ASTM A672 Gr. C60 Cl 12, 22, 32 EFW Pipes Manufacturer | EFW Carbon Steel Pipe Supplier
We manufacture and supply ASTM A672 Grade C60 Class 12, Class 22 and Class 32 EFW carbon steel pipes for high-pressure piping systems operating at moderate temperatures.
ASTM A672 C60 pipe is electric-fusion-welded with filler metal added and manufactured from ASTM A516 Grade 60 pressure-vessel-quality carbon steel plate. Large-diameter and heavy-wall pipes can be supplied in customized dimensions with radiographic examination, pressure testing and heat treatment according to the specified ASTM class.
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
ASTM A671 vs A672 vs A691
These ASTM EFW pipe standards serve different temperature and service ranges.
| Standard | Primary Service | Typical Material Basis |
|---|---|---|
| ASTM A671 | Atmospheric and lower temperatures | Pressure-vessel-quality plate |
| ASTM A672 | High pressure at moderate temperatures | Carbon steel pressure-vessel plate |
| ASTM A691 | High pressure at high temperatures | Carbon and alloy steel plate |
ASTM A672 should therefore not be described as a lower-temperature EFW pipe standard.
Related Products
- ASTM A671 CC60 EFW Pipe – EFW carbon steel pipe for atmospheric and lower-temperature service.
- ASTM A672 C65 EFW Pipe – Higher-strength A672 EFW carbon steel pipe.
- ASTM A672 C70 EFW Pipe – EFW pipe manufactured from A516 Grade 70 plate.
- ASTM A691 EFW Carbon & Alloy Steel Pipe – Large-diameter EFW pipe for high-temperature, high-pressure service.
- ASTM A516 Grade 60 Steel Plate – Pressure-vessel-quality carbon steel plate used for A672 C60 pipe.
- ASTM A516 Grade 70 Steel Plate – Higher-strength pressure vessel plate.
- ASTM A106 Grade B Seamless Pipe – Seamless carbon steel pipe for high-temperature service.
- ASTM A234 WPB Pipe Fittings – Carbon steel butt-weld fittings for process piping.
ASTM A672 C60 EFW Pipe Manufacturer
We supply ASTM A672 Grade C60 Class 12, Class 22 and Class 32 EFW carbon steel pipes for international high-pressure piping projects.
Large diameters, heavy walls, fixed lengths, special end preparation, heat treatment, radiographic examination and project-specific inspection documentation can be supplied according to customer requirements.
For quotation, please specify the ASTM grade and class, outside diameter, wall thickness, length, quantity, end preparation and inspection requirements.
