ASTM A672 Carbon Steel Welded Pipe

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ASTM A672 Electrofusion Welded (EFW) Steel Pipe

Standard Overview:

ASTM A672 regulates the production and use of electric fusion welded steel pipes. These steel pipes are used to transport fluids and gases at medium and high temperatures. Therefore, they require high strength and durability. The ASTM A672 standard mainly covers the testing of chemical composition, mechanical properties and manufacturing process of electric fusion welded steel pipes.

Main Materials:

Carbon steel and high-strength low-alloy steel.

Scope of Application:

ASTM A672 standard applies to electric fusion welded steel pipes. They are mainly suitable for pressure vessels and high-durability piping systems.

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Specification of ASTM A672 Pipe

Standard	ASTM A672
Procedure	EFW
Dimensions	400mm in outside diameter or larger, 16″- Larger, DN6 – DN650
Thickness	≤75mm, SCH 40 – SCH 160
Unit Length	6 meters（20feet）
Steel Grade	ASTM A672 A 45, ASTM A672 B 70, ASTM A672 D70, ASTM A672 J90, ASTM A672 L70, ASTM A672 A 50, ASTM A672C 55, ASTM A672 D80, ASTM A672 J100, ASTM A672 L75, ASTM A672 A 55, ASTM A672 C 60, ASTM A672 H75, ASTM A672 K75, ASTM A672 N75, ASTM A672 B 60, ASTM A672 C 65, ASTM A672 H80, ASTM A672 K85, ASTM A672 B 65, ASTM A672 C 70, ASTM A672 J80, ASTM A672 L65
Surface Coating	Varnishing, Black, Oiling, Hot Dip Galvanizing
End Type	Square cut, Bevelled, Threaded, Grooved
Joint Method	Fitting, Flange, Coupling, Clamp, Pipe Shoulder, Welding
Pipe Machining	Welding, Bending, Hole Drilling, Punching, Swaging, Tapering, Flaring, Expanding

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Dimension

Outside Diameter：	16 in. [400mm] or larger
Wall Thickness：	up to 3 in. [75 mm]
Pipe having other dimensions may be furnished provided it complies with all other requirements of this specification.

Steel Plate Material Specification
Pipe Grade	Type of Steel	ASTM Specification
Pipe Grade	Type of Steel	No.	Grade
A 45	plain carbon	A285/A285M	A
A 50	plain carbon	A285/A285M	B
A 55	plain carbon	A285/A285M	C
B 60	plain carbon, killed	A515/A515M	60
B 65	plain carbon, killed	A515/A515M	65
B 70	plain carbon, killed	A515/A515M	70
C 55	plain carbon, killed, fine grain	A516/A516M	55
C 60	plain carbon, killed, fine grain	A516/A516M	60
C 65	plain carbon, killed, fine grain	A516/A516M	65
C 70	plain carbon, killed, fine grain	A516/A516M	70
D 70	manganese – silicon—normalized	A537/A537M	1
D80	manganese – silicon — Q&T^A	A537/A537M	2
H 75	manganese-molybdenum — normalized	A302/A302M	A
H 80	manganese-molybdenum — normalized	A302/A302M	B, C or D
J 80	manganese-molybdenum — Q&T^A	A533/A533M	CI−1^B
J 90	manganese-molybdenum — Q&T^A	A533/A533M	CI−2^B
J 100	manganese-molybdenum — Q&T^A	A533/A533M	CI−3^B
K 75	chromium-manganese-silicon	A202/A202M	A
K 85	chromium-manganese-silicon	A202/A202M	B
L 65	molybdenum	A204/A204M	A
L 70	molybdenum	A204/A204M	B
L 75	molybdenum	A204/A204M	C
N 75	manganese-silicon	A299/A299M	…
A: Q&T = quenched and tempered. B: Any grade may be furnished.

Chemical Requirement

Our ASTM A672/A672M Steel Pipes conform to strict chemical requirements to ensure their robustness and durability. Each pipe is analyzed for its chemical composition, including elements such as carbon, manganese, phosphorus, sulfur, and silicon. This analysis ensures that the pipes possess the necessary chemical properties to withstand high-pressure service at moderate temperatures. With UNIASEN, you can trust that our pipes are chemically robust and ready for your most challenging projects.

Mechanical Requirement

The mechanical requirements for our ASTM A672/A672M Steel Pipes are designed to ensure their resilience and durability under high-pressure service. Each pipe undergoes a tension test and a transverse-guided-weld-bend test to ensure it can endure the stresses of your project. Additionally, each weld is radiographically examined to ensure its integrity. With UNIASEN, you can be confident that our pipes are mechanically robust and built to last.

Why Choose UNIASEN?

Pipes must perform well and meet all codes, whether or not heat treatment is required.
ASTM A672 steel pipes have detailed specs. They cover dimensions, production methods, steel grades, surface coatings, end types, connection methods, and processing services.
Each pipe has a protective coating. Its ends and connections ensure easy, durable installation.
Processing services are available to customize pipes to your unique requirements.
You can find detailed ASTM A672 steel pipe dimension tables. They include the outer diameter, wall thickness, and length. This data will help you plan your project.
At UNIASEN, we rigorously inspect each pipe. This ensures it meets the required dimensions, chemical makeup, and mechanical properties. Any deviation from these specifications is corrected before the pipe leaves our facility.