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GB/T 4307-2025Lifting hooks - Vocabulary (English PDF)

起重吊钩术语

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Issued by

State Administration for Market Regulation, China National Standardization Administration

Level / Type

National · Recommended

Issue date

May 30, 2025

Implementation date

December 1, 2025

Scope

GB/T 4307-2025 is the English-translated version of 起重吊钩术语.

GB/T 4307-2025 is the Chinese national vocabulary for the hooks fitted to lifting appliances.

It names and defines each type and illustrates it with a figure: single, double and four-point hooks on a cylindrical shank, with or without a safety latch or a pin hole, C-shaped hooks, eye hooks, self-locking hooks, plate hooks, clevis hooks including one with a chain slot, swivel hooks and laminated hooks.

A further clause sets out the classification of lifting hooks, and an index lists the terms. Five hook types in common use were added in this edition, while the cast eye hooks and cast clevis hooks of the previous one were dropped.

Crane and rigging makers, inspection bodies and the drafters of other hook standards use it for common wording. It replaces GB/T 4307-2005, was issued on 30 May 2025 and applies from 1 December 2025.

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Document preview — GB/T 4307-2025

National Standard of the People's Republic of China

ICS: 53.020.30
Classification: J 80

Issued by: State Administration for Market Regulation, China National Standardization Administration

Preface
1 Scope
2 Normative references
3 Terms and Definitions
4 Categories
References
Index

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1: Structure and drafting rules for standardization documents" Drafting.

This document replaces GB/T 4307-2005 "Terms of Lifting Hooks". Compared with GB/T 4307-2005, except for structural adjustment and editing, In addition to the changes in performance, the main technical changes are as follows.

--- Increased the scope of application (see Chapter 1);

--- Added the definition of various types of hooks (see Chapter 3);

--- Added five commonly used hook types (see 3.5, 3.6, 3.7, 3.8 and 3.20);

--- Changed the classification of lifting hooks (see Chapter 4, Chapter 2 of the 2005 edition), and deleted the eyelet casting hooks and U-shaped clips Casting hooks (see Chapter 2 of the 2005 edition).

1 Scope

This document defines the terms and definitions for various types of hooks used on lifting equipment.

This document applies to all types of hooks used on lifting equipment.

2 Normative references

This document has no normative references.

3 Terms and definitions

3.1 Straight handle single hook shank hook with point

Single point hook with cylindrical shank.

Note: See Figure 1 for an example diagram.

3.2 A single-point hook with a cylindrical hook handle and a locking device

Note: See Figure 2 for an example diagram.

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 30 pages — is available in the English PDF.

Referenced standards

Cited by

GB/T 40495-2021Ships and marine technology - Loose gear for marine lifting appliances on ships - General technical requirement

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