ASTM A335 P22 Pipes Manufacturer & Supplier - USA Piping Solution

If you're looking for high-performance ASTM A335 P22 Pipes, you've come to the right place. We operate here in the USA as a leading manufacturer, supplier, and stocking distributor, bringing together 's global resources with local expertise and service. Our focus is squarely on delivering top-quality Seamless Pipes & Tubes, and ASTM A335 Gr P22 is a key part of that offering – a grade specifically designed for the tough demands of high-temperature service. Industries like power generation and petrochemical refining consistently choose these robust Ferritic Alloy Steel Pipes for their reliability. We ensure every pipe adheres to stringent global standards, including ASME SA335, giving you confidence in the materials for your critical projects.

We understand that Alloy Steel Pipes & Tubes aren't just commodities; they are essential components of vital industrial systems. This drives our commitment to the quality of our P22 Seamless Pipes. Produced using advanced seamless manufacturing, these pipes are known for holding their strength when temperatures rise, along with excellent toughness and durability. Whether you need standard sizes shipped quickly from our substantial inventory or face a unique challenge requiring custom dimensions, -USA Piping Solution is set up to help. We provide fully certified, premium ASTM A335 P22 Pipes, backed by solid technical support and efficient worldwide logistics.

What Exactly Are ASTM A335 P22 Pipes?

Let's take a closer look at ASTM A335 P22 Pipes. These operate under the well-established ASTM A335 and ASME SA335 standards, placing them within the Ferritic Alloy Steel Pipes category. A critical feature is their seamless construction – no welds along the length – which makes them inherently strong for handling pressure, especially as temperatures climb.

Grade P22 is perhaps the most widely used chrome-moly alloy for high-temperature work. Why? It strikes an excellent balance. Chemically, it contains about 1.90% to 2.60% Chromium and around 0.87% to 1.13% Molybdenum. This specific blend provides a powerful combination of properties. The chromium is key for resisting oxidation and surface scaling when the pipe gets hot over long periods. It also adds to the material's inherent strength. The molybdenum plays a vital role too, significantly boosting the steel's strength at those high temperatures and, very importantly, improving its resistance to creep. Creep is that slow, gradual deformation that metals can undergo when subjected to stress and heat for extended durations – a major design consideration.

Compared to alloys with less chromium, like P11, P22 offers noticeably better high-temperature strength and significantly better creep resistance. While it might not reach the extreme performance levels of highly specialized alloys like P91, P22 functions very reliably up to temperatures around 580-600°C (roughly 1075-1112°F). This temperature range covers a vast number of demanding industrial processes. Its popularity comes from this great mix of enhanced heat performance, good weldability (using appropriate procedures), and a cost that often makes sense compared to higher alloys. This has made it a standard choice for countless High Temperature Boiler Pipes, critical steam lines, and essential Power Plant Heat Exchanger Pipes. One non-negotiable point: these pipes must always be properly heat-treated (usually annealed or normalized & tempered) to deliver these properties reliably.

ASTM A335 P22 Pipe Specifications: The Technical Details

Getting the specifications right is absolutely essential for safety, proper function, and meeting design codes. -USA Piping Solution ensures that the ASTM A335 P22 Pipes we supply are produced, tested, and certified precisely according to the industry's established standards.

Key Technical Specifications

Specification	Details
The Defining Standards	ASTM A335 / ASME SA335. These North American specifications outline requirements for Seamless Ferritic Alloy-Steel Pipe used in High-Temperature Service.
Alloy ID Code	UNS K21590 – specific designation for Grade P22 in the Unified Numbering System.
How They're Made	Always supplied as Seamless Pipes. Typically produced via hot rolling or extrusion, followed by controlled heat treatments.
Available Sizes (Outer Diameter - OD)	Nominal Pipe Sizes (NPS) from 1/2 inch to 24 inches (21.3mm to 610mm OD). Custom sizes may be sourced on request.
Wall Thickness Range (WT)	Includes all standard Schedule numbers (SCH 40, STD, XS, SCH 80, SCH 120, SCH 160, XXS) and custom wall thicknesses based on engineering requirements.
Standard Lengths	Single Random Lengths (SRL) – 17-24 ft, Double Random Lengths (DRL) – 36-44 ft, and custom cut lengths available (up to 12 meters or more).
End Finish	Standard is Plain End (PE). Beveled Ends (BE) as per ASME B16.25 available on request for easier welding, especially for thicker pipes.

Meeting these specs ensures the P22 Seamless Pipes fit correctly, perform as designed, and comply with all necessary codes and standards for your project.

Material Deep Dive: Chemical Composition & Mechanical Strength

The reliable, long-term performance of ASTM A335 P22 Pipes, especially their ability to handle heat and pressure, comes directly from their specific chemical ingredients and the mechanical characteristics developed through controlled heat treatment.

The Chemical Recipe (Typical Weight %)

Here are the key elements that give P22 its specific properties:

Element	Content (%)	Why It's Important in P22
Carbon (C)	0.05 – 0.15	Provides the basic strength; kept in this range for good weldability characteristics.
Manganese (Mn)	0.30 – 0.60	Contributes to strength and toughness, helps manage sulfur, and aids processing at high temps.
Phosphorus (P)	≤ 0.025	An impurity; limited to ensure the steel remains tough and less prone to embrittlement.
Sulfur (S)	≤ 0.025	Also an impurity; kept low for better toughness and to avoid potential welding difficulties.
Silicon (Si)	≤ 0.50	Primarily used to remove oxygen during steelmaking; offers a minor contribution to strength.
Chromium (Cr)	1.90 – 2.60	This level significantly improves resistance to oxidation and surface scaling at high heat.
Molybdenum (Mo)	0.87 – 1.13	Absolutely vital for boosting strength when hot and providing good resistance to creep.

Important Note: These are the ranges set by the ASTM A335/ASME SA335 standard. The Mill Test Report (MTR) provided with your order confirms the exact chemical analysis of the specific batch of steel used for your pipes.

Key Mechanical Performance Measures (Minimum Room Temperature Values, After Heat Treatment)

These numbers give a baseline indication of the pipe's strength and how it behaves under stress:

Property	Minimum Value	What This Tells You About the Pipe's Behavior
Tensile Strength	415 MPa (60 ksi)	The maximum pulling stress the material can handle before it ultimately fails.
Yield Strength (0.2% offset)	205 MPa (30 ksi)	The stress point where the pipe begins to deform permanently (won't spring back fully).
Elongation	30%	A measure of ductility – how much the pipe can stretch or deform before it fractures.

Heat Treatment: Absolutely Essential: It's crucial to stress this point – achieving these mechanical properties reliably, and especially unlocking the vital high-temperature strength and creep resistance P22 is known for, is completely dependent on the correct heat treatment after the pipe is formed. ASTM A335 P22 Pipes must be heat treated using methods like Full Annealing, Isothermal Annealing, or Normalizing and Tempering. These controlled thermal cycles optimize the internal structure of the steel, refining the grains and ensuring the right combination of strength, toughness, and stability needed for tough, high-temperature service. -USA meticulously ensures all P22 pipes meet these mandatory heat treatment standards.

Supply Forms and Conditions for ASTM A335 P22 Pipes

USA Piping Solution primarily supplies ASTM A335 P22 Pipes in the configurations most commonly needed for building industrial piping systems and related high-temperature equipment.

1. Seamless Straight Lengths:
• This is the standard format for Grade P22. It's the fundamental component for constructing main steam lines, hot reheat systems, large headers, process piping runs, heater tubes, and many other critical parts within high-temperature circuits.
• We offer these pipes in typical random lengths (SRL/DRL). To help streamline your fabrication process, we also provide custom cutting services, delivering pipes cut precisely to the lengths specified on your drawings.
• The seamless construction of these Ferritic Alloy Steel Pipes provides uniform strength all around, which is vital for reliably containing pressure under challenging operating conditions.
2. U-Bend Capabilities (Often for Heat Exchangers):
• While the corresponding T22 tube specification (ASTM A213) is perhaps more frequently cited for heat exchanger U-bends, mainly due to common sizing practices, ASTM A335 P22 Pipes are certainly capable of being formed into U-bends. This route might be chosen for specific exchanger designs that require the larger diameters or heavier wall thicknesses typically found in pipe schedules.
• Creating U-bends involves specialized equipment and precise techniques. Critically, the bent areas almost always need a follow-up heat treatment – often a stress relief cycle, but sometimes a full re-heat treatment – to restore the material's optimal properties and remove internal stresses caused by the bending.
3. Condition as Delivered (Heat Treatment & Surface):
• Required Heat Treatment: As mandated by the ASTM A335 standard, P22 pipes are always supplied in a fully heat-treated condition. Common methods include Full Annealing, Isothermal Annealing, or Normalizing and Tempering. This step is non-negotiable to ensure the pipe has the necessary strength and stability for high-temperature use. The specific method used is always documented on the MTR.
• Surface Appearance: Generally, pipes arrive with a standard mill finish typical of materials that have undergone hot working and subsequent heat treatment. If a project specifies a different surface finish, such as pickling for improved cleanliness, that can usually be accommodated. Temporary protective coatings might also be applied to prevent rust during shipping and storage.

Confirming the required form and verifying the correct heat treatment condition are essential parts of the process when specifying and receiving P22 Seamless Pipes.

Where P22 Fits In: Industries and Common Uses

The effective blend of high-temperature strength, solid creep resistance, and good fabricability has cemented ASTM A335 P22 Pipes as a highly versatile and frequently selected material in several critical industrial sectors facing demanding operating conditions:

1. Power Generation: P22 is a mainstay in this industry.
• Main Steam & Hot Reheat Piping: It's a standard material choice for the crucial, high-pressure piping carrying superheated steam between the boiler, turbine stages, and reheater in many conventional fossil-fueled power plants.
• Boiler Headers & Internals: Widely used for fabricating the thick-walled headers (superheater, reheater sections) and other essential internal boiler piping operating under intense heat and pressure. A fundamental component for High Temperature Boiler Pipes.
• Heat Exchangers: Commonly employed in critical high-pressure feedwater heaters and various other heat transfer units within the power plant's thermal cycle. A trusted choice for Power Plant Heat Exchanger Pipes.
2. Oil Refining & Petrochemical Processing:
• Process Piping Systems: Reliably handles various hot hydrocarbon streams, essential process fluids, and utility lines (like high-pressure steam) throughout the intricate network of a refinery or chemical plant.
• Fired Heater Tubing: Well-suited for tubes used in different zones of large industrial furnaces, capable of withstanding high temperatures and potentially corrosive combustion byproducts.
• Connecting Major Equipment: Used for the robust piping linking reactors, distillation columns, heat exchangers, and other major process vessels operating at elevated temperatures and pressures.
3. Other High-Temperature Industrial Services:
• Finds use in diverse chemical manufacturing processes, specialized industrial heating equipment, and other applications where temperatures push beyond the limits of lower alloys or standard carbon steel, and where P22's specific combination of properties proves advantageous.
• May occasionally be specified for certain high-temperature sections in pharmaceutical or pulp and paper processes.

ASTM A335 Gr P22 has solidified its reputation as a reliable industry standard because it provides a significant performance upgrade over lower alloys like P11, particularly concerning creep strength and maximum reliable operating temperature. At the same time, it remains widely available and is generally considered manageable to fabricate and weld (provided proper procedures are followed). This makes it a well-understood, frequently specified, and trusted solution for a vast range of demanding High Temperature Service Pipes requirements globally.

Guide to ASTM A335 P22 Pipe Sizes

To ensure we can effectively support your project schedules, -USA Piping Solution maintains a substantial inventory covering the most frequently needed sizes of ASTM A335 P22 Pipe. Our typical stock includes:

• Nominal Pipe Size (NPS): Covering the common range from 1/2 inch up through 24 inches.
• Outer Diameter (OD): Correspondingly from 21.3 mm up to 610 mm.
• Wall Thickness Availability: We stock a comprehensive selection of wall thicknesses. This includes all the standard Schedule designations (SCH 40, STD, XS, SCH 80, SCH 120, SCH 160, XXS), plus numerous specific nominal or minimum wall thicknesses often required by engineering codes.

(Note to Design Team: Please insert the size table here. Format it clearly to present representative NPS x Schedule x WT data for ASTM A335 P22 Pipes in an easy-to-understand way.)

NPS (inch)	OD (inch)	OD (mm)	Schedule	Wall Thickness (inch)	Wall Thickness (mm)
3	3.500	88.9	80	0.300	7.62
...	...	...	...	...	...

This table gives a general sense of what's common. Because inventory is always fluid, the surest way to get current availability or discuss sizes not listed (perhaps larger diameters or unusual wall thicknesses) is to connect directly with our sales team at -USA Piping Solution. We have strong capabilities for sourcing the full range of dimensions your project might require.

Our Quality Promise: Certifications and Compliance Assurance

When you specify materials like ASTM A335 P22 Pipes for critical, high-stress, high-temperature applications, complete confidence in their quality and full traceability isn't just preferred—it's mandatory. -USA Piping Solution provides that confidence through unwavering adherence to standards and thorough certification processes.

• Foundational Standards:
• ASTM A335 / ASME SA335 Grade P22: We certify that every pipe strictly complies with all facets of these primary North American specifications – covering chemical composition, mechanical strength requirements, testing protocols, mandatory heat treatment, and dimensional tolerances.
• Our Quality System:
• ISO 9001:2015: Our entire operation, from sourcing through delivery, is managed under an internationally recognized and certified quality management system. This framework ensures consistent processes, reliable product quality, and a culture of continuous improvement.
• Meeting Global Regulations:
• PED (Pressure Equipment Directive) 2014/68/EU: For projects needing compliance for the European Economic Area (requiring CE marking), we are fully capable of supplying P22 pipes certified according to PED guidelines.
• IBR (Indian Boiler Regulations): We regularly supply materials meeting the rigorous requirements of the Indian Boiler Regulations, including providing pipes accompanied by IBR Form III-C certification, often essential for international power and boiler projects.
• The Paper Trail – Mill Test Reports (MTRs):
• EN 10204 3.1: This critical document is provided with every shipment. It serves as the pipe’s definitive record, meticulously detailing its unique heat number, the verified chemical analysis, the actual results obtained from all required mechanical tests (tensile, yield, elongation, hardness), confirmation of the specific heat treatment procedure applied (e.g., Normalized & Tempered), and the results of mandatory pressure testing or NDE. If needed, we can also arrange for EN 10204 3.2 certification, which adds verification by an authorized third-party inspection body.
• Independent Verification – Third-Party Inspection (TPI):
• We routinely work with respected independent inspection agencies (such as Lloyd's Register, Bureau Veritas, DNV, TUV Nord, SGS, ABS, etc.) according to our clients' specific project quality assurance plans or requirements. TPI provides an additional level of objective quality confirmation for the most critical procurements.
• Confirming Performance Through Testing:
• We ensure that all tests mandated by the A335/SA335 standard, as well as the general requirements standard A999/SA999, are successfully performed and properly documented. This typically involves tensile testing, hardness checks, flattening tests, and either hydrostatic pressure testing or suitable Non-Destructive Examination (like Ultrasonic or Eddy Current inspection).

Our rigorous commitment to certification and compliance processes guarantees that the ASTM A335 P22 Pipes you receive from -USA are fully documented, completely traceable, and ready for safe, reliable, long-term service in your most important applications.

Why Choose -USA Piping Solution as Your Supplier?

Selecting the right source for a critical material like ASTM A335 P22 Pipes can significantly influence how smoothly your project runs and its ultimate success. -USA Piping Solution brings several key strengths to your procurement process:

1. Deep US Stock: We maintain a substantial and diverse inventory of P22 Seamless Pipes, along with a broad selection of other Alloy Steel Pipes & Tubes, right here in the United States. This means faster access to materials and quicker deliveries for your North American projects.
2. Global Network, Local Focus: You gain the advantage of 's extensive worldwide sourcing capabilities and deep technical experience, while working directly with our responsive and knowledgeable US-based team. We effectively support projects wherever they may be located.
3. Efficient Logistics Expertise: Our experienced logistics team manages both domestic deliveries and complex international shipments with skill. We ensure your pipes arrive on time, handling all necessary documentation, including potentially challenging export certifications like IBR or PED.
4. Services Beyond Simple Supply: We recognize that fabrication often requires more than just standard pipe lengths. We offer valuable processing services:
• Cutting pipes accurately to the specific lengths needed for your drawings.
• Coordinating specialized testing (like impact testing or PMI verification) if required.
• Providing custom end beveling designed to match your specific welding procedures.
• Arranging for particular surface treatments or protective coatings based on project needs.
5. Navigating Compliance Smoothly: We deal with complex international standards and certification demands regularly. We reliably provide fully documented materials that meet your specific project codes (IBR, PED, etc.), simplifying this often intricate part of procurement.
6. A Name You Can Trust: Leading Engineering, Procurement, and Construction (EPC) firms, major equipment manufacturers (OEMs), and plant operations teams across key industries consistently rely on us due to our track record of quality and dependable delivery.
7. Practical Technical Insight: Our team understands the materials we sell. We know ASTM A335 Gr P22 and related Ferritic Alloy Steel Pipes not just from specs, but from practical application. We offer clear, helpful technical support to help you confirm you're getting exactly what you need.
8. Real Value: By nurturing strong relationships with top global mills and running efficient operations, we deliver premium quality ASTM A335 P22 Pipes at fair, competitive market prices. We focus on providing excellent overall value.

Choosing -USA Piping Solution isn't just buying pipe; it's selecting a partner committed to quality, service, and supporting the success of your critical high-temperature projects.

Exploring Other Options for High-Temperature Service

USA Piping Solution provides a wide array of Alloy Steel Pipes & Tubes. If P22 isn't precisely the grade required, or if you're comparing options, consider these related materials often used in demanding heat applications:

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Choose -USA Piping Solution – the reliable partner you need for the quality Ferritic Alloy Steel Pipes essential to your operations.

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