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GB/T 40565.2-2025Connections for hydraulic fluid power - Quick-action couplings - Part 2: Flush-face type (English PDF)

液压传动连接快换接头第2部分：平面型

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

March 28, 2025

Implementation date

March 28, 2025

Scope

GB/T 40565.2-2025 is the English-translated version of 液压传动连接快换接头第2部分：平面型.

Quick-action couplings let hydraulic lines be connected and disconnected without tools, and this part of the series deals with the flush-face type, in which the mating faces are flat. It belongs to the family of standards on connections for hydraulic fluid power.

The document is aimed at manufacturers of hydraulic couplings, designers of hydraulic systems and mobile machinery, component distributors, and test laboratories. A common national standard for this coupling type supports interchangeability between suppliers and gives purchasers a clear reference when specifying parts for equipment such as construction machinery, agricultural machinery and industrial hydraulic systems.

The 2025 edition was issued on 28 March 2025 and takes effect on the same day, so it applies immediately. It replaces GB/T 40565.2-2021. It is a recommended national standard, meaning it is voluntary unless adopted in a contract or product specification. Manufacturers and buyers who reference the 2021 edition should confirm which edition their drawings and orders should now cite.

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Document preview — GB/T 40565.2-2025

National Standard of the People's Republic of China

ICS: 23.100.40
Classification: J 20
Replacing: GB/T 40565.2-2021

Issued by: State Administration for Market Regulation; Standardization Administration of China

Foreword
1 Scope
2 Normative references
3 Terms and definitions

Foreword

GB/T 40565.2-2025 is a recommended national standard (GB/T) of the People's Republic of China, issued on 28 March 2025 by the State Administration for Market Regulation and the Standardization Administration of China.

This edition replaces GB/T 40565.2-2021.

The document adopts an international standard (ISO or IEC).

It is under the responsibility of the China Machinery Industry Federation.

Classification: ICS 23.100.40; CCS J 20.

1 Scope

Remaining clauses in the full document

2 Normative references
3 Terms and definitions

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.

Editions of GB/T 40565.2

Edition	Title	Revision	Status
GB/T 40565.2-2025	Connections for hydraulic fluid power - Quick-action couplings - Part 2: Flush-face type	current edition	Current
GB/T 40565.2-2021	Connections for hydraulic fluid power - Quick-action couplings - Part 2: Flush-face type at 20 MPa to 31.5 MPa	previous edition	In force until 28 March 2025

This page sells the current edition, GB/T 40565.2-2025. Earlier editions are listed for reference only.

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