ASTM A672 Gr. C60 Cl 12, 22, 32 EFW Pipes Manufacturer | EFW Carbon Steel Pipe Supplier

ASTM A672 C60 Pipespecification covers electric-fusion-welded steel pipe with filler metal added, fabricated from pressure vessel quality plate of several analyses and strength levels and suitable for high-pressure service at atmospheric and lower temperature

ASTM A672 C60 is a carbon steel pipe with a tensile strength of 415 – 550 MPa and yield

strength of at minimum 220 MPa for high-pressure service at moderate temperatures,

What is ASTM A672 Grade C60?

ASTM A672 is the standard for Electric Fusion Welded (EFW) Steel Pipe intended for atmospheric and lower-temperature applications.
Grade C60 represents a medium-carbon steel grade that provides strong mechanical properties and good weldability.

ASTM A672 Grade C60 is manufactured from ASTM A516 Grade 60 steel plate by the EFW welding process.

ASTM A672 Grade C60 Chemical Composotion

ASTM A672 Grade C60 Mechanical Properties

(As per ASTM A672 / Carbon Steel Grade C60)

• Tensile Strength: 415–550 MPa

• Yield Strength: ≥ 240 MPa

• Elongation: As specified by ASTM A672 tables

Heat Treatment by Class (ASTM A672 Gr. C60)

1.ASTM A672 Gr. C60Class 10 / Class 11

• No heat treatment required for the pipe after welding.

• Used for non-critical, low-stress applications.

• Weld may receive local heat only if required by the manufacturer.

2. Class 12 (Stress Relieved)

• Mandatory stress-relief heat treatment after welding.

• Typical temperature: 595–675°C (1100–1250°F)

• Purpose: reduce residual stresses from welding and improve structural stability.

3. Class 20 (Normalized)

• Pipe is supplied normalized after forming.

• Normalizing temperature: approx. 870–930°C (1600–1700°F)

• Improves grain structure and toughness.

4. Class 22 (Normalized + Weld Treatment)

• Base metal: Normalized

• Weld:

  • Stress relieved, OR

  • Normalized, depending on buyer requirement

• Most commonly used class for high-integrity pipeline service.

• Ensures weld and body have uniform mechanical properties.

5. Class 30 (Quenched & Tempered)

• Optional, less commonly used

• Quench + Temper heat treatment gives improved:

  • Strength

  • Toughness

  • Weld integrity

6. Class 32 (Quenched & Tempered + Weld Treatment)

• Base metal: Quenched and Tempered

• Weld:

  • Stress relieved OR normalized

• Used for higher-pressure or cyclic service conditions.

Size Range

• Outer Diameter: 16″ to 120″

• Wall Thickness: SCH 20 to SCH 160, XXS, or custom

• Length: Single Random, Double Random, or Fixed up to 18 meters

ASTM-A672-C60-CL22-EFW-Steel-Pipe

End Finishes

• Beveled Ends (BE)

• Plain Ends (PE)

• Welded-on Flanges

• Custom beveling available