Selected ASME Standards – Technical Reference List

The ASME (American Society of Mechanical Engineers) standards are globally recognized codes and technical rules used in pressure equipment, piping systems, power plants, oil & gas facilities, refineries, and heavy industries.
Below is a structured list of the most widely used ASME codes and standards:

Pressure Vessels & Boilers

ASME Section I – Power Boilers
ASME Section II – Materials (Specifications & Properties)
ASME Section III – Nuclear Facility Components
ASME Section IV – Heating Boilers
ASME Section V – Nondestructive Examination (NDE)
ASME Section VI – Recommended Rules for Care and Operation of Heating Boilers
ASME Section VII – Recommended Guidelines for Care of Power Boilers
ASME Section VIII – Pressure Vessels
- Division 1 – Design by Rules
- Division 2 – Design by Analysis
- Division 3 – High Pressure Vessels
ASME Section IX – Welding, Brazing, and Fusing Qualifications
ASME Section X – Fiber-Reinforced Plastic Pressure Vessels
ASME Section XI – Nuclear Inservice Inspection
ASME Section XII – Transport Tanks

Piping Codes

ASME B31.1 – Power Piping
ASME B31.3 – Process Piping
ASME B31.4 – Pipeline Transportation Systems for Liquids
ASME B31.5 – Refrigeration Piping
ASME B31.8 – Gas Transmission and Distribution Piping
ASME B31.9 – Building Services Piping
ASME B31.12 – Hydrogen Piping and Pipelines

Flanges, Fittings & Valves

ASME B16.5 – Pipe Flanges and Flanged Fittings
ASME B16.9 – Factory-Made Wrought Butt-Welding Fittings
ASME B16.10 – Valve Face-to-Face and End-to-End Dimensions
ASME B16.11 – Forged Fittings, Socket-Welding and Threaded
ASME B16.20 – Metallic Gaskets
ASME B16.21 – Nonmetallic Flat Gaskets
ASME B16.25 – Butt Welding Ends
ASME B16.34 – Valves: Flanged, Threaded, and Welding End
ASME B16.47 – Large Diameter Steel Flanges

Fasteners & Mechanical Components

ASME B1.1 – Unified Inch Screw Threads
ASME B1.13M – Metric Screw Threads
ASME B18.2.1 – Square and Hex Bolts and Screws
ASME B18.2.2 – Square and Hex Nuts
ASME B18.3 – Hex Socket Screws
ASME B18.6.3 – Slotted and Recessed Head Machine Screws

Testing, Quality & Safety

ASME NQA-1 – Quality Assurance Requirements for Nuclear Facilities
ASME OM Code – Operation and Maintenance of Nuclear Power Plants
ASME PTC Series – Performance Test Codes
ASME Y14.5 – Geometric Dimensioning and Tolerancing (GD&T)
ASME Y14.100 – Engineering Drawing Practices

Heat Exchangers & Process Equipment

ASME TEMA Reference – Shell & Tube Heat Exchanger Design
ASME RTP-1 – Reinforced Thermoset Plastic Equipment
ASME BPVC – Boiler and Pressure Vessel Code (Complete Set)

Applications of ASME Standards

ASME codes are used in:

Oil & Gas Refineries
Petrochemical & Chemical Plants
Power Generation Facilities
Desalination & Water Treatment Plants
Fertilizer & Process Industries
Steel & Heavy Manufacturing
Thermal Power Stations

Comprehensive Guide to ASME Standards