20 GB/T 3264-1989 單張紙平版膠印機 技術條件 Specification for sheet-fed planographic offset press
21 GB/T 3811-1983 起重機設計規范 Design rules for cranes
22 GB/T 4307-1984 起重吊鉤 名詞術語 Lifting hooks--Nomenclature
23 GB/T 4652-1984 雙臂式裝載機 試驗方法 Method for testing the gathering arm loaders
24 GB/T 4774-1984 離心機和過濾機 名詞術語 Terminology of centrifuge and filter
25 GB/T 4975-1995 容積式壓縮機術語 總則 Displacement compressors vocabulary--General
26 GB/T 4976-1985 壓縮機分類 Compressors--Classification
27 GB/T 4980-1985 容積式壓縮機噪聲聲功率級的測定--工程法 Determination of sound power level for noise emitted by displacement compressors--Engineering method
28 GB/T 4983-1985 擰緊型真空快卸法蘭 Vacuum technology screwed type quick release flange
29 GB 5099-1994 鋼質無縫氣瓶 Seamless steel gas cylinders
30 GB 5100-1994 鋼質焊接氣瓶 Welded steel gas cylinders
31 GB/T 5140-1985 叉車 掛鉤型貨叉 術語 Fork lift trucks--Hook-on type fork arms--Vocabulary
32 GB/T 5141-1985 平衡重式叉車 穩定性 基本試驗 Counter balanced lift trucks--Stability--Basic tests
33 GB/T 5142-1985 前移式和插腿式叉車 穩定性試驗 Reach and straddle fork lift trucks--Stability tests
34 GB 5143-1985 高起升車輛護頂架 技術要求和試驗方法 High-lift rider trucks--Overhead guards--Specification and testing
35 GB/T 5182-1996 叉車 貨叉 技術要求和試驗 Fork-lift trucks--Fork arms--Technical characteristics and testing
36 GB/T 5183-1985 叉車貨叉的尺寸 Fork lift trucks--Fork arms--Dimensions
37 GB/T 5184-1996 叉車 掛鉤型貨叉和貨叉架 安裝尺寸 Fork-lift trucks--Hook-on type fork arms and fork arm carriages--Mounting dimensions
38 GB/T 5621-1985 鑿巖機械與氣動工具性能試驗方法 Test methods of performance for rock drilling machines and pneumatic tools
39 GB/T 5656-1994 離心泵技術條件(II類) Technical specifications for centrifugal pumps--Class II
40 GB/T 5657-1995 離心泵技術條件(Ⅲ類) Technical specifications for centrifugal pumps--Class Ⅲ

41 GB/T 5660-1985 軸向吸入離心泵底座尺寸和安裝尺寸 End-suction centrifugal pumps--Baseplate and installation dimensions