ASME B16.5-2020: Pipe Flanges and Flanged Fittings
Product Summary:
ASME B16.5-2020 defines the requirements for pipe flanges and flanged fittings in sizes NPS ½ through NPS 24, covering pressure–temperature ratings, dimensions, tolerances, materials, and testing. It applies to components used in bolted flange joints made from cast, forged, or plate materials in industrial piping systems.
Key Features:
- Pressure–temperature ratings for Classes 150 through 2500
- Dimensional standards for weld neck, blind, reducing, and other flange types
- Specifications for bolting materials, gaskets, and flange assembly practices
- Manufacturing tolerances and permanent marking requirements
- Material listings with corresponding ASTM designations for forgings, castings, and plates
- Guidance on gasket selection, bolted joint design, and system hydrotesting
- Appendices covering bolt length calculations, pressure rating derivation, and quality system standards
- Metric and U.S. Customary units presented side-by-side for reference
Who It’s For:
Essential for piping designers, mechanical engineers, fabricators, and QA/QC personnel involved in pressure piping systems across oil, gas, chemical, and industrial sectors.
ASME B16.5-2020
ASME B16.5-2020: Pipe Flanges and Flanged Fittings
Product Summary:
ASME B16.5-2020 defines the requirements for pipe flanges and flanged fittings in sizes NPS ½ through NPS 24, covering pressure–temperature ratings, dimensions, tolerances, materials, and testing. It applies to components used in bolted flange joints made from cast, forged, or plate materials in industrial piping systems.
Key Features:
- Pressure–temperature ratings for Classes 150 through 2500
- Dimensional standards for weld neck, blind, reducing, and other flange types
- Specifications for bolting materials, gaskets, and flange assembly practices
- Manufacturing tolerances and permanent marking requirements
- Material listings with corresponding ASTM designations for forgings, castings, and plates
- Guidance on gasket selection, bolted joint design, and system hydrotesting
- Appendices covering bolt length calculations, pressure rating derivation, and quality system standards
- Metric and U.S. Customary units presented side-by-side for reference
Who It’s For:
Essential for piping designers, mechanical engineers, fabricators, and QA/QC personnel involved in pressure piping systems across oil, gas, chemical, and industrial sectors.
ASME B16.5-2020
ASME B31.3-2022: Process Piping
ASME B31.3-2022: Process Piping provides comprehensive engineering requirements for the design, materials, fabrication, examination, testing, and safety of process piping systems used in petroleum refineries, chemical plants, pharmaceutical facilities, textile plants, paper mills, and related processing plants and terminals. It is a vital code for ensuring piping integrity in high-pressure, high-temperature, and corrosive service environments.
Highlights:
- Applies to metallic and nonmetallic piping for chemicals, petroleum, natural gas, and related fluids
- Covers piping components: pipe, flanges, valves, gaskets, bolts, expansion joints, and supports
- Design criteria for internal pressure, sustained loads, displacement strains, and occasional loads
- Construction requirements including welding, brazing, bending, assembly, and material specifications
- Mandatory rules for examination, testing, inspection, and leak testing procedures
- Stress range reduction factors, flexibility analysis, and allowable stress values by material and temperature
- Qualification requirements for personnel, procedures, and fabrication documentation
- Integration with ASME Section IX for welding and ASME B31.1 for power piping interfaces
- Updated stress tables and revisions to weld design rules in para. 328.5.2
- Errata incorporated for clarity on strength tables and weld joint tolerances
Who It’s For:
Mechanical engineers, piping designers, fabricators, inspectors, and maintenance teams working on the safe and code-compliant construction and modification of process piping systems across industries.
B31.3-2022
ASME B31.3-2022: Process Piping
ASME B31.3-2022: Process Piping provides comprehensive engineering requirements for the design, materials, fabrication, examination, testing, and safety of process piping systems used in petroleum refineries, chemical plants, pharmaceutical facilities, textile plants, paper mills, and related processing plants and terminals. It is a vital code for ensuring piping integrity in high-pressure, high-temperature, and corrosive service environments.
Highlights:
- Applies to metallic and nonmetallic piping for chemicals, petroleum, natural gas, and related fluids
- Covers piping components: pipe, flanges, valves, gaskets, bolts, expansion joints, and supports
- Design criteria for internal pressure, sustained loads, displacement strains, and occasional loads
- Construction requirements including welding, brazing, bending, assembly, and material specifications
- Mandatory rules for examination, testing, inspection, and leak testing procedures
- Stress range reduction factors, flexibility analysis, and allowable stress values by material and temperature
- Qualification requirements for personnel, procedures, and fabrication documentation
- Integration with ASME Section IX for welding and ASME B31.1 for power piping interfaces
- Updated stress tables and revisions to weld design rules in para. 328.5.2
- Errata incorporated for clarity on strength tables and weld joint tolerances
Who It’s For:
Mechanical engineers, piping designers, fabricators, inspectors, and maintenance teams working on the safe and code-compliant construction and modification of process piping systems across industries.
B31.3-2022