kilogram (FOB Price) |
| ASTM A335 P1 Alloy Seamless Pipe Manufacturer | US $850 to 2200 | Metric Ton (FOB Price) |
| ASTM A335 Gr. P1 Chrome Moly Pipe | US $500 to 1000 | Ton (FOB Price) |
To get an accurate current price quote for your specific requirements, please contact USA Piping Solution directly.
Applications of ASTM A335 P1 Chrome Moly Pipes
- High-temperature service pipelines in oil and gas processing plants
- Industrial boiler systems requiring moderate strength and creep resistance at elevated temperatures
- Chemical and petrochemical processing units where corrosion resistance and durability are critical
- Power generation plants where steam piping must perform reliably under thermal stress
- Refineries and heat exchangers requiring reliable performance across a wide temperature range
- Structural and mechanical applications benefiting from good formability and weldability
Get a Quote for ASTM A335 P1 Seamless Pipes
Looking for ASTM A335 P1 pipes? We offer competitive pricing, ready stock, and timely delivery for projects of any size. Contact our team today and we will provide you with a fast, personalized quote tailored to your exact project needs.
Request a Quote for ASTM A335 P1 Seamless PipesFrequently Asked Questions About ASTM A335 P1 Seamless Pipes
What is the main difference between ASTM A335 P1 and other P-grades?
ASTM A335 P1 is a low-alloy steel with a minimal alloying element count, primarily Chromium and Molybdenum. It is designed for high-temperature services requiring moderate strength and creep resistance. For more aggressive corrosive conditions or extreme high-temperature environments, higher-strength alloys such as P11 or P22 would be the appropriate choice.
Can ASTM A335 P1 pipes be used in high-pressure systems?
Yes. ASTM A335 P1 pipes are manufactured as seamless, meaning there is no welded seam and the wall thickness is uniform throughout. This makes them highly reliable for high-pressure applications including boilers, refineries, and power generation systems.
What certifications and documentation come with an order?
Every ASTM A335 P1 Alloy Steel Seamless Pipe order from USA Piping Solution comes with a Mill Test Certificate (MTC) covering chemical analysis and mechanical properties. Third-party inspection documentation is also available upon request for complete material traceability.
What is the typical lead time for an order of A335 P1 pipes?
We maintain a large stock supply of ASTM A335 P1 pipes and can support urgent project timelines. For custom orders, our logistics team will provide accurate lead times based on the specific size and scope of your requirement.
Are ASTM A335 P1 pipes suitable for welding?
Yes. ASTM A335 P1 is a low-carbon alloy steel with excellent weldability. It is recommended to follow proper welding procedures including preheating and post-weld heat treatment to maintain mechanical properties and prevent cracking. Always consult a qualified welding engineer and adhere to the applicable standards.
