QC/T 1178-2022Motor vehicles and towed vehicles - Pneumatic braking systems - Tapped holes and pipe fittings (English PDF)
汽车和挂车 气压制动系统 螺纹孔和管接头
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Issued by
MIIT
Level / Type
Industry · Recommended
Issue date
April 8, 2022
Implementation date
October 1, 2022
Scope
QC/T 1178-2022 is the English-translated version of 汽车和挂车 气压制动系统 螺纹孔和管接头.
QC/T 1178-2022 is the Chinese automotive industry standard on the threaded connection points of pneumatic braking systems in motor vehicles and towed vehicles.
It fixes the main types and dimensions of the tapped holes machined into brake components and of the male fittings screwed into them, starting from straight threads with their own figures and dimension tables.
The document applies to pneumatic braking systems working at air pressures below 2 MPa. It contains no normative references and no terms of its own, so the dimensional tables stand on their own.
Makers of air brake components and pipe fittings use it so that ports and fittings from different suppliers match. Issued on 8 April 2022, it has applied since 1 October 2022.
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Document preview — QC/T 1178-2022
National Standard of the People's Republic of China
Issued by: Ministry of Industry and Information Technology of the People's Republic of China
Contents
- Foreword6
- 1 Scope7
- 2 Normative references7
- 3 Terms and definitions7
- 4 Types and dimensions7
1 Scope
This document specifies the main types and dimensions for tapped and male fitting in the matrix of pneumatic braking system of motor vehicle and towed vehicle.
This document applies to the pneumatic braking system of motor vehicles and towed vehicles with air pressure below 2 MPa.
2 Normative references
There are no normative references in this document.
3 Terms and definitions
No terms and definitions need to be defined in this document.
4 Types and dimensions
4.1 Straight thread
See Figure 1 for the types of straight tapped, and Table 1 for the dimensions. See Figure 2 for the types of male fitting, and Table 2 for the dimensions. […]
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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
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