GB/T 21938-2008 English Version, GB/T 21938-2008 Earth-moving machinery - Hydraulic excavator and backhoe loader boom-lowering control device - Requirements and tests (English Version)

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Position: Chinese Standard in English/GB/T 21938-2008

GB/T 21938-2008 Earth-moving machinery - Hydraulic excavator and backhoe loader boom-lowering control device - Requirements and tests (English Version)
Standard No.:	GB/T 21938-2008	Status:	superseded remind me the status change Email:
Target Language:	English	File Format:	PDF
Word Count:	3000 words	Translation Price(USD):	70.0 remind me the price change Email:
Implemented on:	2009-1-1	Delivery:	via email in 1~3 business day

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Standard No.:	GB/T 21938-2008
English Name:	Earth-moving machinery - Hydraulic excavator and backhoe loader boom-lowering control device - Requirements and tests
Chinese Name:	土方机械液压挖掘机和挖掘装载机动臂下降控制装置要求和试验
Chinese Classification:	P97 Architectural engineering construction machinery
Professional Classification:	GB National Standard
Source Content Issued by:	AQSIQ; SAC
Issued on:	2008-6-3
Implemented on:	2009-1-1
Status:	superseded
Superseded by:	GB/T 21938-2021
Superseded on:	2022-7-1
Superseding:	JG/T 5084-1996 Hydraulic excavator and backhoe loader boom lowering control device―Requirements and tests
Target Language:	English
File Format:	PDF
Word Count:	3000 words
Translation Price(USD):	70.0
Delivery:	via email in 1~3 business day

GB/T 21938-2008 is referred in:

* GB 25684.1-2010 Earth-moving machinery - Safety - Part 1: General requirements
* GB 25684.5-2010 Earth-moving machinery - Safety - Part 5: Requirements for hydraulic excavators

Standard

GB/T 21938-2008 Earth-moving machinery - Hydraulic excavator and backhoe loader boom-lowering control device - Requirements and tests (English Version)
Standard No.	GB/T 21938-2008
Status	superseded
Language	English
File Format	PDF
Word Count	3000 words
Price(USD)	70.0
Implemented on	2009-1-1
Delivery	via email in 1~3 business day

Detail of GB/T 21938-2008

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Professional Classification

ICS Classification

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Abolished on

Superseding

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Introduction of GB/T 21938-2008

本标准自实施之日起，JG/T 5084-1996《液压挖掘机和挖掘装载机动臂下降控制装置　性能要求和试验方法》同时废止。
本标准为首次发布。本标准规定了动臂下降控制装置的性能要求和试验方法，该装置安装在动臂提升液压缸上，用于在液压管路发生故障或破裂时控制动臂的下降速度。
本标准适用于液压挖掘机和挖掘装载机的反铲装置搬运和提升物料作业时的动臂下降控制装置。

Contents of GB/T 21938-2008

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