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BIG Co.,Ltd, located in Beijing, China. Which is 180km away from Xingang port. Our corporation is specialized in handling the business of Alloy steel products. We have more than 10-years experiences
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ASTM A333 Alloy Pipes

ASTM A333 Alloy Pipes

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ASTM/ASME Standard Alloy Pipes


Standard Specification for Seamless and Welded Steel Pipe for Low-Temperature Service.

ASTM A333 standard covers wall seamless and welded carbon and alloy steel pipe intended for use at low temperatures. ASTM A333 alloy pipe shall be made by the seamless or welding process with the addition of no filler metal in the welding operation. All seamless and welded pipes shall be treated to control their microstructure. Tensile tests, impact tests, hydrostatic tests, and nondestructive electric tests shall be made in accordance to specified requirements.

Size (mm) we can supply:

Hot-rolled: O.D.: 51-508; W.T.:7∼60; L: max 16000

Cold-drawn: O.D.: 10-50; W.T.:2∼10; L: max 16000

Hot-expanded:O.D.: 325-1020; W.T.:6∼50; L: max 12000 and other specifications in accordance with customer requirements.


Beveled/black painting/ plastic caps/ in bundles/ steel strips/ wooden protection

Inspection and Test:

Chemical Composition Inspection, Mechanical Properties Test(Tensile Strength, Yield Strength,Elongation, Flaring, Flattening, Bending, Hardness, Impact Test), Surface and Dimension Test, Nodestructive Test, Hydrostatic Test.

Surface Treatment:

Oil-dip, Varnish, Passivation, Phosphating, Shot Blasting, Epoxy & Fbe Coating Painting as requested.

Mechanical properties:

StandardGradeTensile Strength (MPa)Yield Point (MPa)Elongation (%)
ASTM A333Grade 1≥380≥205≥35≥25
Grade 3≥450≥240≥30≥20
Grade 4≥415≥240≥30≥16.5
Grade 6≥415≥240≥30≥16.5
Grade 7≥450≥240≥30≥22
Grade 8≥690≥515≥22
Grade 9≥435≥315≥28
Grade 10≥550≥450≥22
Grade 11≥450≥240≥18

Chemical Composition (%) of ASTM A333 steel pipe

StandardGradeChemical Composition (%)
ASTM A333Grade 1≤0.300.40-1.06≤0.025≤0.025
Grade 3≤0.190.18-0.370.31-0.64≤0.025≤0.0253.18-3.82
Grade 4≤0.120.18-0.370.50-1.05≤0.025≤0.0250.44-1.010.47-0.980.40-0.750.04-0.30
Grade 6≤0.30≥0.100.29-1.06≤0.025≤0.025
Grade 7≤0.190.13-0.32≤0.90≤0.025≤0.0252.03-2.57
Grade 8≤0.130.13-0.32≤0.90≤0.025≤0.0258.40-9.60
Grade 9≤0.200.40-1.06≤0.025≤0.0251.60-2.240.75-1.25
Grade 10≤0.200.10-0.351.15-1.50≤0.03≤0.015≤0.15≤0.25≤0.015≤0.50≤0.12≤0.06
Grade 11≤0.10≤0.35≤0.6≤0.025≤0.025≤0.5035.0-37.0≤0.50

Strike temperature condition:

CradeThe lowest temperature for strike test
ASTM A333 Grade 1-50-45
ASTM A333 Grade 3-150-100
ASTM A333 Grade 4-150-100
ASTM A333 Grade 6-50-45
ASTM A333 Grade 7-100-75
ASTM A333 Grade 8-320-195
ASTM A333 Grade 9-100-75
ASTM A333 Grade 10-75-60

Ordering Information

Orders for material under this specification should include the following, as required, to describe the desired material adequately:

QuantityFeet, meters, or number of lengths
Name of materialSeamless Alloy Steel Pipe
ManufactureHot-finished or cold-drawn
Size using one of the following:
NPS and Schedule Number
Outside Diameter and Nominal Wall Thickness
LengthSpecific or Random
End Finish

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ASTM A333 Alloy Pipes Images

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