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
1. Petrochemical Industry
Atmospheric and Vacuum Distillation Unit: Hot Oil Pipeline (Pressure <=10 MPa, Temperature <=380℃)
Methanol Synthesis: Medium-Pressure Circulating Gas Pipeline (5-8 MPa, 250-300℃)
2. Power Energy
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)
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)
