ASTM A672 Grade C60 Electric-Fusion-Welded Steel Pipe description
ASTM A672 C60 EFW Pipe is a medium-temperature pressure-bearing electrofusion welded carbon steel pipe conforming to ASTM A672 standard. Its core characteristics are:
"C60": Material grade, carbon manganese steel (C≤0.22%, Mn:1.00-1.60%) with a minimum yield strength of 60 ksi (415 MPa).
"EFW": Manufacturing process is electrofusion welding, achieving a seamless bond by melting the steel strip edges with an electric arc.
Heat treatment: Forced normalizing (890-930℃ air cooling) to improve high-temperature performance.
Inspection level: Must match Class 12/22/32 (default Class 22, partial non-destructive testing).
ASTM A672 C60 Cl22 pipe Size Chart
Applications
1. Petrochemical Industry
Refining Units:
Atmospheric and Vacuum Distillation Unit: Hot Oil Pipeline (Pressure ≤10 MPa, Temperature ≤380℃)
Catalytic Cracking Unit: Slurry Transport Pipeline (including solid particulate media)
Chemical Processes:
Methanol Synthesis: Medium-Pressure Circulating Gas Pipeline (5-8 MPa, 250-300℃)
2. Power Energy
Thermal Systems:
Coal-fired Power Plant: Medium-Temperature Steam Pipeline (Pressure ≤8.3 MPa, Temperature ≤400℃)
Geothermal Power Plant: Two-Phase Flow Transport Pipeline (including steam-water mixture)
Waste Heat Recovery:
Gas Turbine: Exhaust Heat Exchanger Connecting Pipeline (350-400℃)
3. Industrial Systems
High-Temperature Fluid Transport:
Heat Transfer Oil System: Main Pipeline (Temperature ≤400℃)
Molten Salt Thermal Storage Heat transfer piping (CL22 leak-proof protection)
Compressed gas: Air compressor station, high-pressure air main (≤10 MPa, EFW inner rust-proof)
Test and inspection
Packaging and shipping
