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BIG Co., Ltd
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 A335 Alloy Pipes

ASTM A335 Alloy Pipes

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Alloy Pipes


ASTM A335 is a ASTM standard specifies Seamless Ferritic Alloy Steel Pipe for High-Temperature Service. ASTM A335 pipe ordered to this specification shall be suitable for bending and similar forming operations, and for fusion welding. Selection will depend upon design, service conditions, mechanical properties, and high-temperature characteristics.

Steel Grade:

ASTM A335 GR P5 | GR P9 | GR P11 | GR P22 | GR P91 | GR P92.

Size (mm): O.D.: 51-508; W.T.:7∼60; L: max 12000 and other specifications in accordance with customer 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:

StandardSteel GradeTensile Strength (MPa)Yield Strength (MPa)Elongation (%)Impact Energy(J)Rigidity
ASME SA335SA335 P11≥415≥205≥22≥35≤163HB
SA335 P12≥415≥220≥22≥35≤163HB
SA335 P22≥415≥205≥22≥35≤163HB
SA335 P5≥415≥205≥22≥35≤187HB
SA335 P91585∼760≥415≥20≥35≤250HB
SA335 P92≥620≥440≥20≥35≤250HB

Grade and Chemical Composition (%)

GradeCMnP, S, maxSiCrMo
P220.05-0.150.30-0.600.0250.50 max1.90-2.600.87-1.13
P50.15 max0.30-0.600.0250.50 max4.00-6.000.45-0.65
P90.15 max0.30-0.600.0250.25-1.008.00-10.000.90-1.10
V 0.18-0.25N 0.03-0.07Ni 0.40 maxAl 0.02 maxNb 0.06-0.10Ti 0.01 max
P920.07-0.130.30-0.600.020/0.0100.50 max8.50-9.500.30-0.60
V 0.15-0.25N 0.03-0.07Ni 0.40 maxAl 0.02 maxNb 0.04-0.09W 1.50-2.00
B 0.001-0.006Ti 0.01 maxZr 0.01 max

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 A335 Alloy Pipes Images

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