ASTM A335 P22 pipe is a high-temperature ferritic steel with 2.25% Cr and 1% Mo, as defined in the ASTM A335 standard for alloy seamless pipes. It has good high-temperature, corrosion, and pressure resistance. It also has good processing and welding properties and high thermal strength. When the temperature is less than or equal to 580°C, its creep rupture strength and allowable stress even exceed those of 9Cr – Mo steel. It is primarily used in the manufacturing of high-temperature and high-pressure pipelines and equipment. It is widely applied in industries such as chemical, petroleum, natural gas, thermal power generation, and nuclear power.

Zizi Engineering Co. Ltd. has strong technical capabilities, advanced production equipment, and comprehensive testing methods. We have a complete seamless steel pipe production line and advanced testing equipment, including ultrasonic and eddy current flaw detectors, hydraulic presses, chemical labs, and spectrometers. We specialize in pipes meeting ASTM A335, A213, A312, A269, GIS 3459, and EN 10216-5 standards. Our products include special materials such as alloys, austenitic steels, and duplex steels. Our products are highly praised by domestic and international users. Feel free to contact us.

ASTM A335 Standard Scope

The ASTM A335 standard is applicable to seamless ferritic alloy steel pipes used in high-temperature service. It specifies the nominal and minimum wall thicknesses, and requires that the pipes can adapt to forming operations such as bending and flanging, as well as fusion welding. It covers various grades of low and medium alloy ferritic steels with a chromium content not exceeding 10%. There are optional supplementary requirements (S1 to S8). In the standard, the values in the International System of Units (SI) and inch-pound units are respectively regarded as the standards and need to be used independently. When “M” is not specified, inch-pound units shall be adopted. This standard is formulated in accordance with the relevant principles of the Technical Barriers to Trade (TBT) Committee of the World Trade Organization.

ASTM A335 P22 Pipe Specification

Product name: Astm a335 p22 pipe, Asme a335 p22 pipe

Type: Seamless/fabricated

Standard: ASTM A335, ASME SA335

Sizes: 1/2” to 24”

Wall thickness: SCH 20 – 160, XXS

Length: 6 meters, 12 meters or customized.

Manufacturing: Seamless production, either hot – finished or cold – finished.

Ends: Plain End, Beveled End, Treaded

ASTM A335 P22 Pipe Chemical Composition

ASTM A335 P22 Pipe Mechanical Properties

ASTM A335 P22 Equivalent

ASTM A335 Gr P22 is equivalent to several international standards, including EN 10216-2, ASTM A213, ASME SA213, GOST 550-75, and NBR 5603.

ASTM A335 P22 Pipe Heat Treatment

ASTM A335 P22 Pipe Permissible Variation in Wall Thickness

ASTM A335 P22 Pipe Elongation Requirements

ASTM A335 P22 Pipe Outside Diameter Tolerance

Comparison of P22 and T22 Alloy Seamless Steel Pipe

P22, per ASTM SA335, is a seamless alloy steel pipe for high-temperature piping, used mainly for pipe connections. T22, per ASTM SA213, is a seamless alloy steel tube used on boiler heating surfaces exposed to flue gases. Both are equivalent to the German grade 10CrMo910. Both P22 and T22 have similar chemical compositions: C (0.05~0.15), Si (≤0.50), Mn (0.30~0.60), P (≤0.025), S (≤0.025), Cr (1.90~2.60), and Mo (0.87~1.13). We specialize in manufacturing a wide range of high-quality alloy seamless steel pipes, including grades such as P5, P11, P12, P22, P91, and more. In addition, we produce various pipe fittings, including flanges, elbows, bends, and tees. Our products are fully customizable in both material composition and size, ensuring they meet the specific and diverse requirements of our customers. Feel free to contact us.

ASTM A335 P22 Pipe Mechanical Tests Specified

Transverse or Longitudinal Tension Test, Hardness Test, and Flattening or Bend Test. For material heat treated in a batch-type furnace, tests shall be made on 5% of the pipe from each treated lot. For small lots, at least one pipe shall be tested. For material heat treated by the continuous process, tests shall be made on a sufficient number of pipe to constitute 5% of the lot, but in no case less than 2 pipe.

ASTM A335 P22 Pipe Hydrostatic Test

Each length of pipe shall be subjected to the hydrostatic test or nondestructive examination, as required by the relevant specifications.

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