American Petroleum Institute
Code & Standards We Follow
- API 620 – Design and Construction of Large, Welded, Low Pressure Storage Tanks
- API 650 – Welded Steel Tanks for Oil Storage
- API 660 – Shell-and-Tube Heat Exchangers
- API 661 – Air-Cooled Heat Exchangers for General Refinery Service
- API 662 – Plate Heat Exchangers for General Refinery Services
- ASME B31.1 – Power Piping
- ASME B31.3 – Process Piping
- ASME B31.4 – Pipeline Transportation Systems for Liquids and Slurries
ASME B31.8 – Gas Transmission & Distribution Piping Systems

