Standard No.:	JB/T 9742-1999
English Name:	Internal combustion engines -- Gray iron cylinder gead and cylinder block castings -- Specifications
Chinese Name:	内燃机 灰铸铁气缸盖和机体铸件 技术条件
Chinese Classification:	J92    Engine body and moving parts
Professional Classification:	JB    Professional Standard - Machinery
Source Content Issued by:	National Technical Committee on Internal Combustion Engine Standardization
Issued on:	1999-09-17
Implemented on:	2000-1-1
Status:	superseded
Superseded by:	JB/T 9753.3-2011 Internal combustion engines — Cylinder heads and cylinder blocks —Part 3: Cray iron cylinder head and cylinder block castings — Specifications
Superseded on:	2011-8-1
Abolished on:	2011-08-01
Superseding:	NJ 308-1986
Target Language:	English
File Format:	PDF
Word Count:	11000 words
Translation Price(USD):	384.0
Delivery:	via email in 1~5 business day

JB/T 9742-1999 本标准是对 NJ 308-86《灰铸铁气缸盖和机体铸件 技术条件》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。 本标准规定了内燃机灰铸铁气缸盖和机体铸件的技术要求，检验方法，检验规则和标志、包装、运输、贮存。 本标准适用于气缸直径小于或等于 200mm 的内燃机非合金和低合金灰铸铁的气缸盖和机体铸件，其他机型的同类铸件也可参照使用。 本标准于 1984 年首次发布。