JC/T 932-2013 PDF English
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JC/T 932-2013: Drainage fittings for sanitary wares---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/JCT932-2013
Construction Material Industry Standard
of the People’s Republic of China
ICS 90.140.70
Q 31
Record No.. 40958-2013
Replacing JC/T 932-2003
Drainage fittings for sanitary wares
Issued on. APRIL 25, 2013
Implemented on. SEPTEMBER 1, 2013
Issued by. Ministry of Industry and Information Technology of the People's
Republic of China
Table of Contents
1 Scope... 5
2 Normative references... 5
3 Terms and definitions... 6
4 Materials... 7
5 Technical requirements... 7
6 Test methods... 10
7 Inspection rules... 15
8 Marking, packaging, transportation and storage... 18
Annex A (Normative) Connection dimensions of waste fitting... 19
Annex B (Normative) Dimensions of flow test etalon of waste fitting... 23
1 Scope
This standard specifies the terms and definitions, materials, technical requirements,
inspection methods, inspection rules, marking, packaging, transportation and storage of
drainage fittings for sanitary wares (hereinafter referred to as “waste fitting”).
This standard is applicable to the waste fitting products such as wash basin, washing-tank,
bath-tub, bidet, shower room and urinal, which are connected to gravity drainage pipe.
2 Normative references
The following referenced documents are indispensable for the application of this
document. For dated references, only the edition cited applies. For undated references,
the latest edition of the referenced document (including any amendments) applies.
GB/T 197-2003 General purpose metric screw threads—Tolerances
GB/T 1176 Specification for cast copper alloys
GB/T 1527 Drawn tube of copper and copper alloys
GB/T 2828.1
Sampling procedures for inspection by attributes - Part 1.
Sampling schemes indexed by acceptance quality limit (AQL) for
lot-by-lot inspection
GB/T 2829-2002 Sampling procedures and tables for periodic inspection by
attributes (Apply to inspection of process stability)
GB/T 6461-2002
Methods for Corrosion Testing of Metallic and Other Inorganic
Coatings on Metallic Substrates - Rating of Test Specimens and
Manufactured Articles Subjected to Corrosion Tests
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
waste fitting
the device between sanitary ware and building drainage pipe in the drainage system, and
used for control and transport waste water from the bottom of sanitary ware to drainage
pipes of building. Waste fitting is composed of drainage elbow, connection and sealing
parts.
3.2
trap
the device between the main part of waste fitting and drainage pipe of building, used for
drainage and preventing from smell return.
3.3
overflow
the device assisting drainage of excessive water when the water level exceeds the critical
water level of the device matching the waste fitting.
4 Materials
4.1 The materials of casting copper parts shall meet the requirements of GB 1176.It
may also be made of other copper materials that guarantee the technical requirements.
4.2 The copper pipe shall meet the requirements of GB/T 1527.
4.3 The plastic materials shall meet the requirements of GB 12670, GB 12671 and GB
12672.
5 Technical requirements
5.1 Requirements for connection dimension
The dimension of connection of waste fitting shall meet the requirements of Annex A.
5.2 Processing and assembling
5.2.1 The exterior surface of metal parts of product shall be free from defects such as
sand hole, shrinkage cavity, crack and air hole.
5.3 Appearance
5.3.1 The cuspidal edge, flash and burr of the exterior surface of product shall be
cleared off.
5.3.2 The polished external surface texture shall be consistent in direction, harmonious
and free from curly grain.
5.3.3 The visible plated-surface shall be uniform, and free from phenomenon such as
peeling, exfoliation, foaming and un-plated.
5.3.4 After the waste fitting is subjected to acetic acid-salt spray test for 24h according to
6.3.4; the visible plating-layer under the installation and use state and the invisible
plating-layer shall not be lower than the requirements for Grade 9 and Grade 6 of
appearance rating (RA) in Table 1 of GB/T 6461-2002 respectively.
5.4 Requirements for wall thickness of waste fitting pipe
5.4.2 Part of plastic pipe
The wall thickness of plastic pipe and pipe fitting shall not be less than 1.57mm.
5.5 Trap seal
Trap seal of waste fitting with trap shall not be less than 50 mm.
5.6 Stability of water sealing
Test the waste fitting with trap according to the method in 6.6 and the trap seal after test
shall not be less than 50 mm.
5.7 Performance requirements
5.7.1 Sealing performance
5.7.2 Flow performance
Conduct test according to the method in 6.7.2; the flow performance of waste fitting shall
not be lower than the requirements of Table 1.
5.7.3 Overflow performance
5.7.3.1 Test is conducted according to the method in according to 6.7.3; the flow of
waste fitting shall not be lower than the requirements of Table 2.
5.8 Bearing performance
For test conducted according to the method in 6.8, the significant surface of waste fitting
matching bath-tub and shower room shall be free from crack, and the deformation amount
shall not be greater than 3%.
5.9 Service life
After 10 000 cycles of service life test according to the method in 6.9, the product shall be
free from significant defect, and convenient for disassembly, and free from the defects that
affect the use function; after service life test, test is conducted according to 5.2.4.The
change of test result shall not exceed ±20%, and shall meet the requirements of 5.7.1.
5.10.3 Dotty impact
For test conducted according to the method in 6.10.3, the surface of waste fitting shall be
free from significant damage.
6 Test methods
6.1 Test on requirements for connection dimension
The test on dimension of connection of waste fitting shall be conducted with Vernier
caliper with precision of 0.02 mm or test equipment with equivalent precision.
6.2 Test on processing and assembling test
6.2.5 The assembly test of waste fitting shall be conducted by hand-feeling.
6.3 Test on appearance
6.3.1 Inspect the appearance of product visually.
6.3.2 Visual inspection shall be carried out on the polished surface of product under
natural scattered light or white light without reflected light. The illuminance is not lower
than 300 lx.
6.3.3 Visual inspection shall be carried out on the plated-surface of product under
natural scattered light or white light without reflected. The illuminance is not lower than
300 lx.
6.3.4 Acetic acid-salt spray test shall be conducted on plated-surface of waste fitting for
24h according to GB/T 10125-1997.The results are rated according to GB/T 6461-2002.
6.4 Test on requirements for wall thickness of waste fitting pipe
The test on thickness shall be conducted with Vernier caliper with precision of 0.02 mm.
6.5 Test on trap seal
Test on trap seal shall be conducted with water sealing ruler or straight-ruler.
6.6 Test on stability of water sealing
6.7.1.3 Install the tested waste fitting on the test device in Figure 2; shut down the
drainage device; apply static water pressure of 150mm water column on the overflow port
and maintain it for 5 min.
6.7.1.4 Install the tested waste fitting on the test device in Figure 2; turn on the drainage
device, block the drainage port at the end; apply static water pressure of 500 mm water
column at the water inlet of drainage device and maintain it for 5 min.
6.7.2 Test on flow performance
Install tested sample on test device in Annex B.1; turn on the drainage device; the
continuous water level of drainage fitting, that is used with matching parts such as wash
basin, bidet, and washing-tank, is maintained at vertical height of 120+2 -2 mm compared to
water inlet; the continuous water level of drainage fitting that is used with matching part
bath-tub is maintained at vertical height of 150-2 -2 mm compared to the water inlet; after the
water level is stabilized, record the flow rate.
7 Inspection rules
7.1 Inspection classification
Product inspection is classified into exit-factory inspection and type inspection based on
type.
7.2 Exit-factory inspection
7.2.1 It is carried out by manufacturer's quality inspection department; qualification
certificate shall be signed before leaving the factory.
7.2.2 The items of exit-factory inspection include 5.1, 5.2, 5.3.1, 5.3.2, 5.3.3, 5.3.4, 5.4,
5.5 and 5.7.1.
7.2.4 For exit-factory inspection, take the products of same-category, same-variety and
same-model as a batch; the samples for exit-factory inspection are taken from the same
batch. Sampling is carried out in accordance with the requirements of GB/T 2828.1-2003,
with the general inspection level I, a normal inspection for single sampling plan. After the
inspected items are inspected, if all the items are acceptable, then this batch of products
shall be determined as acceptable; if one or more items are rejected, then this batch shall
be determined as rejected.
7.3 Type inspection
7.3.1 Inspection items
Type inspection items include all those (except 5.1) required in Clause 5.
7.3.4 Sampling and determination
The samples of the type inspection are drawn from the submitted qualified batch. The
unqualified quality level (RQL) is 50.The single sampling method of the determination
level I in GB/T 2829-2002 is adopted. The sampling and determination are carried out
according to those specified in Table 4.After the inspected items are inspected, if all the
items are acceptable, then this batch of products shall be determined as acceptable; if
one or more items are rejected, then this batch shall be determined as rejected.
8 Marking, packaging, transportation and storage
8.1 Marking
A permanent trademark shall be arranged on the obvious location of product.
8.2 Packaging
Product packaging shall indicate the product name, product model, trademark,
manufacturer's name and address, and the standard number used.
8.3 Transportation
Products shall be free from impact, squeeze, rain, moisture and chemical corrosion during
transportation.
8.4 Storage
The product shall be stored in a well-ventilated, dry room, and shall not be stored together
with corrosive substances such as acid or alkali.
JC/T 932-2013
Construction Material Industry Standard
of the People’s Republic of China
ICS 90.140.70
Q 31
Record No.. 40958-2013
Replacing JC/T 932-2003
Drainage fittings for sanitary wares
Issued on. APRIL 25, 2013
Implemented on. SEPTEMBER 1, 2013
Issued by. Ministry of Industry and Information Technology of the People's
Republic of China
Table of Contents
1 Scope... 5
2 Normative references... 5
3 Terms and definitions... 6
4 Materials... 7
5 Technical requirements... 7
6 Test methods... 10
7 Inspection rules... 15
8 Marking, packaging, transportation and storage... 18
Annex A (Normative) Connection dimensions of waste fitting... 19
Annex B (Normative) Dimensions of flow test etalon of waste fitting... 23
1 Scope
This standard specifies the terms and definitions, materials, technical requirements,
inspection methods, inspection rules, marking, packaging, transportation and storage of
drainage fittings for sanitary wares (hereinafter referred to as “waste fitting”).
This standard is applicable to the waste fitting products such as wash basin, washing-tank,
bath-tub, bidet, shower room and urinal, which are connected to gravity drainage pipe.
2 Normative references
The following referenced documents are indispensable for the application of this
document. For dated references, only the edition cited applies. For undated references,
the latest edition of the referenced document (including any amendments) applies.
GB/T 197-2003 General purpose metric screw threads—Tolerances
GB/T 1176 Specification for cast copper alloys
GB/T 1527 Drawn tube of copper and copper alloys
GB/T 2828.1
Sampling procedures for inspection by attributes - Part 1.
Sampling schemes indexed by acceptance quality limit (AQL) for
lot-by-lot inspection
GB/T 2829-2002 Sampling procedures and tables for periodic inspection by
attributes (Apply to inspection of process stability)
GB/T 6461-2002
Methods for Corrosion Testing of Metallic and Other Inorganic
Coatings on Metallic Substrates - Rating of Test Specimens and
Manufactured Articles Subjected to Corrosion Tests
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
waste fitting
the device between sanitary ware and building drainage pipe in the drainage system, and
used for control and transport waste water from the bottom of sanitary ware to drainage
pipes of building. Waste fitting is composed of drainage elbow, connection and sealing
parts.
3.2
trap
the device between the main part of waste fitting and drainage pipe of building, used for
drainage and preventing from smell return.
3.3
overflow
the device assisting drainage of excessive water when the water level exceeds the critical
water level of the device matching the waste fitting.
4 Materials
4.1 The materials of casting copper parts shall meet the requirements of GB 1176.It
may also be made of other copper materials that guarantee the technical requirements.
4.2 The copper pipe shall meet the requirements of GB/T 1527.
4.3 The plastic materials shall meet the requirements of GB 12670, GB 12671 and GB
12672.
5 Technical requirements
5.1 Requirements for connection dimension
The dimension of connection of waste fitting shall meet the requirements of Annex A.
5.2 Processing and assembling
5.2.1 The exterior surface of metal parts of product shall be free from defects such as
sand hole, shrinkage cavity, crack and air hole.
5.3 Appearance
5.3.1 The cuspidal edge, flash and burr of the exterior surface of product shall be
cleared off.
5.3.2 The polished external surface texture shall be consistent in direction, harmonious
and free from curly grain.
5.3.3 The visible plated-surface shall be uniform, and free from phenomenon such as
peeling, exfoliation, foaming and un-plated.
5.3.4 After the waste fitting is subjected to acetic acid-salt spray test for 24h according to
6.3.4; the visible plating-layer under the installation and use state and the invisible
plating-layer shall not be lower than the requirements for Grade 9 and Grade 6 of
appearance rating (RA) in Table 1 of GB/T 6461-2002 respectively.
5.4 Requirements for wall thickness of waste fitting pipe
5.4.2 Part of plastic pipe
The wall thickness of plastic pipe and pipe fitting shall not be less than 1.57mm.
5.5 Trap seal
Trap seal of waste fitting with trap shall not be less than 50 mm.
5.6 Stability of water sealing
Test the waste fitting with trap according to the method in 6.6 and the trap seal after test
shall not be less than 50 mm.
5.7 Performance requirements
5.7.1 Sealing performance
5.7.2 Flow performance
Conduct test according to the method in 6.7.2; the flow performance of waste fitting shall
not be lower than the requirements of Table 1.
5.7.3 Overflow performance
5.7.3.1 Test is conducted according to the method in according to 6.7.3; the flow of
waste fitting shall not be lower than the requirements of Table 2.
5.8 Bearing performance
For test conducted according to the method in 6.8, the significant surface of waste fitting
matching bath-tub and shower room shall be free from crack, and the deformation amount
shall not be greater than 3%.
5.9 Service life
After 10 000 cycles of service life test according to the method in 6.9, the product shall be
free from significant defect, and convenient for disassembly, and free from the defects that
affect the use function; after service life test, test is conducted according to 5.2.4.The
change of test result shall not exceed ±20%, and shall meet the requirements of 5.7.1.
5.10.3 Dotty impact
For test conducted according to the method in 6.10.3, the surface of waste fitting shall be
free from significant damage.
6 Test methods
6.1 Test on requirements for connection dimension
The test on dimension of connection of waste fitting shall be conducted with Vernier
caliper with precision of 0.02 mm or test equipment with equivalent precision.
6.2 Test on processing and assembling test
6.2.5 The assembly test of waste fitting shall be conducted by hand-feeling.
6.3 Test on appearance
6.3.1 Inspect the appearance of product visually.
6.3.2 Visual inspection shall be carried out on the polished surface of product under
natural scattered light or white light without reflected light. The illuminance is not lower
than 300 lx.
6.3.3 Visual inspection shall be carried out on the plated-surface of product under
natural scattered light or white light without reflected. The illuminance is not lower than
300 lx.
6.3.4 Acetic acid-salt spray test shall be conducted on plated-surface of waste fitting for
24h according to GB/T 10125-1997.The results are rated according to GB/T 6461-2002.
6.4 Test on requirements for wall thickness of waste fitting pipe
The test on thickness shall be conducted with Vernier caliper with precision of 0.02 mm.
6.5 Test on trap seal
Test on trap seal shall be conducted with water sealing ruler or straight-ruler.
6.6 Test on stability of water sealing
6.7.1.3 Install the tested waste fitting on the test device in Figure 2; shut down the
drainage device; apply static water pressure of 150mm water column on the overflow port
and maintain it for 5 min.
6.7.1.4 Install the tested waste fitting on the test device in Figure 2; turn on the drainage
device, block the drainage port at the end; apply static water pressure of 500 mm water
column at the water inlet of drainage device and maintain it for 5 min.
6.7.2 Test on flow performance
Install tested sample on test device in Annex B.1; turn on the drainage device; the
continuous water level of drainage fitting, that is used with matching parts such as wash
basin, bidet, and washing-tank, is maintained at vertical height of 120+2 -2 mm compared to
water inlet; the continuous water level of drainage fitting that is used with matching part
bath-tub is maintained at vertical height of 150-2 -2 mm compared to the water inlet; after the
water level is stabilized, record the flow rate.
7 Inspection rules
7.1 Inspection classification
Product inspection is classified into exit-factory inspection and type inspection based on
type.
7.2 Exit-factory inspection
7.2.1 It is carried out by manufacturer's quality inspection department; qualification
certificate shall be signed before leaving the factory.
7.2.2 The items of exit-factory inspection include 5.1, 5.2, 5.3.1, 5.3.2, 5.3.3, 5.3.4, 5.4,
5.5 and 5.7.1.
7.2.4 For exit-factory inspection, take the products of same-category, same-variety and
same-model as a batch; the samples for exit-factory inspection are taken from the same
batch. Sampling is carried out in accordance with the requirements of GB/T 2828.1-2003,
with the general inspection level I, a normal inspection for single sampling plan. After the
inspected items are inspected, if all the items are acceptable, then this batch of products
shall be determined as acceptable; if one or more items are rejected, then this batch shall
be determined as rejected.
7.3 Type inspection
7.3.1 Inspection items
Type inspection items include all those (except 5.1) required in Clause 5.
7.3.4 Sampling and determination
The samples of the type inspection are drawn from the submitted qualified batch. The
unqualified quality level (RQL) is 50.The single sampling method of the determination
level I in GB/T 2829-2002 is adopted. The sampling and determination are carried out
according to those specified in Table 4.After the inspected items are inspected, if all the
items are acceptable, then this batch of products shall be determined as acceptable; if
one or more items are rejected, then this batch shall be determined as rejected.
8 Marking, packaging, transportation and storage
8.1 Marking
A permanent trademark shall be arranged on the obvious location of product.
8.2 Packaging
Product packaging shall indicate the product name, product model, trademark,
manufacturer's name and address, and the standard number used.
8.3 Transportation
Products shall be free from impact, squeeze, rain, moisture and chemical corrosion during
transportation.
8.4 Storage
The product shall be stored in a well-ventilated, dry room, and shall not be stored together
with corrosive substances such as acid or alkali.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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