ASTM A335 Seamless Pipe

StandardASTM A335
MaterialAlloy Steel (various grades such as P1, P2, P5, P9, P11, P12, P15, P22, P91)
Manufacturing ProcessSeamless (Hot Finished)
Sizes1/2" NB to 36" NB (Nominal Bore)
Wall ThicknessSCH 20, SCH 30, SCH 40, STD, SCH 80, XS, SCH 100, SCH 120, SCH 140, SCH 160, XXS
LengthSpecific cut lengths up to 12 meters or as required
Heat TreatmentNormalized, Quenched & Tempered, Stress Relieved
EndsPlain End, Beveled End, Threaded
Surface CoatingBlack Painting, Varnish, Oil Coating, Hot Dip Galvanized, 3PE, FBE
CertificatesISO 9001, API 5L, CE
Categories: ,


Product Description

ASTM A335 seamless pipe are designed to meet the rigorous demands of high-temperature and high-pressure applications in the power generation and petrochemical industries. Manufactured to stringent ASTM standards, these pipes offer exceptional durability, high strength, and excellent resistance to corrosion and oxidation. Available in various grades such as P5, P9, P11, P22, and P91, our seamless pipes ensure reliable performance in extreme environments.

Chemical Composite ASTM A335 seamless pipe

ElementGrade P5Grade P9Grade P11Grade P22Grade P91
Carbon (C)0.15 max0.15 max0.05-0.150.05-0.150.08-0.12
Manganese (Mn)0.30-0.600.30-0.600.30-0.600.30-0.600.30-0.60
Phosphorus (P)0.025 max0.025 max0.025 max0.025 max0.020 max
Sulfur (S)0.025 max0.025 max0.025 max0.025 max0.010 max
Silicon (Si)0.50 max0.25-1.000.50-1.000.50 max0.20-0.50
Chromium (Cr)4.00-6.008.00-10.001.00-1.501.90-2.608.00-9.50
Molybdenum (Mo)0.45-0.650.90-1.100.44-0.650.87-1.130.85-1.05
Vanadium (V)----0.18-0.25
Nickel (Ni)----0.85-1.05
Nitrogen (N)----0.030-0.070

Mechanical Properties ASTM A335 seamless pipe

GradeTensile Strength (MPa)Yield Strength (MPa)Elongation (%)Hardness (HRC)
P5415 min205 min30 min60 max
P9415 min205 min30 min60 max
P11415 min205 min30 min85 max
P22415 min205 min30 min85 max
P91585 min415 min20 min85 max


ASTM A335 seamless pipes are integral components in high-temperature and high-pressure applications, designed to withstand extreme conditions in industries such as power generation, petrochemicals, and refineries. These pipes, available in various grades including P5, P9, P11, P22, and P91, offer exceptional strength, durability, and resistance to corrosion and oxidation.


There are no reviews yet.

Be the first to review “ASTM A335 Seamless Pipe”

Your email address will not be published. Required fields are marked *