QC/T 201-2017Dimensions of polyamide tubing connectors for automotive air brake systems (English PDF)
汽车气制动用尼龙管接头尺寸
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Issued by
MIIT
Level / Type
Industry · Recommended
Issue date
January 9, 2017
Implementation date
July 1, 2017
Scope
QC/T 201-2017 is the English-translated version of 汽车气制动用尼龙管接头尺寸.
QC/T 201-2017 is the Chinese automotive industry standard fixing the types, dimension series and marking of the polyamide tubing connectors used in automotive air brake systems.
It defines the tubing, the connector made up of union nut, cutting ferrule and bushing, and the connection bodies such as straight, elbow, three-way and multi-way joints.
An assembly relationship diagram is followed by the structure and dimensions of each component, including roughness requirements and circle runout of the sealing cone.
Compared with the previous edition it renames the standard, revises several ferrule and bushing sizes and adds a marking method. Brake system and fitting suppliers use it to keep connectors interchangeable.
It replaces QC/T 201-1995. Issued on 9 January 2017, it has applied since 1 July 2017.
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Document preview — QC/T 201-2017
National Standard of the People's Republic of China
- Replacing
- QC/T 201-1995
Issued by: Ministry of Industry and Information Technology of the People's Republic of China
Contents
- Announcement
- Foreword
- 1 Scope
- 2 Terms and Definitions
- 3 Assembly Relationship Schematic Diagram
- 4 Structure and Dimension
- 5 Marking
- 262 QC/T 1059-2017
Foreword
This Standard was drafted as per the rules specified in GB/T 1.1-2009 Directives for Standardization - Part 1: Structure and Drafting of Standards.
This Standard replaced QC/T 201-1995 Dimensions of Thermoplastic Tubing Connectors for Automotive Air Brake Systems. Compared with QC/T 201-1995, this Standard has the major technical changes as follows:
--- Modify the standard name;
--- Modify the definitions of the tubing connection body (see 2.3 of this Edition; 2.3 of 1995 Edition);
--- Modify the roughness requirements of union nut (see Figure 2 of this Edition;
--- Modify the roughness requirements of cutting ferrule; and add circle runout requirements of the sealing cone (see Figure 3 of this Edition; Figure 3 of 1995 Edition);
--- Modify some dimensions of the cutting ferrule size series (see Table 2 of this Edition; Table 2 of 1995 Edition);
--- Modify the roughness requirements of bushing and the fillet tolerance value (see Figure 4 of this Edition; Figure 4 of 1995 Edition);
--- Modify some dimensions of the bushing size series (see Table 3 of this Edition;
1 Scope
This Standard specifies the type, dimension series, marking method of the polyamide tubing connectors for automotive air brake systems.
This Standard is applicable to the polyamide tubing connectors for automotive air brake systems.
2 Terms and Definitions
For the purpose of this Standard, the following terms and definitions apply.
2.1 Tubing
The polyamide tube with certain length and without any connecting piece.
2.2 Connector
The general term for connecting components such as union nut, cutting ferrule, bushing, etc., which together form an assembly with the tube.
2.3 Connection body
The connecting components such as straight joint, elbow joint, three-way joint, multi-way joint, which are used together with the connector.
3 Assembly Relationship Schematic Diagram
The assembly relationship schematic diagram can refer to Figure 1. […]
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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 16 pages — is available in the English PDF.
Similar standards
Editions of QC/T 201
| Edition | Title | Revision | Status |
|---|---|---|---|
| QC/T 201-2017 | Dimensions of polyamide tubing connectors for automotive air brake systems | current edition | Current |
| QC/T 201-1995 | Dimensions of polyamide tubing connectors for automotive air brake systems | previous edition | Superseded |
This page sells the current edition, QC/T 201-2017. Earlier editions are listed for reference only.
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