GB/T 41676-2022 (English Version) PDF

Standard No.: GB/T 41676-2022
Language: Chinese, Available in English version
Release Date: 2022
Published By: General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
Latest: GB/T 41676-2022

Scope: This document specifies the general requirements, static strength, fatigue strength, compliance verification and usage information for forged steel hooks of cranes. This document applies to the following hook components and hook types: ---Any type of forged steel hook body; ---Machine hook shank of thread/nut structure. Note 1: In principle, this document also applies to hooks of other shank types and the determination and use of relevant stress concentration factors for hook shank structures. This document does not apply to laminated hooks consisting of one or more rolled steel sheets. This document applies to hooks whose ultimate tensile strength of the material does not exceed 800N/mm2 and the ultimate yield strength does not exceed 620N/mm2. The following are major hazardous situations and hazardous events that may cause harm to personnel during normal use and foreseeable misuse. Chapters 4 to 8 stipulate the relevant requirements for reducing or eliminating the risks related to them: ——Exceeding the strength limit ( Yield, tension and fatigue); --- Exceeding the temperature limit of the material; --- Accidentally unloading the load from the hook. Note 2: This document is only applicable to the limit state design method in accordance with GB/T 22437.1.

GB/T 41676-2022 Referenced Document

GB/T 10051.2 Lifting hooks.Part 2:Technical conditions for forged hooks
GB/T 10051.4 Lifting hooks.Part 4:Blanks of shank hook with point
GB/T 10051.6 Lifting hooks.Part 6:Blanks of ramshorn shank hooks
GB/T 16825.1 Metallic materials—Calibration and verification of static uniaxial testing machines—Part1:Tension/compression testing machines—Calibration and verification of the force-measuring system
GB/T 197 General purpose metric screw threads—Tolerances
GB/T 20863.1 Cranes—Classification—Part 1:General
GB/T 22437.1 Cranes—Design principles for loads and load combinations—Part 1：General
GB/T 228.1 Metallic materials—Tensile testing—Part 1: Method of test at room temperature
GB/T 228.3 Metallic materials—Tensile testing—Part 3: Method of test at low temperature
GB/T 229 Metallic materials—Charpy pendulum impact test method
GB/T 3505 Geometrical Product Specifications(GPS).Surface texture:Profile method.Terms,definitions and surface texture parameters
GB/T 37400.15-2019 Heavy mechanical general technical specification—Part 15：Nondestructive test of steel forgings
GB/T 3808 Verification of pendulum-type impact testing machines
GB/T 6974.1 Granes.Vocabulary.Part 1:General
ISO 643 Steels — Micrographic determination of the apparent grain size

2022 GB/T 41676-2022 Cranes—General design—Limit states and proof of competence of forged steel hooks