EN 10204 Metallic products - Types of inspection documents*， 2023-12-23 Update
EN 1092-1 Flanges and their joints - Circular flanges for pipes@ valves@ fittings and accessories@ PN designated - Part 1: Steel flanges*， 2018-04-01 Update
EN 12165 Copper and copper alloys - Wrought and unwrought forging stock*， 2016-07-01 Update
EN 12450 Copper and copper alloys - Seamless, round copper capillary tubes*， 2023-12-23 Update
EN 13480-3 Metallic industrial piping - Part 3: Design and calculation*， 2021-07-31 Update
EN 13906-1 Cylindrical helical springs made from round wire and bar - Calculation and design - Part 1 : Compression springs
EN 14129 LPG Equipment and accessories - Pressure relief valves for LPG pressure vessels
EN 1503-1 Valves - Materials for Bodies, Bonnets and Covers - Part 1: Steels Specified in European Standards*， 2023-12-23 Update
EN 1503-2 Valves - Materials for Bodies, Bonnets and Covers - Part 2: Steels Other Than Those Specified in European Standards*， 2023-12-23 Update
EN 1503-3 Valves - Materials for Bodies, Bonnets and Covers - Part 3: Cast Irons Specified in European Standards Corrigendum; Ratified European Text
EN 1503-4 Valves - Materials for bodies, bonnets and covers - Part 4: Copper alloys specified in European Standards*， 2016-02-01 Update
EN 1563 Founding - Spheroidal graphite cast irons*， 2018-08-01 Update
EN 549 Rubber materials for seals and diaphragms for gas appliances and gas equipment*， 2023-05-03 Update
EN 751-1 Sealing materials for metallic threaded joints in contact with 1st, 2nd and 3rd family gases and hot water - Part 1: Anaerobic jointing compounds
EN 751-2 Sealing materials for metallic threaded joints in contact with 1st, 2nd and 3rd family gases and hot water - Part 2: Non-hardening jointing compounds
EN 751-3 Sealing materials for metallic threaded joints in contact with 1st, 2nd and 3rd family gases and hot water - Part 3: Unsintered PTFE tapes and PTFE strings*， 2023-12-13 Update
ISO 6957 Copper alloys; ammonia test for stress corrosion resistance
NF M88-738:2015 history
2015NF M88-738:2015 LPG equipment and accessories - Pressure relief valves for LPG pressure vessels - Ancillary equipment