ASTM A335 Alloy Steel Pipe for High-Temperature Service
Xurui manufactures ASTM A335 pipes in multiple grades and dimensions for power generation, boiler, refinery, petrochemical, and other industrial piping applications. Supply can be coordinated for required grade, outside diameter, wall thickness, length, heat treatment, inspection, and quality documentation.
ASTM A335 Alloy Steel Pipe Grades
We supply ASTM A335 seamless alloy steel pipes for high-temperature piping systems, covering various grades such
as P1, P5, P9, P11, P22, P91, and P92. Customers can select the appropriate grade based on operating
temperature, pressure, material requirements, and project specifications.
|
Grade |
Typical Alloy System |
Key Material Characteristics |
Typical Application |
|
Mo alloy steel |
Suitable for elevated-temperature service |
High-temperature piping |
|
|
Cr-Mo alloy steel |
High-temperature and oxidation resistance |
Refinery and process piping |
|
|
Cr-Mo alloy steel |
High-temperature strength and oxidation resistance |
Refinery and high-temperature piping |
|
|
Cr-Mo alloy steel |
High-temperature strength and creep resistance |
Boiler, steam, and power piping |
|
|
Cr-Mo alloy steel |
High-temperature strength and long-term service performance |
Power, boiler, and process piping |
|
|
Modified 9Cr-1Mo alloy steel |
High strength for demanding high-temperature service |
Power plant and steam piping |
|
|
Cr-Mo-W alloy steel |
High-temperature strength for demanding service |
High-temperature and high-pressure power piping |
ASTM A335 Alloy Steel Pipe Specifications
We supply ASTM A335 seamless alloy steel pipes in multiple grades and sizes, with specifications coordinated
according to applicable standards and project requirements.
|
|
Parameter |
Specification |
|
Standard |
ASTM A335 / ASME SA335 |
|
|
Product Type |
Seamless Ferritic Alloy Steel Pipe |
|
|
Grades |
P1, P5, P9, P11, P22, P91, P92 |
|
|
Outside Diameter |
10.3 - 1067 mm |
|
|
Wall Thickness |
1 - 150 mm |
|
|
Length |
Customized |
|
|
Heat Treatment |
According to applicable grade requirements |
|
|
Pipe Ends |
Plain End / Beveled End / Threaded, as applicable |
|
|
Surface / Finish |
Pickled, Blasted, As-rolled |
|
|
Delivery Condition |
According to applicable ASTM A335 grade and project requirements |
ASTM A335 Alloy Steel Pipe Grades We Supply
Explore our ASTM A335 seamless alloy steel pipe range. Each grade is available with detailed product specifications
and application information to help buyers identify the suitable pipe for their project requirements.
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![ASTM A335 P92]()
ASTM A335 P92ASTM A335 P92 (ASME SA335 P92) is a martensitic heat-resistant steel, specifically a 9% chromium-0.5% molybdenum-1.8% tungsten-vanadium-niobium alloy steel. It falls under the 9% chromium-0.5%...
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![ASTM A335 P91]()
ASTM A335 P91ASTM A335 P91 (ASME SA335 P91) is a martensitic heat-resistant steel, specifically a 9% chromium-1% molybdenum-vanadium-niobium alloy steel. It is a V-Nb strengthened alloy grade within the 9%...
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![ASTM A335 P22]()
ASTM A335 P22ASTM A335 P22 (ASME SA335 P22) is a low-alloy chromium-molybdenum steel (Cr-Mo steel), which is a 2.25% chromium-1% molybdenum alloy grade under the ASTM A335/ASME SA335 standard. Its typical...
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![ASTM A335 P11]()
ASTM A335 P11ASTM A335 P11 (ASME SA335 P11) is a low-alloy chromium-molybdenum steel (Cr-Mo steel), which is a 1.25% chromium-0.5% molybdenum alloy grade under the ASTM A335/ASME SA335 standard. Its typical...
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![ASTM A335 P9]()
ASTM A335 P9ASTM A335 P9 (ASME SA335 P9) is a medium-to-high alloy chromium-molybdenum steel (Cr-Mo steel), belonging to the 9% chromium-1% molybdenum alloy grade under the ASTM A335/ASME SA335 standard. Its...
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![ASTM A335 P5]()
ASTM A335 P5ASTM A335 P5 (ASME SA335 P5) is an intermediate alloy chromium-molybdenum steel (Cr-Mo steel), a 5% chromium - 0.5% molybdenum alloy grade under the ASTM A335/ASME SA335 standard. Its typical...
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![ASTM A335 P1]()
ASTM A335 P1ASTM A335 P1 (ASME SA335 P1) is a low-alloy chromium-molybdenum steel (Cr-Mo steel), which is the grade with the lowest alloy content among chromium-molybdenum alloys in the ASTM A335/ASME SA335...
Applications of ASTM A335 Alloy Steel Pipe
ASTM A335 alloy steel pipes are used in high-temperature and pressure piping systems where controlled material
properties and reliable performance are required. We supply A335 pipes for power generation, petrochemical,
refining, and other industrial applications according to specified grades and project requirements.
Power Plant Piping
Used in thermal power generation systems where piping carries high-temperature steam between boilers, turbines, and associated equipment.
Typical Uses:
Main steam lines · Hot reheat lines · Cold reheat lines · Boiler outlet piping
Boiler & Heat Recovery Systems
Used as piping components within boiler and heat recovery equipment, where controlled alloy composition and heat treatment are required for elevated-temperature operation.
Typical Uses:
Superheater piping · Reheater piping · Boiler circulation lines · HRSG piping
Refinery & Petrochemical Plants
Used in selected refinery and petrochemical units where process fluids or steam are handled at elevated temperatures and the specified material grade is required by the project.
Typical Uses:
Furnace piping · Hydroprocessing units · Process heater systems · High-temperature unit piping
Chemical & Process Plants
Used in process facilities for service lines connected with heating, steam, and other elevated-temperature operations where specific alloy steel grades are specified by the engineering design.
Typical Uses:
Heated process lines · Steam distribution · Reactor-related piping · Process utility lines
Plant Construction & Maintenance
Supplied for new plant construction, system expansion, piping replacement, and maintenance projects requiring ASTM A335 material to match existing specifications or approved project documents.
Typical Uses:
New piping installation · Replacement piping · Plant upgrades · Maintenance projects
ASTM A335 Alloy Steel Pipe Manufacturing
We strictly control the manufacturing process for ASTM A335 alloy steel pipes, covering the entire workflow—from
raw material verification and seamless pipe production to heat treatment, dimensional
processing, inspection, marking, and final packaging.
Steel Billet Inspection & Preparation
We verify the billet grade, chemical composition, and heat number before production to confirm that the material matches the specified ASTM A335 grade.
Heating & Piercing
We heat the steel billets to the required processing temperature and pierce them to form hollow tube shells, thereby establishing the seamless structure necessary for producing ASTM A335 steel pipes.
Rolling & Sizing
We roll and size the hollow tube blanks to achieve the specified outside diameter and wall thickness, maintaining dimensional control throughout the process.
Heat Treatment
We perform heat treatment on the steel pipes according to ASTM A335 requirements, controlling temperature and cooling rate to achieve the specified material properties and ensure reliable operation under high-temperature conditions.
Straightening & Finishing
After heat treatment, we straighten and finish the steel pipes to meet the specified dimensional tolerances and pipe end requirements. Surface conditions and pipe ends are inspected prior to final inspection.
Final Inspection
Before shipment, our finished pipes undergo a series of dimensional and visual inspections. Product identification details and relevant inspection records are retained to ensure material traceability and facilitate order verification.
ASTM A335 Alloy Steel Pipe Testing & Inspection
We perform inspection and testing according to ASTM A335 requirements and applicable project specifications to
verify material composition, mechanical properties, dimensions, and product integrity before shipment.
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Chemical CompositionWe verify the alloying elements and chemical composition against the specified ASTM A335 grades.
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Tensile & Hardness TestingWe conduct tensile and hardness tests on the pipes to verify their mechanical properties, including tensile strength, yield strength, elongation, and hardness values.
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Hydrostatic TestingWe perform hydrostatic testing on each pipe length as required by ASTM A335 and applicable project specifications.
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Dimensional InspectionWe inspect the finished pipes for outside diameter, wall thickness, length, straightness, and other specified dimensions.
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Non-Destructive TestingWe perform applicable non-destructive examination methods, such as ultrasonic testing, according to ASTM A335 requirements and project specifications.
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Visual & Surface InspectionWe inspect pipe surfaces, ends, markings, and visible surface conditions before shipment.
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Heat Treatment VerificationWe verify heat treatment records and results to ensure compliance with specified ASTM A335 grade requirements and project specifications.
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Marking & TraceabilityWe will retain pipe heat numbers, grade designations, inspection records, and product markings to support material traceability.
ASTM A335 Alloy Steel Pipe Packaging & Delivery
We prepare ASTM A335 seamless alloy steel pipes for secure handling, storage, loading, and international
transportation, with packaging and identification coordinated according to order requirements.
Protective Packaging
We bundle and secure the pipes based on their size and quantity, and implement appropriate protective measures for the ends and exterior surfaces where necessary.
Product Marking
Each bundle or pipe can be marked with the applicable grade, size, heat number, quantity, and other identification details required for order verification and traceability.
Loading & Transport
We load the pipes into containers or onto trucks and secure them to prevent shifting during transit, thereby ensuring their safe arrival at the designated destination.
Delivery Documentation
We prepare shipping and quality documentation in accordance with order and project requirements to facilitate customs clearance, material verification, and delivery.
Related Pipe Solutions
In addition to ASTM A335 alloy steel pipes, we also supply API 5L line pipe and ASTM carbon steel pipe to meet
the application requirements of various industrial piping and engineering projects.
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API 5L Line Pipe
Designed for pipeline transportation applications, API 5L line pipe is used for the conveyance of oil, natural gas, and other fluids. It is available in applicable grades and specifications for pipeline construction and related energy projects.
ASTM Carbon Steel Pipe
ASTM carbon steel pipe is supplied for general industrial piping, structural, water, steam, and other applications where carbon steel is specified according to the project requirements.
FAQ
Q: Can you provide ASTM A335 pipe with MTC and traceability?
A: Yes. Applicable Material Test Certificates (MTCs), heat numbers, inspection records, product markings, and other quality documentation can be provided according to order and project requirements.
Q: Can ASTM A335 alloy steel pipe be supplied according to project specifications?
A: Yes. We manufacture to ASTM A335 / ASME SA335 and can customize grade (P5, P9, P11, P22, P91, P92), OD, wall thickness, length, heat treatment (normalizing, quenching + tempering), pipe ends (BE/PE/threaded), NDT, marking, and documentation per approved project specs.
Q: What affects the price of ASTM A335 alloy steel pipe?
A: Key price factors include alloy grade (Cr-Mo content), OD, wall thickness, quantity, heat treatment cycle (normalizing vs. Q+T), NDT level, documentation requirements, and delivery terms. Higher grades such as P91/P92 require stricter chemistry control and heat treatment, which significantly affects cost. We provide project-specific quotations based on your exact specification.
Q: Do you supply ASTM A335 alloy steel pipe in bulk quantities?
A: Yes. We support both project-based and bulk orders. Our production capacity covers a wide range of sizes, from small-diameter tubes to large-diameter heavy-wall pipes. MOQ is typically 1 ton, but we can accommodate smaller trial orders for special grades. Delivery schedule depends on grade and quantity.
Q: Can ASTM A335 pipe be purchased directly from the manufacturer?
A: Yes. We are a direct manufacturer of ASTM A335 seamless alloy steel pipes, supplying industrial projects, EPC contractors, equipment manufacturers, and distributors. Factory-direct supply means competitive pricing, faster lead times, and direct technical support from our engineering team.
With abundant experience, we are one of the most professional astm a335 alloy steel pipe manufacturers and suppliers in China. We are committed to providing high quality metal products for global clients. Please feel free to wholesale bulk high-grade astm a335 alloy steel pipe in stock here from our factory.
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