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ASTM A334 Grade 6 Seamless Pipes

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ASTM A334 Grade 6 Seamless Pipes Specification

Surface Finish
Polished

Application
Oil & Gas Industry, Chemical Industry, Construction, Power Plant, Heat Exchangers

Product Type
Seamless Pipe

End Protector
Plastic Caps

Connection
Plain End / Beveled End / Threaded

Tolerance
1% or as per standard

Material
Carbon Steel (ASTM A334 Grade 6)

Section Shape
Round

Standard
ASTM A334 / ASME SA334

Technique
Cold Drawn / Hot Rolled

Surface Treatment
Black Painted, Anti-rust Oil

Alloy or Not
Non-Alloy

Outer Diameter
13.72 mm to 323.9 mm

Thickness
2.0 mm to 40 mm

Size
Custom / As per requirement

Length
Single Random, Double Random & Cut Lengths

Minimum Tensile Strength
415 MPa

Density
7.85 g/cm

Hardness
35 HRB (as per standard)

Corrosion Resistance
Moderate

Packing
Bundled with Steel Strips, Plastic Wrapping or as required

Testing
Hydrostatic Test, Non-Destructive Test, Ultrasonic Test

Operating Temperature
-50C to +400C

Heat Treatment
Annealed/Nomalized/Fully Killed Steel

Inspection
Third Party Inspection Allowed

Minimum Yield Strength
240 MPa

Delivery Condition
Annealed, Normalized

Pipe Ends
Plain, Beveled, Threaded with Couplings

Impact Test Requirement
Charpy V-Notch, -45C

Marking
Stenciled/Tag Marked on Each Pipe

About ASTM A334 Grade 6 Seamless Pipes

What Are Specification ASTM A334 Grade 6 Seamless Pipes?

Size Range:	1/2 NB to 36 NB
Thickness:	SCH 40, SCH 80, SCH 160, SCH XS, SCH XXS, All Schedules
Applications:	Oil Refineries, Petrochemicals, Power Generation (Nuclear/Thermal), Steel, Sugar, Boiler Equipments, Pressure Vessels and General Engineering Purposes
End Connections for Line Pipes:	Plain, Bevel, Screwed, Threaded
Type:	Seamless / ERW / Welded / Fabricated / CDW
Form:	Round Pipes/Tubes, Square Pipes/Tubes, Rectangular Pipe/Tubes, Coiled Tubes, U Shape, Pan Cake Coils, Hydraulic Tubes
Length:	Single Random, Double Random & Required Length, Custom Size 12 Meter lengths
End:	Plain End, Beveled End, Treaded
End Protection:	Plastic Caps
Outside Coating:	Black Painting, Anti-Corrosion Oil, Galvanised Finish, Finish as per customer Requirements
Inspection, Test Reports:	Mill Test Certificates, EN 10204 3.1, Chemical Reports, Mechanical Reports, PMI Test Reports, Visual Inspection Reports, Third Party Inspection Reports, NABL Approved Lab Reports, Destructive Test Report, Non Destructive Test Reports, India Boiler Regulations (IBR) Test Certificate
Packing:	Packed in Wooden Boxes, Plastic Bags, Steel Strips Bundled, or as per Customers Requests
Specials:	Sizes and Specifications other than above can be manufactured on request

Equivalent material Of ASTM A334 Grade 6 Seamless Pipes?

A334 GR 6 Carbon Steel Seamless Tube Equivalent Designation
DIN	EN	BS	NFA	ASTM	ASME
DIN 17179 Grade FGP 28	EN P265NL Grade 10217-4	NFA A 36-2051) Grade A 42 FP	ASTM A334 Grade6	ASME SA 334 Grade 6	UNI C20

Chemical Composition Of ASTM A334 Grade 6 Seamless Pipes?

A334 GR 6 Carbon Steel Seamless Tube Chemical Properties
Carbon	Silicon	Manganese	Phosphorous	Sulphur	Molybdenum	Nickel	Chromium
max 0.30	min 0.10	0.29-1.06	0.025	0.025

Mechanical Properties Of ASTM A334 Grade 6 Seamless Pipes?

A334 GR 6 Carbon Steel Seamless Tube Mechanical Properties
Yield Strength	Tensile Strength	Elongation A5 min
MPa min	ksi min	MPa min	MPa min	ksi min	Percentage
		415		60	30

Superior Mechanical Strength and Reliability

ASTM A334 Grade 6 Seamless Pipes are crafted for exceptional endurance, with a minimum yield strength of 240 MPa and tensile strength of 415 MPa. Rigorous testing ensures that every pipe reliably operates under extreme conditions, making them ideal for oil & gas and chemical industries where safety and durability are paramount.

Quality Assurance and Testing Procedures

These pipes undergo comprehensive testing, including hydrostatic, ultrasonic, and non-destructive tests. Each batch is subject to Charpy V-Notch impact assessments at -45C, confirming resilience at sub-zero temperatures. Third-party inspections are welcomed, supporting transparency and adherence to international standards.

Versatile Dimensions and Customizability

Available in outer diameters from 13.72 mm to 323.9 mm and thicknesses ranging from 2.0 mm to 40 mm, these pipes can be tailored to meet project-specific needs. Bundling, surface treatment, and marking options offer further customization, ensuring seamless integration into various industrial applications.

Comprehensive Surface and End Treatment

Pipe ends can be plain, beveled, or threaded, complemented with protective plastic caps. Surface finishes include polishing, black painting, and anti-rust oil treatments, enhancing durability and corrosion resistance in challenging operating environments.

FAQs of ASTM A334 Grade 6 Seamless Pipes:

Q: How are ASTM A334 Grade 6 Seamless Pipes tested for quality and integrity?

A: Each pipe is subjected to hydrostatic, non-destructive, and ultrasonic tests to ensure leak-proof performance and detect surface or internal defects. Additionally, Charpy V-Notch impact tests at -45C determine the pipes resilience in low-temperature environments.

Q: What makes ASTM A334 Grade 6 pipes suitable for extremely low and high temperatures?

A: Their robust material propertiesminimum yield strength of 240 MPa and tensile strength of 415 MPacombined with heat treatments like annealing and normalizing, enable reliable operation from -50C to +400C without compromising structural integrity.

Q: When is it advisable to choose these pipes for industrial projects?

A: ASTM A334 Grade 6 Seamless Pipes are ideal for use when projects require steady performance in harsh environments, such as oil refineries, chemical plants, power stations, and heat exchangers demanding stringent mechanical and impact resistance.

Q: What inspection options are available for buyers to ensure quality compliance?

A: Buyers can request third-party inspections for an unbiased assessment before shipment. These inspections validate tests, dimensions, surface finish, marking, and compliance with ASTM A334/ASME SA334 standards.

Q: Where are these pipes typically installed and utilized?

A: They are commonly used in the oil & gas industry, chemical processing, construction sites, power plants, and heat exchangers, functioning in critical fluid transport and structural support roles.

Q: How does the surface treatment contribute to the pipes longevity and corrosion resistance?

A: Surfaces may be polished, black painted, or coated with anti-rust oil, providing moderate corrosion resistance and improving durability in chemically aggressive or moisture-prone settings.

Q: What are the available options for pipe end finishing and marking?

A: Pipe ends can be delivered plain, beveled, or threaded (with couplings), marked either stenciled or with tags, as per project requirements. Each pipe also receives protective plastic caps to prevent damage during transit and storage.

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