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ASTM A335 P11 Seamless Pipes

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ASTM A335 P11 Seamless Pipes Specification

Connection
Welded, Threaded, Plain End, Beveled End

End Protector
Plastic Caps, Beveled/Plain/Coupled Ends

Product Type
ASTM A335 P11 Seamless Pipe

Application
High temperature service, boilers, power plants, petrochemical plants, oil refineries, and pressure vessels

Tolerance
1%

Surface Finish
Polished, Annealed, Pickled, Oiled, Black, Bright

Material
Alloy Steel (1.25Cr-0.5Mo)

Section Shape
Round

Standard
ASTM A335 / ASME SA335

Technique
Cold Drawn / Hot Finished Seamless

Surface Treatment
Varnished/Oiled/Black Painted/Phosphated/Galvanized

Alloy or Not
Alloy

Outer Diameter
12.7 mm 323.9 mm

Thickness
2 mm 60 mm

Size
Custom/Standard Sizes Available

Length
Single Random, Double Random, Cut Length (up to 12 meters)

Minimum Tensile Strength
415 MPa

Grade
P11

Packaging
Standard Export Seaworthy Packing, Bundles, Wooden Boxes

Temperature Range
Up to 600C

Elongation
30% (min)

Heat Treatment
Normalized and Tempered

Minimum Yield Strength
205 MPa

Hardness
163 HB Max (Brinell)

Testing
Hydrostatic Tested, Ultrasonic Tested, Eddy Current Inspected

About ASTM A335 P11 Seamless Pipes

What Are Specification ASTM A335 P11 Seamless Pipes?

Size in Inch	1/8NB TO 24NB inch
ASTM Standards	ASTM A 335, and ASME SA 335
Type	Seamless Pipe
Specialized in Size	Large Diameter Size
Outer Dimensions Chart	19.05milimeter 114.3milimeter
Wall Thickness Chart	2.0milimeter 14 milimeter
Length in milimeter	max 16000milimeter
Schedule Chart	Schedule 20 - XXS up to 250 milimeter thk.
Pipe Form	Round, Rectangular, Square, Hydraulic Etc.
Length	Single, Double Random & Cut to Length.
Pipe & Tube End	Plain, Beveled, Treaded.

Equivalent material Of ASTM A335 P11 Seamless Pipes?

ASTM Number	ASME Number	Equivalent Grade	JIS G 3458 Chart	UNS Number	BS Number	DIN Number	ISO Number	ABS Number	NK Numbero	LRS Number
A335 P11	SA335 P11	T11	STPA 23	K11597	3604 P1 621	-	-	ABS 11	KSTPA 23	-

ASTM Standard	British Standards institute(BSI)	Alloy P11 Steel Material
A335 Gr. P11	3604/621	1 1/4% Cr 1/2% Mo

Chemical Composition Of ASTM A335 P11 Seamless Pipes?

Grade	UNS	C	Mn	P	S	Si	Cr	Mo
P11	K11597	0.05~0.15	0.30~0.61	0.025	0.025	0.50~1.00	1.00~1.50	0.44~0.65

Mechanical Properties Of ASTM A335 P11 Seamless Pipes?

Tensile Strength, MPa	Yield Strength, MPa	Elongation, %
415 min	205 min	30 min

Ideal for High-Temperature Applications

ASTM A335 P11 Seamless Pipes are engineered specifically for high-temperature environments such as power plants, refineries, boilers, and petrochemical facilities. Their material composition and heat treatment facilitate reliable performance and durability even under fluctuating temperatures up to 600C.

Stringently Tested for Quality Assurance

Every pipe is subjected to meticulous testing methods like hydrostatic, ultrasonic, and eddy current inspection to verify its integrity and compliance with international standards. These stringent quality checks ensure the product is free from defects and fit for critical applications.

Versatile Sizing and Finishing Options

Available in a wide range of outer diameters (12.7 mm to 323.9 mm), thickness (2 mm to 60 mm), and lengths (up to 12 meters), these pipes can be customized to standards or client requirements. Multiple surface treatments and finishes provide resistance against corrosion and enhance longevity.

FAQs of ASTM A335 P11 Seamless Pipes:

Q: How are ASTM A335 P11 Seamless Pipes manufactured?

A: These pipes are produced using cold drawn or hot finished seamless techniques, followed by a normalization and tempering heat treatment process. This combination ensures exceptional strength, structural uniformity, and resistance to high-temperature stresses.

Q: What are the primary applications of ASTM A335 P11 Seamless Pipes?

A: These pipes are predominantly used in high-temperature applications such as power plants, boilers, pressure vessels, petrochemical units, and oil refineries due to their ability to withstand elevated temperatures and their excellent mechanical properties.

Q: When should I choose ASTM A335 P11 over other pipe grades?

A: P11 pipes are recommended when high mechanical strength, resistance to high temperatures (up to 600C), and durability are required, particularly in environments subject to thermal cycling and high pressure.

Q: Where are these pipes commonly exported or supplied from?

A: India is a major exporter, manufacturer, supplier, and trader of ASTM A335 P11 Seamless Pipes, known for adhering to strict international standards and providing a wide range of size and surface options.

Q: What testing processes ensure the quality of ASTM A335 P11 Seamless Pipes?

A: Every pipe undergoes hydrostatic testing, ultrasonic inspection, and eddy current evaluation. These comprehensive tests detect internal and surface defects, ensuring only high-quality pipes are delivered.

Q: How do the various surface treatments benefit these pipes?

A: Surface treatments such as varnishing, oiling, black painting, phosphating, and galvanizing protect the pipes against oxidation, corrosion, and other harsh environmental effects, extending their service life.

Q: What connection types and end finishes are available for these pipes?

A: ASTM A335 P11 Seamless Pipes can be supplied with welded, threaded, plain, or beveled ends, and in both polished and treated surface finishes to accommodate diverse installation requirements.

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