DIN EN 1092-1 A1 E 2022-12 PDF

Full title and description

STB DIN EN 1092-1 A1 E 2022-12 — German adoption/amendment of EN 1092-1:2018, published as DIN EN 1092-1/A1:2022 (Amendment A1, issued 1 December 2022). The document is an amendment to the European standard for circular steel flanges (PN-designated) and updates normative references, tables, figures and several annexes of EN 1092-1:2018.

Abstract

This amendment (A1:2022) to EN 1092-1:2018 provides corrigenda and technical updates to the steel circular‑flange series (PN 2,5 up to PN 400, DN 10 up to DN 4000). Changes affect normative references, selected dimension and mass tables, several illustrative figures and a number of informative/normative annexes to ensure alignment with industry practice and related standards. The amendment is published in German and English as DIN EN 1092-1/A1:2022.

General information

• Status: Amendment A1 to DIN EN 1092-1:2018 (published/issued 1 December 2022).
• Publication date: 01 December 2022.
• Publisher: Deutsches Institut für Normung (DIN) — German version / adoption of EN 1092-1:2018 with Amendment A1.
• ICS / categories: 23.040.60 (Flanges, couplings and joints).
• Edition / version: DIN EN 1092-1/A1:2022 (Amendment to EN 1092-1:2018).
• Number of pages: Listed variably by distributor — amendment listings commonly show between 33 and 66 pages depending on format (full national publication vs. amendment-only sheet).

Scope

This document (A1) amends EN 1092-1:2018, the European standard that specifies requirements for circular steel flanges designated by PN covering nominal pressures PN 2,5 to PN 400 and nominal sizes DN 10 to DN 4000. The standard series defines flange types, jointing faces, dimensions and tolerances, boltings and bolt‑circle data, marking, material and pressure/temperature considerations for steel flanges used with pipes, valves, fittings and accessories. The A1 amendment revises selected tables, figures and annexes to update dimensions, references and guidance.

Key topics and requirements

• Definition of PN‑designated flange series and corresponding nominal sizes (DN range and PN classes).
• Standardized flange types and jointing faces (flat face, raised face, tongue & groove, etc.).
• Dimensional tables and manufacturing tolerances for mating flanges, bolt circles and bolt holes (updates in amendment affect selected tables).
• Surface finish, facing roughness and gasket face requirements for reliable sealing.
• Marking, material designation and certification requirements consistent with common EN/DIN material and inspection standards.
• Pressure–temperature (P–T) ratings and PN class guidance (note: allowable working pressure depends on material and temperature; consult P–T tables).
• Amendment-specific updates: modifications to tables (e.g., Tables 7 and 9), multiple figures (Figures 5–10) and annexes C, D, G and I as listed in the amendment notification.

Typical use and users

Engineers, piping designers, valve and flange manufacturers, fabricators, procurement specialists, inspection bodies and EPC contractors use EN 1092-1 and its amendments to specify, produce and verify steel flanges for industrial piping systems (water, oil & gas, chemical, power, process plants). The standard is widely adopted across European supply chains and referenced in equipment specifications and conformity assessments.

Related standards

EN 1092 series (parts 1–4) — Part 1: Steel flanges (EN 1092-1:2018, amended by A1:2022); Part 2: Cast iron flanges; Part 3: Copper alloy flanges; Part 4: Aluminium alloy flanges. Related material and inspection standards include EN material specifications and EN 10204 inspection documents; national adoptions appear as DIN EN 1092-1/A1, BS EN 1092-1/A1, ÖNORM EN 1092-1/A1, etc.

Keywords

flanges; circular flanges; PN designation; DN sizes; steel flanges; DIN EN 1092-1; EN 1092-1:2018; A1:2022; amendment; raised face; flat face; bolt circle; P‑T ratings; gasket face.

FAQ

Q: What is this standard?

A: DIN EN 1092-1/A1:2022 is the German publication of Amendment A1 (December 1, 2022) to EN 1092-1:2018 — the European standard for circular steel flanges designated by PN. It updates and corrects selected parts of the 2018 standard.

Q: What does it cover?

A: It covers definitions, flange types and jointing faces, dimensional tables and tolerances, bolt and bolt‑circle data, marking, materials and pressure–temperature guidance for steel flanges from PN 2,5 up to PN 400 and DN 10 up to DN 4000; the A1 amendment revises specific tables, figures and annexes.

Q: Who typically uses it?

A: Piping and mechanical engineers, flange and valve manufacturers, fabricators, procurement and quality/inspection personnel, and regulatory or conformity assessment bodies working on process, utility and industrial piping systems.

Q: Is it current or superseded?

A: The A1 document is an amendment to the current EN 1092-1:2018 edition; it was published 1 December 2022 as an Amendment (A1). For the absolute current legal/harmonised status in your jurisdiction (e.g., harmonisation under PED or inclusion in national catalogs), check your national standards body or official harmonization lists.

Q: Is it part of a series?

A: Yes — EN 1092 is a multi‑part European standard series covering flanges of different materials: Part 1 (steel), Part 2 (cast iron), Part 3 (copper alloys), Part 4 (aluminium alloys). The A1 item amends Part 1.

Q: What are the key keywords?

A: flanges; EN 1092-1; DIN EN 1092-1/A1:2022; PN; DN; steel flanges; raised face; flat face; bolt circle; P‑T ratings.