QC/T 764-2015 English PDF (QCT764-2015)

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QC/T 764-2015: Road vehicles. Hydraulic braking system. Simple flare pipes, tube tapped holes, male fittings and hose end fittings
QC/T 764-2015
AUTOMOBILE INDUSTRY STANDARD
OF THE PEOPLE’S REPUBLIC OF CHINA
ICS 43.040.40
T 24
Replacing QC/T 764-2006
Road vehicles - Hydraulic braking system -
Simple flare pipes, tube tapped holes,
male fittings and hose end fittings
ISSUED ON: APRIL 30, 2015
IMPLEMENTED ON: OCTOBER 01, 2015
Issued by: Ministry of Industry and Information Technology of PRC
Annex:
Numbers, standard names and initial implementation dates of 17
automotive industry standards
S/N Standard number Standard name Standard number being substituted
Initial
implementation date
(YYYY-MM-DD)
287 QC/T 991-2015
Passenger cars - Light
alloy wheels - 90°
impact test procedure
2015-10-01
288 QC/T 717-2015
Road vehicle – Wheels
- Requirements and
Measuring methods of
radial and lateral run-
out
QC/T 717-2004
ISO 16833:2006,
MOD
2015-10-01
289 QC/T 52-2015 Refuse collection vehicle QC/T 52-2000 2015-10-01
290 QC/T 652-2015 Suction-type sewer scavenger QC/T 652-2000 2015-10-01
291 QC/T 992-2015 Municipal emergency service vehicle 2015-10-01
292 QC/T 993-2015 Explosive transport vehicle 2015-10-01
293 QC/T 994-2015 Demountable tanker carrier 2015-10-01
294 QC/T 995-2015 Hydrostatic drive modular transporter 2015-10-01
295 QC/T 764-2015
Road vehicles -
Hydraulic braking
system - Simple flare
pipes, tube tapped
holes male fittings and
hose end fittings
QC/T 764-2006 2015-10-01
296 QC/T 239-2015
Specifications and
bench test methods for
commercial vehicle
service brake
QC/T 239-1997
QC/T 479-1999 2015-10-01
297 QC/T 996-2015
Specifications and
bench test methods of
automobile air dryer
2015-10-01
298 QC/T 997-2015
Passenger car full load
overall frame body
structure requirements
2015-10-01
299 QC/T 998-2015 The Technical Specification of 2015-10-01
Table of Contents
Announcement ... 2 
Foreword ... 7 
1 Scope ... 9 
2 Normative references ... 9 
3 Technical requirements ... 9 
Foreword
This standard was prepared in accordance with the rules given in GB/T 1.1 -
2009 “Directives for standardization - Part 1: Structure and drafting of
standards”.
This standard replaces QC/T 764-2006 “Motor vehicles - Hydraulic braking
systems - Pipes tapped holes male fittings and hose end fittings”. As compared
with QC/T 764-2006, the main technical changes are as follows:
- MODIFY the basic dimensions, limit deviations and rupture pressures of
some pipes (see Table 1; Table 1 of the 2006 version);
- MODIFY the yield strength of the metal pipe material from 200 MPa to 180
MPa (see Table 2; Table 3 of the 2006 version);
- For the salt spray test standard, USE GB/T 10125-2012 to replace GB
2423.17 (see 3.1.3 and 3.4.2; 3.4 of the 2006 version);
- MODIFY the surface treatment requirements for metal pipes and threaded
joints (see 3.1.3 and 3.4.2; 3.4 and 5.2 of the 2006 version);
- MODIFY the tolerance of D3 (see Table 3; Table 2 of the 2006 version);
- ADD two new types of tapped hole openings (see Figure 2b and Figure 3);
- MODIFY the tolerance of D7 and the dimensions of L1; ADD the dimensions
of D10; DELETE the dimensions of L7 (see Table 4; Table 4 of the 2006
version);
- MODIFY the dimensions of the opening of wrench for tapped fittings (see
Table 5; Table 5 of the 2006 version);
- MODIFY the minimum rupture torque of the M10 × 1 and M12 × 1 tapped
fittings (see Table 6; Table 6 of the 2006 version).
This standard was drafted by the redrafting method and with reference to ISO
4038:1996 “Road vehicles - Hydraulic braking system - Simple flare pipes, tube
tapped holes, male fittings and hose end fittings”. The degree of conformity with
ISO 4038 is not equivalent.
Please note that this standard may involve patents. The issuing organization of
this standard does not assume responsibility for identifying these patents.
This standard was proposed by and shall be under the jurisdiction of the
National Automotive Standardization Technical Committee (SAC/TC 114).
Road vehicles - Hydraulic braking system -
Simple flare pipes, tube tapped holes,
male fittings and hose end fittings
1 Scope
This standard specifies the basic dimensions, performance, material
requirements for simple flare pipes (hereinafter referred to as “metal pipes”),
tube tapped holes, male fittings and hose end fittings for hydraulic braking
system of road vehicles.
This standard applies to road vehicles which are equipped with hydraulic
braking systems.
2 Normative references
The following documents are essential to the application of this document. For
the dated documents, only the versions with the dates indicated are applicable
to this document; for the undated documents, only the latest version (including
all the amendments) are applicable to this standard.
GB/T 10125-2012 Corrosion tests in artificial atmospheres - Salt spray tests
YB/T 4164 Double wall copper-brazed steel tubing
3 Technical requirements
3.1 Metal pipe
3.1.1 Basic requirements.
The basic dimensions, rupture pressure, average linear density of metal pipes
shall comply with the requirements of Table 1. It may apply plating to the outer
surface of the metal pipe, but it shall meet the requirements for the use of inner
and outer tube fittings and hose end fittings as specified in this standard.