30 GB 5100-1994 钢质焊接气瓶 Welded steel gas cylinders
31 GB/T 5140-1985 叉车 挂钩型货叉 术语 Fork lift trucks--Hook-on type fork arms--Vocabulary
32 GB/T 5141-1985 平衡重式叉车 稳定性 基本试验 Counter balanced lift trucks--Stability--Basic tests
33 GB/T 5142-1985 前移式和插腿式叉车 稳定性试验 Reach and straddle fork lift trucks--Stability tests
34 GB 5143-1985 高起升车辆护顶架 技术要求和试验方法 High-lift rider trucks--Overhead guards--Specification and testing
35 GB/T 5182-1996 叉车 货叉 技术要求和试验 Fork-lift trucks--Fork arms--Technical characteristics and testing
36 GB/T 5183-1985 叉车货叉的尺寸 Fork lift trucks--Fork arms--Dimensions
37 GB/T 5184-1996 叉车 挂钩型货叉和货叉架 安装尺寸 Fork-lift trucks--Hook-on type fork arms and fork arm carriages--Mounting dimensions
38 GB/T 5621-1985 凿岩机械与气动工具性能试验方法 Test methods of performance for rock drilling machines and pneumatic tools
39 GB/T 5656-1994 离心泵技术条件(II类) Technical specifications for centrifugal pumps--Class II
40 GB/T 5657-1995 离心泵技术条件(Ⅲ类) Technical specifications for centrifugal pumps--Class Ⅲ