DIN 11852 2009-05 PDF

Full title and description

STB DIN 11852:2009-05 — Fittings for the food and chemical industries — Fittings of stainless steel — Tees, bends and reducers for welding. This document specifies dimensional, material and marking requirements for stainless-steel tees, elbows (bends) and reducing pieces intended to be welded into piping systems used in the food and chemical industries (nominal sizes DN 10 to DN 200).

Abstract

DIN 11852:2009-05 defines geometry, nominal sizes, tolerances, identification/marking and basic material requirements for welded stainless-steel fittings (tees, bends, reducers) intended for hygienic and industrial process piping in food and chemical applications. The standard provides dimensional tables and guidance needed to ensure interchangeability and correct assembly of welded fittings within DN 10–DN 200 pipe systems.

General information

• Status: Withdrawn (historical edition; replaced by later harmonized/recommended standards).
• Publication date: May 2009 (2009-05).
• Publisher: Deutsches Institut für Normung (DIN).
• ICS / categories: 23.040.40 — Metal fittings (fluid systems and pipeline components).
• Edition / version: Edition: 2009-05 (DIN 11852:2009-05).
• Number of pages: 16 pages (published PDF edition).

Scope

The standard covers stainless-steel tees, 90° and 180° bends, and reducing pieces manufactured for welding onto process pipelines used in the food and chemical industries. It applies to fittings for nominal diameters DN 10 up to DN 200 and addresses the dimensional series, tolerances, designation and marking so that fittings are compatible with corresponding pipe ranges and welding practices used in hygienic and chemical processing.

Key topics and requirements

• Dimensional tables and centre-to-end/face-to-end dimensions for tees, bends and reducers (DN 10–DN 200).
• Nominal size series and tolerance classes to ensure interchangeability with standard piping.
• Material specification: stainless steels suitable for food/chemical service and welding.
• Welding preparation and fit-up geometry for butt-welding to pipes.
• Identification and marking requirements for traceability (designation, size, material batch where applicable).
• Acceptance criteria and general workmanship expectations for hygienic process fittings.

Typical use and users

Used by designers, fabricators and installers of hygienic process piping in the food, beverage, dairy, pharmaceutical and fine-chemical industries. Typical users include pipework engineers, equipment manufacturers, stainless‑steel fabricators, QA/QC inspectors, procurement specialists and standards librarians looking for dimensional and interchangeability data for welded sanitary fittings.

Related standards

Commonly referenced and related documents include earlier and parallel DIN series and international hygienic-fitting standards such as DIN 11850 (stainless-steel tubes), DIN 11851 (threaded fittings for food/chemical applications), ISO/EN standards for hygienic fittings, as well as sector-specific documents (for example 3-A sanitary standards, ASME BPE and later harmonized European standards). Users should note that DIN 11852:2009-05 has been superseded in practice by more recent EN/DIN EN documents (users are advised to consult the current EN/DIN EN standards for the up-to-date normative requirements).

Keywords

stainless steel fittings, hygienic fittings, tees, bends, elbows, reducers, welded fittings, food industry, chemical industry, DN 10–DN 200, interchangeability, DIN 11852

FAQ

Q: What is this standard?

A: DIN 11852:2009-05 is a German national standard specifying stainless-steel tees, bends and reducers for welding into piping systems used in the food and chemical industries (nominal sizes DN 10–DN 200).

Q: What does it cover?

A: It covers dimensional data, tolerances, designation/marking and basic material/workmanship expectations for welded stainless-steel tees, elbows (bends) and reducing pieces to ensure mechanical and assembly compatibility in hygienic and chemical process piping.

Q: Who typically uses it?

A: Pipework designers, stainless‑steel fabricators, equipment manufacturers, quality/inspection teams and procurement specialists in food, beverage, dairy, pharmaceutical and chemical processing industries.

Q: Is it current or superseded?

A: The 2009-05 edition is published as a historical/withdrawn national document in DIN collections and users are advised to use the currently recommended/harmonized EN/DIN EN standards for normative requirements; consult your national standards body or the latest EN documents for the up-to-date, normative replacement.

Q: Is it part of a series?

A: Yes. DIN 11852 is part of a family of DIN standards covering stainless-steel tubing and fittings for food and chemical industries (for example DIN 11850, DIN 11851 and related documents addressing tubes, threaded fittings and sanitary connections).

Q: What are the key keywords?

A: Stainless steel, fittings, tees, bends, reducers, welded fittings, food industry, chemical industry, hygienic piping, DN 10–DN 200, DIN 11852.