QC/T 1043-2016 PDF English
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QC/T 1043-2016: Automotive fuel system nylon tube---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/QCT1043-2016
AUTOMOBILE INDUSTRY STANDARD
OF THE PEOPLE’S REPUBLIC OF CHINA
ICS 23.040.20
T 13
Automotive fuel system nylon tube
ISSUED ON: APRIL 05, 2016
IMPLEMENTED ON: SEPTEMBER 01, 2016
Issued by: Ministry of Industry and Information Technology of PRC
Table of Contents
Announcement ... 3
Foreword ... 8
1 Scope ... 9
2 Normative references ... 9
3 Terms and definitions ... 10
4 Dimensions and tolerances ... 10
5 Materials and colors ... 11
6 Technical requirements ... 11
7 Test methods ... 13
8 Marking ... 19
9 Inspection rules ... 20
10 Packaging, transportation, storage ... 21
Announcement ... 4
Foreword ... 9
1 Scope ... 10
2 Normative references ... 10
3 Terms and definitions ... 11
4 Dimensions and tolerances ... 11
5 Materials and colors ... 12
6 Technical requirements ... 12
7 Test methods ... 14
8 Marking ... 20
9 Inspection rules ... 21
10 Packaging, transportation, storage ... 22
Annex:
References, names and dates of implementation of 35 automotive
industry standards
No. Standard reference Standard name
Standard
reference being
substituted
Date of
implementation
(Year-Month-
Day)
326 QC/T 16-2016
General technical
specifications for
ignition coil
QC/T 16-1992 2016-09-01
327 QC/T 224-2016
Specifications of
engine used in
motorcycles and
mopeds
QC/T 224-2007 2016-09-01
328 QC/T 228-2016
Manipulation inhaul
cable of motorcycle
and moped
QC/T 228.1-1997,
QC/T 228.2-1997,
QC/T 228.3-1997,
QC/T 228.4-1997,
QC/T 228.5-1997,
QC/T 228.6-1997,
QC/T 228.7-1997,
QC/T 228.8-1997,
QC/T 228.9-1997,
QC/T 228.10-1997
2016-09-01
329 QC/T 307-2016
Technical
specifications for
vacuum booster
QC/T 307-1999 2016-09-01
330 QC/T 414-2016
Color specification
and model
preparation method
for automobile wires
(cables)
QC/T 414-1999,
QC/T 730-2005 2016-09-01
331 QC/T 415-2016
Automotive
cigarette lighter and
cigarette-lighter
power socket
QC/T 415-1999 2016-09-01
332 QC/T 469-2016
Automotive engine
valve technical
conditions
QC/T 469-2002
2016-09-01
333 QC/T 681-2016
Technical conditions
for starting relay of
motorcycle and
moped
QC/T 681-2002
2016-09-01
346 QC/T 1038-2016
Automotive Light
Emitting Diodes
(LEDs) and
Modules
2016-09-01
347 QC/T 1039-2016
Solar sensor for
automotive air
conditioning
2016-09-01
348 QC/T 1040-2016
Motorcycle and
moped electric fuel
pump
2016-09-01
349 QC/T 1041-2016
Technical
requirements for
motorcycle
evaporative
pollutant control
systems (devices)
for motorcycles and
mopeds
2016-09-01
350 QC/T 1042-2016
Motorcycle and
moped vibration
comfort test method
2016-09-01
351 QC/T 1043-2016
Nylon tube for
automotive fuel
system
2016-09-01
352 QC/T 1044-2016 Foot pad for automobile
2016-09-01
353 QC/T 1045-2016
Heat-shrinkable
tubing for
automotive pipe
2016-09-01
354 QC/T 1046-2016
Heat pipe shrinkage
for automobile
pipeline protection
2016-09-01
355 QC/T 1047-2016 City bus plastic seat 2016-09-01
356 QC/T 1048-2016 Bus emergency hammer
2016-09-01
357 QC/T 1049-2016
Technical
requirements and
test methods for
matching of
automobile rack and
pinion hydraulic
power steering
system
2016-09-01
Automotive fuel system nylon tube
1 Scope
This standard specifies the requirements such as terms and definitions,
dimensions and tolerances, materials and colors, technical requirements, test
methods, marking, inspection rules, packaging, transportation, storage for
single-layer nylon hose and hose assemblies for automotive fuel systems.
This standard applies to single-layer nylon hose and hose assemblies for
automotive fuel 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 1033.1-2008 Plastics - Methods for determining the density of non-
cellular plastics - Part 1: Immersion method liquid pyknometer method and
titration method
GB/T 2828.1-2012 Sampling procedures for inspection by attributes - Part 1:
Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot
inspection
GB/T 2918-1998 Plastics - Standard atmospheres for conditioning and
testing
GB/T 6003.1-2012 Test sieves - Technical requirements and testing - Part 1:
Test sieves of metal wire cloth
GB/T 7528-2011 Rubber and plastics hoses and hose assemblies -
Vocabulary
GB/T 19466.3-2004 Plastics - Differential scanning calorimetry (DSC) - Part
3: Determination of temperature and enthalpy of melting and crystallization
QC/T 798-2008 Multi-layers plastic tubing for automotive fuel system
ISO 1874.1:2010 Plastics - Polyamide (PA) moulding and extrusion
materials - Part 1: Designation system and basis for specification
Visually check the appearance of the specimen. Take a 100 mm specimen from
the inner surface of the tube. Use a cutting tool to cut it off along the axial
direction. Check the presence of defects.
7.3 Test of density
Use the method A (impregnation method) in GB/T 1033.1-2008 to carry out test.
7.4 Test of melting temperature
Follow the requirements of GB/T 19466.3-2004 to carry out test.
7.5 Test of extractable components
7.5.1 Test preparation.
Use the wire mesh as specified in GB/T 6003.1-2012 for the extraction. The
pore size is 0.5 mm and 3.15 mm, to limit the size of the particles. Use the
ethanol which has a purity of more than 99.5% as the extract.
7.5.2 Test device.
The schematic diagram of extractor is as shown in Figure 1.
7.5.3 Test procedure.
The test is carried out as follows:
a) Bake the extraction vessel and the round-bottom flask at 105 °C for 1 h.
Move it to room temperature to cool it. Weigh the mass of the extraction
vessel m0, accurate to 0.1 mg;
b) Then put the required specimen into the extraction vessel. Weigh the mass
m1 again. Generally take 7 g ~ 8 g of specimen, accurate to 0.1 mg. Put
the extraction vessel into the extractor;
c) In the round-bottom flask, add the extract and zeolite. Move the round-
bottom flask in an electric heating jacket. Use a test tube clamp and test
tube holder to fix the whole equipment. Correctly install the water inlet and
water outlet of the cooler. Open the faucet switch to allow the water to
completely flow through the cooler;
d) Turn on the power supply of the electric heating jacket. Adjust the heating
power of the electric heating jacket, to ensure that the extractor produces
4 overflows per hour. After one overflow is finished, start time-keeping;
7.6.1.1 Specimen.
Take 5 pieces of nylon hose or assembly of nylon hose which has a free length
of 300 mm.
7.6.1.2 Test device.
Testing machine of burst pressure.
7.6.1.3 Test procedure.
Carry out test at the ambient temperature of (23 ± 2) °C. Make the assembly of
nylon hose be full of liquid (water of hydraulic oil). Then at the rate of (7 ± 1)
MPa/min, apply pressure to the assembly of nylon hose, until it bursts. Record
the maximum pressure during the test.
7.6.2 High-temperature burst test.
7.6.2.1 Specimen.
Take 5 pieces of nylon hose or assembly of nylon hose which has a free length
of 300 mm.
7.6.2.2 Test device.
Testing machine of burst pressure.
7.6.2.3 Test procedure.
Make the assembly of nylon hose be full of liquid (water of hydraulic oil).
Maintain it at (100 ± 5) °C for 1 h. Then at the rate of (7 ± 1) MPa/min, apply
pressure to the assembly of nylon hose, until it bursts. Record the maximum
pressure during the test.
7.7 Test of impact strength
7.7.1 Specimen.
Randomly take 5 specimens which have a length of at least 50 mm. Carry out
test under the following conditions:
a) The impact rate is 3.6 m/s ~ 4 m/s (optimally 3.8 m/s) and impact energy
is 7.5 J.
b) The temperature is (23 ± 2) °C and (- 40 ± 3) °C. For the test at -40 °C,
the specimen is cooled for at least 4 h;
c) The spacing of the support surfaces of the pendulum impact tester: 40 mm.
7.9 Test of UV durability
Randomly take 3 specimens which have a length of 150 mm. Follow the cycle
1# in Table 4 of ISO 4892.3-2006 to carry out test. The time of exposure is 504
h (42 cycles). Remove the specimen, place it for 30 min. Follow the
requirements of 7.7 to carry out the test of impact strength at room-temperature.
Note: Subject to the agreement between the user and the manufacturer, the time of
exposure may be as specified by the end user.
7.10 Test of fuel resistance
7.10.1 Test device.
The cycle test device is as shown in 7.10 of QC/T 798.
7.10.2 Test procedure.
The test is carried out as follows:
a) In the temperature control box, it shall place the as large number and
length of nylon tubes as possible and connect them to the cycle test device.
Use the fuel 0 # diesel to charge the cycle system. Under the following
conditions, keep the specimen for 500 h:
- Fuel temperature (40 ± 2) °C;
- Temperature of temperature control box (100 ± 2) °C.
After the test, dismantle the nylon hose from the cycle test device. The
surface of the specimen shall not have obvious cracks.
b) Follow the requirements of 7.6.1 to perform burst test at room-temperature.
7.11 Pullout test
7.11.1 Specimen.
Take 3 hose assemblies whose one end is equipped with pipe fitting and a free
length of 150 mm.
7.11.2 Test procedure.
The test is carried out as follows:
a) For the ferrule-connected nylon hose, tighten the union nut of the
assembly of nylon tube and the pipe joint. The tightening torque is as
shown in Table 7;
e) Code of manufacturing date.
9 Inspection rules
9.1 Category of inspection
The inspection is divided into exit-factory inspection and type inspection.
9.2 Exit-factory inspection
9.2.1 Inspection items for exit-factory inspection include appearance,
dimension and marking, burst pressure at room-temperature. Based on the
production batch, take sufficient specimens. Then follow the requirements of
this standard to carry out inspection.
9.2.2 When the ordering organization samples the product for inspection, follow
the provisions of GB/T 2828.1-2012. The sampling plan and the acceptance
quality level (AQL) are as agreed by the supplier and the purchaser.
9.3 Type inspection
9.3.1 Classification of type inspection.
The type inspection is classified as follows:
a) Trial-type identification of new product or old product after trans-plant
production;
b) After formal production, when there are significant changes in structure,
materials, processes that may affect product’s performance;
c) When the it resumes production after a long-term shutdown;
d) For batched or mass-produced products, not less than once per 6 months;
e) When the exit-factory inspection result is significantly different from the
previous type inspection result;
f) When the national quality supervision agency proposes the requirements
for type inspection.
9.3.2 Sampling.
The products of the same specification as continuously produced at the same
production site, the same raw materials, equipment and processes form a batch.
The products to be type-inspected shall be taken from the same batch of
products that have been passed the exit-factory inspection. The sampling plan
shall be as agreed upon by the supplier and the purchaser.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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