Product Details

ASTM A335 High Strength Steel Tubing: Seamless Ferritic Alloy-Steel Pipe for High-Temperature Service Tube
Introduction
ASTM A335 is a specification standard for seamless ferritic alloy-steel pipe intended for high-temperature service. This specification covers several grades of high-strength steel tubing commonly used in various industrial applications. In this article, we will explore the key features, chemical composition, mechanical properties, steel grades, applications, and possible alternative grades of ASTM A335 steel tubing.
Material Specification
ASTM A335 specifies the requirements for seamless ferritic alloy-steel pipe with specific chemical composition and mechanical properties. The material should be suitable for high-temperature service and exhibit excellent resistance to oxidation, scaling, and corrosion.
Key Features
- High-strength: ASTM A335 tubing offers exceptional strength and toughness, ensuring durability even in extreme conditions.
- High-temperature resistance: The alloyed composition of the steel enables it to withstand elevated temperatures without compromising its structural integrity.
- Corrosion resistance: ASTM A335 steel tubing has excellent resistance to corrosion, making it suitable for applications in highly corrosive environments.
- Seamless construction: The seamless design of these pipes eliminates the risk of leakage, providing a reliable and efficient fluid transportation system.
Chemical Composition (Table Presentation)
Steel Grade | C (Carbon) | Mn (Manganese) | P (Phosphorus) | S (Sulfur) | Si (Silicon) | Cr (Chromium) | Mo (Molybdenum) | Others |
Grade P1 | 0.10-0.20 | 0.30-0.80 | 0.025 | 0.025 | 0.10-0.50 | 0.44-0.65 | - | - |
Grade P2 | 0.10-0.20 | 0.30-0.61 | 0.025 | 0.025 | 0.10-0.30 | 0.50-0.81 | 0.44-0.65 | - |
Grade P5 | 0.15 max | 0.30-0.60 | 0.025 | 0.025 | 0.5 max | 4.00-6.00 | 0.45-0.65 | - |
Grade P9 | 0.15 max | 0.30-0.60 | 0.030 | 0.030 | 0.25-1.00 | 8.00-10.00 | 0.90-1.10 | V: 0.15-0.25, Nb: 0.03-0.07, N: 0.03 max |
Grade P11 | 0.05-0.15 | 0.30-0.60 | 0.025 | 0.025 | 0.50-1.00 | 1.00-1.50 | 0.44-0.65 | - |
Grade P22 | 0.05-0.15 | 0.30-0.60 | 0.025 | 0.025 | 0.50 max | 1.90-2.60 | 0.87-1.13 | - |
Grade P91 | 0.08-0.12 | 0.30-0.60 | 0.020 | 0.010 | 0.20-0.50 | 8.00-9.50 | 0.85-1.05 | V: 0.18-0.25, Nb: 0.06-0.10, N: 0.03-0.07 |
Note: The chemical composition is subject to individual grade requirements outlined in the ASTM A335 specification.
Mechanical Properties (Table Presentation)
Steel Grade | Tensile Strength (Min.) | Yield Strength (Min.) | Elongation (Min.) | Hardness (Max.) |
Grade P1 | 415 MPa | 205 MPa | 30% | 163 HB |
Grade P2 | 415 MPa | 205 MPa | 30% | 163 HB |
Grade P5 | 415 MPa | 205 MPa | 30% | 163 HB |
Grade P9 | 585 MPa | 415 MPa | 20% | 241 HB |
Grade P11 | 415 MPa | 205 MPa | 30% | 163 HB |
Grade P22 | 415 MPa | 205 MPa | 30% | 163 HB |
Grade P91 | 585 MPa | 415 MPa | 20% | 250 HB |
Steel Grade and Application
ASTM A335 steel tubing is available in various grades according to the specific requirements of different applications. Here are some commonly used steel grades with their respective applications:
- Grade P1: Suitable for power plants, refineries, and process piping.
- Grade P2: Ideal for high-pressure steam, boiler, and heat-exchanger service.
- Grade P5: Used in power plants, steam boilers, and petroleum refineries.
- Grade P9: Great for chemical and petrochemical plants, as well as power plants.
- Grade P11: Commonly employed in oil and gas extraction and processing facilities.
- Grade P22: Used in power generation plants, heat exchangers, and petrochemical industries.
- Grade P91: Primarily used for high-temperature applications in power plants and petrochemical refineries.
Possible Alternative Grades
While ASTM A335 steel tubing meets various requirements, there are alternative grades available for specific applications. Some possible alternatives include ASTM A213, ASTM A519, and API 5L. The suitability of these alternatives should be determined based on the specific needs of each application.






Haiyan Sanxin Steel Pipe Factory is a leading manufacturer of steel pipes in China. Located in a region with excellent geographical advantages, the factory is situated close to the Zhoushan Port and Ningbo Port.
Our factory covers an area of more than 25,000 square meters and has been in the steel pipe manufacturing business for 20 years. Over this period, we have accumulated a wealth of professional experience, which has helped us establish ourselves as a trusted name in the industry.
At our factory, we specialize in the production of various types of steel pipes, including stainless steel pipe, carbon steel pipe, copper pipe, steel pipe,seamless steel pipe and welded pipe. Our expertise in this field is evident from the 12 patents that we hold, which demonstrate our commitment to innovation and excellence.




Q: Are you trading company or manufacturer ?
A: manufacturer,also can do trading.
Q: How long is your delivery time?
A: Generally speaking,it is 10-15 days if the goods are in stock,or it is 30-40 days if the goods are not in stock, it is according to quantity.
Q: Do you provide samples? is it free or extra ?
A: Yes, we could offer the sample for free charge but need pay the cost of freight.
Q: What is your terms of payment ?
A: Payment<=2000USD, 100% in advance. Payment>=2000USD, 30% T/T in advance ,balance before shippment.
If you have another question, pls feel free to contact with me.
Company Profile
Who We are ?
TORICH is an enterprise that has been producing precision steel
pipes and steel pipe processing for over 20 years, with a factory
area of approximately 20000 square meters
The main products produced are carbon steel and alloy steel grade
seamless steel pipes, welded precision steel pipes, DOM steel
pipes, seamless and welded stainless steel pipes。And our separate workshop also produce machined cast iron parts and cast steel
parts, as well ad customized precision parts and difficult
precision parts. Our strength is with in our ability to produce
metal parts of higher quality control in an integrated process, from mapping and mould design, to casting, forging, machining, heat treatment, surface treatment, assembly
and testing.
TORICH team is familiar with the quality requirements and process standards of
precision partssteel tubes of leading industrial companies at home and abroad,and management level, and constantly looks for like-minded excellent
suppliers, which enable us to reduce the have a comparative advantage over many of our competitors.
In the field of processing, TORICH has 18 sets 4-axis/3-axis CNC machines and over 30 sets of
CNC lathers. The machining center is capable of machining
1100x600x800mm parts and the CNC lathes are capable of processing
550x1500mm parts. We specialize in machining stainless steel, alloy
steel and other hard metals, as well as carbon steel, aluminium,
and copper, with a dimensional accuracy of 0.01mm.
As of 2023, TORICH has perfectly cooperated with more than 50
countries, including Russia, India, Australia, the United Kingdom, France, the United States,
Canada, Brazil, and Egypt. Quality and reputation are always our
first concerns, with the aim of well serving every customer who
trusts in us. TORICH looks forward to partnering with customers all
over the world.
What products we do?
------- Invent and produce various Precision Steel Pipes
Our steel pipes cover the following ranges:
Seamless Precision Steel Pipes
Welded Precision Steel Pipes, with DOM production
Seamless Heat Exchanger Steel Pipe
Seamless Boiler Steel Pipes
Seamless Structural Steel Pipes
Seamless Mechanical Steel Pipes
Seamless Alloy Steel Tubes & Pipes
Seamless Stainless Steel tubes
Welded Stainless Steel Tubes
Seamless Stainless Steel Tubes & Pipes
Welded Stainless Steel Tubes & Pipes
Seamless Carbon Steel Tubes & Pipes
Nickel Alloy Steel Tubes & Pipes
CNC Stainless Steel Parts
CNC Aluminum Parts
CNC CopperParts
CNC Turning Parts
CNC Milling Parts
Products Application:
Oil Cylinders
Air Cylinder,
Automotive Cylinder Liners
Boilers, Pressure Vessels
Shell & Heat Exchangers
Jack Lifting
Telescopic Systems
Pneumatic Cylinders
Agricultural Machineries