A335 Steel pipe

Gnee A335 steel pipes are available in a variety of grades and sizes, such as grades P1, P5, P11, P22, P91, P9 etc., which are widely used in the power industry, boilers, and nuclear energy fields. We have our own factory and stock large quantities of steel pipes with competitive prices. Contact for a free quote.

ASTM A335 Pipe (ASME S/A335, Chorme-Moly) is a seamless ferritic Alloy-Steel Pipe for high temperature service. Pipe ordered to this specification shall be suitable for bending, flanging (vanstoning), and similar forming operations, and for fusion welding. Sometimes referred to as “P Grade”, chome moly pipe is popular in P-Grades P5, P9, P11, P22, and P91.

DimensionWall thickness: 1mm-120mm
Outside Diameter: 6mm-2400m
Length: 5.8m,6m,11.8m,12m or as you require
  • A335 Grade P1
  • A335 Grade P2
  • A335 Grade P5
  • A335 Grade P9
  • A335 Grade P11
  • A335 Grade P12
  • A335 Grade P91
  • A335 Grade P92

7 days for stock goods/ within 30-50 days / depending on your order quantity

  • Standard export packaging: Bundled with Rope/In Bulk
  • According to customer requirements

Available, welcome to consult

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parameter Of ASTM A335 Steel Pipe

A335 Grade P10.10—0.200.10—0.500.30—0.800.0250.0250.44-0.65 /
A335 Grade P5Max 0.15Max 0.500.30—0.600.0250.0250.45-0.654.00-6.00
A335 Grade P9Max 0.150.25-1.000.30—0.600.0250.0250.90-1.108.00-10.00
A335 Grade P110.05—0.150.5—1.00.30—0.600.0250.0250.45-0.651.00-1.50
A335 Grade P120.05—0.15Max 0.500.30—0.610.0250.0250.45-0.650.80-1.25
A335 Grade P220.05—0.15Max 0.500.30—0.600.0250.0250.87-1.131.90-2.60
A335 Grade P910.08-0.120.20-0.500.30—0.600.0200.0100.85-1.058.00-9.50
A335 Grade P920.07-0.13Max 0.500.30—0.600.0200.0100.30-0.608.50-9.50
Mechanical PropertyP1,P2P12P91P92P122Others
Tensile strength ksi556085909060
Tensile strength mpa380415585620620415
Yield strength ksi303260645830
Yield strength mpa205220415440400205
ASTM A335 GradeHeat Treatment TypeNormalizing Temperature Range F [C]Subcritical Annealing or Tempering 
Temperature Range F [C]
P5 (b,c)Full or Isothermal Anneal  
 Normalize and Temper1250 [675]
 Subcritical Anneal (P5c only)1325 – 1375 [715 – 745]
P9Full or Isothermal Anneal  
 Normalize and Temper1250 [675]
P11Full or Isothermal Anneal  
 Normalize and Temper1200 [650]
P22Full or Isothermal Anneal  
 Normalize and Temper1250 [675]
P91Normalize and Temper1900-1975 [1040 – 1080]1350-1470 [730 – 800]
 Quench and Temper1900-1975 [1040 – 1080]1350-1470 [730 – 800]

ASTM A335 Steel Pipe For Sale

  • Provide precise sizes from small to large, for example, 12mm,14mm,20mm, and more.
  • Provide multiple A335 grades,for example P5,P9,P11,P22 and more.

Gnee offers A335 steel pipes of different grades, such as A335 Grade P5 / A335 Grade P9 / A335 Grade P11 / A335 Grade P91 and more for you to choose.


We Gnee have A335 steel pipes of different sizes, such as 5 inch /6 inch /2 inch and more for you to choose.


Gnee A335 steel pipes is widely used in high-temperature and high-pressure environments, such as boiler pipes, natural gas and oil industries, and nuclear power industries.


Why Choose Gnee ASTM A335 Steel Pipe?

If you want to find a trustworthy A335 alloy steel pipe manufacturer, Gnee will be your best choice. 15 years of experience A335 alloy steel pipe manufacturer, certified by CE, ISO, and ASTM. And we guarantee the highest safety and quality standards.


In addition, our A335 alloy steel pipe has been successfully exported to more than 60 countries such as Vietnam, Malaysia, Indonesia, Pakistan, UAE, and South Korea, etc. Many regular customers visit our company and factory and make multiple orders.

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What Services Does Gnee Provide?

Gnee can provide the following measurement services for ASTM A335 pipe:

1. Dimensional measurement: Measure the dimensional parameters such as length, width, and thickness by measuring instruments to ensure the pipe is qualified and meets the design requirements.
2. Surface measurement: Measure parameters such as flatness, unevenness, and surface roughness of the A335 pipe surface to help ensure that the quality and surface state of the pipe meet the requirements.
3. Thickness measurement: Use a thickness measuring instrument to accurately measure the thickness of the A335 pipe to ensure that it meets the design requirements.
4. Material measurement: Use material analysis instruments to measure the chemical composition and mechanical properties of the product to ensure that the quality and performance meet the requirements.
5. Bending and Deformation Measurements:The degree of bending and deformation of the steel pipe is measured and monitored by using tools such as bending measuring instruments and displacement sensors to ensure that it is within the allowable range.

Ask Measurement service

Gnee can customize the size and shape of steel pipes for your project according to specific project needs. The custom design of the A335 pipe is carried out by a professional engineer and design team. Based on the requirements and constraints of the project, they will use calculation and simulation tools, combined with experience and technical knowledge, to optimize the steel pipe design to meet the specific needs of your engineering.

● According to the strength requirements of structural design, adjust the thickness, width, and length of A335 steel pipes.
● The shape of the steel pipe can be designed according to the characteristics of the project.
● If you consider the convenience of installation and maintenance, we can also add openings and passages for easy access and operation in the design for areas that require frequent maintenance.

Ask Customized Services

Purchasing Gnee A335 steel pipe can provide the following deep processing services. We can customize according to the specific needs of customers to meet the requirements.

Cutting service: A335 steel pipe can be custom cut to obtain the desired shape and size according to the needs of customers. For example, flame cutting, plasma cutting, laser cutting, etc., can cut steel pipes into required blocks, special-shaped parts.
Bending and forming: A335 steel pipes are bent and formed by stress application and appropriate processes to obtain the desired shape.
Welding service: A335 steel pipe can be subjected to various types of welding services, including manual arc welding, gas-shielded welding, laser welding, etc.
Turning and machining of holes: Turning and machining of holes in A335 steel pipes by using machining equipment. These processes produce smooth surfaces, precise holes and threads to meet specific assembly requirements.
Surface treatment: In order to improve the corrosion resistance and aesthetics of the steel pipe, surface treatment can be carried out. This includes methods such as spraying, hot-dip galvanizing, electroplating, etc. to add a protective layer and provide corrosion resistance.

Ask Deep Processing Services

Gnee A335 steel pipe can provide the following testing services through third-party testing agencies. These third-party testing services can provide independent, objective verification that A335 pipes comply with relevant standards and regulations.

Material chemical composition analysis: Through chemical composition analysis, determine whether the composition of the steel pipe meets the standard requirements.
Mechanical performance test: Mechanical performance test includes tensile test, impact test, bending test, etc., which are used to determine whether the mechanical properties such as strength, toughness and ductility of products meet the specified requirements.
Metallographic testing: Through metallographic testing, check the structure, grain size, non-metallic inclusions, etc. of A335 steel pipes to evaluate their quality and performance.
Corrosion performance test: Through the corrosion performance test, evaluate the corrosion resistance of A335 pipes, including salt spray corrosion resistance, chemical corrosion resistance, etc.
Hardness test: Hardness test is used to measure the hardness of A335 steel pipe, and its strength and wear resistance can be evaluated according to the hardness value.
Ultrasonic flaw detection: Ultrasonic flaw detection is used to detect internal defects of pipes, such as cracks, pores, inclusions, etc.

Ask Deep Processing Services

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