Standard No.:	JB/T 4207.2-1999
English Name:	Latch kits of hooks used for hand-operated hoisting appliances
Chinese Name:	手动起重设备用吊钩闭锁装置
Chinese Classification:	J80    Hoisting machinery
Professional Classification:	JB    Professional Standard - Machinery
ICS Classification:	53.020.30 53.020.30    Accessories for lifting equipment 53.020.30
Issued by:	QGQZJJXBWH
Issued on:	1999-6-28
Implemented on:	2000-1-1
Status:	superseded
Superseded by:	JB/T 4207-2020 Hooks for manually operated lifting equipment with latch
Superseded on:	2021-4-1
Superseding:	ZB J80004-1987
Language:	English
File Format:	PDF
Word Count:	3000 words
Price(USD):	264.00
Delivery:	via email in 1~3 business day

JB/T 4207.2-1999 本标准是对 ZB J80 004-87《手动起重设备用吊钩闭锁装置》的修订。修订时仅按有关规定作了编辑性修改，主要技术内容没有改变。 本标准规定的闭锁装置适用于 JB/T 4207.1-1999《手动起重设备用吊钩》中带凸耳的吊钩，其作用中避免索具的意外脱落，并可直观地反映钩口的变形。 本标准于 1988 年 4 月 16 日首次发布。