GB/T 25852-2017Forged steel lifting components of grade 8 (English PDF)

1 Scope

This standard specifies the basic requirements for the eight-stage steel forged lifting parts (hereinafter referred to as "parts") with a maximum working load of not more than 63t.

It is mainly used for the following lifting sling.

--- GB/T 20652 and GB/T 25853 provisions of the hanging chain;

--- ISO 7531 in the provisions of the wire rope sling;

--- knitting sling.

This standard does not apply manual forged parts, welded links and other welded parts.

2 normative reference documents

The following documents are indispensable for the application of this document. For dated references, only the dated edition applies to this article

Pieces. For undated references, the latest edition (including all modifications) applies to this document.

ISO 643 steel apparent grain size of the micro-metallographic determination (Steels-Micrographicdeterminationofthe apparentgrainsize

ISO 7500-1 Metallic materials - Tests for static uniaxial testing machines - Part 1. Tensile force systems for tension and/or pressure testing machines (Metalicmaterials-Verificationofstaticuniaxialtestingmachines-Part 1. Tension / compressiontestingmachines-Verification andcalibrationoftheforce-measuringsystem)

EN 10025-2..2004 Hot rolled products of structural steels - Part 2. Non-alloy structural steel delivery conditions (Hotroledproducts ofstructuralsteels-Part 2. Technicaldeliveryconditionsfornon-aloystructuralsteels

EN10228-1 Nondestructive testing of forged steel parts - Part 1. Non-destructivetestingofsteel forgings-Part 1. Magneticparticalinspection)

EN10228-2 Nondestructive testing of forged steel parts - Part 2. Non-destructing test forgings-Part 2. Penetranttesting)

3 terms and definitions

The following terms and definitions apply to this document.