ISO 7005-2-1988 PDF

Full title and description

ISO 7005-2:1988 — Metallic flanges — Part 2: Cast iron flanges. Specifies requirements for circular cast-iron flanges (grey, malleable and ductile) of series 1 and 2, including dimensional characteristics and guidance on tolerances; annexes provide dimensional-tolerance guidance and a bibliography.

Abstract

This part of ISO 7005, together with parts 1 and 3, cancels and replaces earlier ISO documents (ISO 2084:1974, ISO 2229:1973 and ISO 2441:1975). It lays down types, dimensions, tolerances and general requirements for circular cast‑iron flanges (series 1 and 2), and includes informative Annex A (guidance on tolerances) and Annex B (bibliography).

General information

• Status: Published / current (International Standard; confirmed in periodic reviews).
• Publication date: 8 December 1988 (Edition 1, 1988-12).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 23.040.60 — Flanges, couplings and joints.
• Edition / version: Edition 1 (1988).
• Number of pages: 34.

Scope

ISO 7005-2:1988 applies to circular cast‑iron flanges manufactured from grey, malleable and ductile cast iron, arranged in two flange series (series 1 and series 2). The standard specifies flange types, key dimensions, dimensional tolerances (with guidance in Annex A), bolt hole arrangements and related requirements necessary for interchangeability and correct jointing in piping systems. It was issued together with ISO 7005-1 and ISO 7005-3 to provide a harmonized set of requirements for metallic flanges.

Key topics and requirements

• Material categories covered: grey cast iron, malleable cast iron and ductile (spheroidal graphite) cast iron.
• Definition of flange types and faces appropriate for cast‑iron applications (series 1 and 2).
• Dimensional specifications and tolerances for bolt circles, bolt holes, flange diameters and thicknesses; guidance on tolerances in Annex A.
• Reference to normative materials and casting standards (examples: ISO 1083 and recognized material specifications; normative references listed in the publication).
• Marking, inspection and bibliography guidance provided in informative annexes.

Typical use and users

Primary users include piping and valve designers, foundries producing cast‑iron flanges, manufacturers of pipe fittings, procurement/specification engineers, inspection bodies and standards committees. Typical applications are water and wastewater systems, low- to medium-pressure piping where cast‑iron flanges remain appropriate, and any project requiring standardized flange dimensions and interchangeability for cast‑iron components.

Related standards

ISO 7005 is a multipart series: Part 1 deals with steel flanges (ISO 7005-1) and Part 3 with copper‑alloy and composite flanges (ISO 7005-3). ISO 7005-2 cancels and replaces older documents ISO 2084:1974, ISO 2229:1973 and ISO 2441:1975. Regional and national equivalents (or similar documents) exist (for example various EN/BS standards covering flange dimensions and jointing).

Keywords

ISO 7005-2, metallic flanges, cast iron flanges, grey cast iron, malleable cast iron, ductile cast iron, series 1, series 2, flange dimensions, tolerances, ISO/TC 5/SC 10.

FAQ

Q: What is this standard?

A: ISO 7005-2:1988 is the ISO International Standard that specifies requirements for circular cast‑iron flanges (grey, malleable and ductile) of series 1 and 2.

Q: What does it cover?

A: It covers flange types, key dimensions, bolt hole arrangements, dimensional tolerances (with guidance in Annex A), normative material references and informative bibliography — all aimed at ensuring interchangeability and correct jointing for cast‑iron flanges.

Q: Who typically uses it?

A: Design and specification engineers, foundries and manufacturers of flanges and pipe fittings, procurement professionals, inspection and QA personnel, and standards committees concerned with pipe‑flange interchangeability.

Q: Is it current or superseded?

A: ISO’s status records indicate ISO 7005-2:1988 is a published International Standard that has been subject to periodic confirmation; the 1988 edition remains the published text and has been confirmed in ISO review cycles. Users should check the ISO catalogue or their national standards body for the very latest status before relying on the standard for regulatory or procurement decisions.

Q: Is it part of a series?

A: Yes — ISO 7005 is a multipart series. ISO 7005-1 covers steel flanges and ISO 7005-3 covers copper‑alloy and composite flanges; the three parts together replace several earlier ISO flange standards.

Q: What are the key keywords?

A: Cast iron flanges, metallic flanges, ISO 7005, series 1, series 2, flange dimensions, tolerances, grey iron, malleable iron, ductile iron.