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American Society of Mechanical Engineers

Founded in 1880 by a small group of leading industrialists, ASME is a not-for-profit membership organization that enables knowledge sharing and skills development across all engineering disciplines.

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Series details Title Year Status
ASME B16.25:2022 Buttwelding ends 2022 Current
ASME B16.26:2018 Cast copper alloy fittings for flared copper tubes 2018 Withdrawn
ASME B16.26:2024 Cast copper alloy fittings for flared copper tubes 2024 Current
ASME B16.29:2017 Wrought copper and wrought copper alloy solder-joint drainage fittings - DWV 2017 Withdrawn
ASME B16.29:2021 Wrought copper and wrought copper alloy solder-joint drainage fittings - DWV 2021 Current
ASME B16.34:2020 Valves - flanged, threaded, and welding end 2020 Withdrawn
ASME B16.34:2025 Valves - flanged, threaded, and welding end 2025 Current
ASME B16.39:2019 Malleable iron threaded pipe unions: classes 150, 250, and 300 2019 Withdrawn
ASME B16.39:2025 Malleable iron threaded pipe unions: classes 150, 250, and 300 2025 Current
ASME B16.40-2019 Manually operated thermoplastic gas shutoffs and valves in gas distribution systems 2019 Withdrawn
ASME B16.40-2024 Manually operated thermoplastic gas shutoffs and valves in gas distribution systems 2024 Current
ASME B16.50:2018 Wrought copper and copper alloy braze-joint pressure fittings 2018 Withdrawn
ASME B16.50:2021 Wrought copper and copper alloy braze-joint pressure fittings 2021 Current
ASME B18.6.1:1981 Wood screws (inch series) 1981 Current
ASME B18.6.3:2013 Machine screws, tapping screws, and metallic drive screws (inch series) 2013 Withdrawn
ASME B18.6.3:2024 Machine screws, tapping screws, and metallic drive screws (inch series) 2024 Current
ASME B18.21.1:2009 Washers: Helical spring-lock, tooth lock, and plain washers (inch series) 2009 Current
ASME B31.1:2020 Power piping 2020 Withdrawn
ASME B31.1:2022 Power piping 2022 Withdrawn
ASME B31.1:2024 Power piping 2024 Current

Page 5 of 7