GB/T 39379-2020 English PDF (GB/T39379-2020)

GB/T 39379-2020: Thermoplastics piping systems for non-pressure applications - Test method for watertightness
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GB/T 39379-2020
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 83.140.30
G 33
GB/T 39379-2020 / ISO 13254:2010
Thermoplastics Piping Systems for Non-pressure
Applications - Test Method for Watertightness
(ISO 13254:2010, IDT)
ISSUED ON: NOVEMBER 19, 2020
IMPLEMENTED ON: JUNE 1, 2021
Issued by: State Administration for Market Regulation;
Standardization Administration of the People’s Republic of
China.
Table of Contents
Foreword ... 3 
1 Scope ... 4 
2 Principle ... 4 
3 Equipment ... 4 
4 Specimen ... 5 
5 Test Procedures ... 6 
6 Test Report ... 6 
Foreword
This Standard was drafted in accordance with the rules in GB/T 1.1-2009.
This Standard uses the translation method and equivalently adopts ISO 13254:2010
Thermoplastics Piping Systems for Non-pressure Applications - Test Method for
Watertightness.
This Standard makes the following editorial modifications:
---The pressure dimension bar is modified into the legal measurement unit MPa
(megapascal) of our country;
---In order to be consistent with the description of the standard, the indicating arrow
of b in Figure 1 is changed to outward.
Please be noted that certain content of this document might involve patents. The
institution issuing this document does not undertake the responsibility of identifying
these patents.
This Standard was proposed by China National Light Industry Council.
This Standard shall be under the jurisdiction of National Technical Committee 48 on
Plastics Products of Standardization Administration of China (SAC/TC 48).
The drafting organizations of this Standard: Beijing Building Materials Testing Academy
Co., Ltd. (National Supervision and Inspection Center for Water-saving Appliance
Products); Shanghai White Butterfly Pipe Technology Co., Ltd.; Yada Plastic Products
Co., Ltd.; Yonggao Co., Ltd.; Zhejiang Weixing New Building Materials Co., Ltd.;
Hangzhou Unicom Piping Industry Co., Ltd.; Baoding Lida Plastic Industry Co., Ltd.;
Shandong Dongxin Plastic Co., Ltd.; National Test Center of Polymer and Chemical
Building Materials (Material Testing Department); Beijing Technology and Business
University (Light Industry Plastics Processing and Application Research Institute);
Beijing Building Materials Academy of Sciences Research; China Aviation Planning
and Design Institute (Group) Co., Ltd.; Chengde Precision Testing Machine Co., Ltd.
The main drafters of this Standard: Li Yanjun, Chai Gang, Wei Yingchun, Sun Huali, Li
Dazhi, Chen Yiming, Yang Xuanning, Pan Fuqu, Zhang Wei, Xiang Aimin, Yang Feihua,
Zhao Jie, Wang Xinhua.
Thermoplastics Piping Systems for Non-pressure
Applications - Test Method for Watertightness
1 Scope
This Standard specifies the test method for watertightness of thermoplastics piping
systems for non-pressure applications.
This Standard is applicable to products and plastic piping system joints made of two
ore more components through secondary processing.
2 Principle
Within the specified time, the secondary processed products or the assembly
composed of pipes and / or pipe fittings are subject to the specified internal hydrostatic
pressure. During the test, check the airtightness of the secondary processed products
or the assembly joints.
NOTE: the following test requirements may be provided by relevant standards:
a) Specimen preparation procedures in 4.1 and Chapter 5;
b) The number of specimens in 4.2.
3 Equipment
3.1 End Sealing Device
The joint assembly can be sealed and properly fixed; ensure that the sealing device or
specimen does not separate under the test pressure and no axial force shall be applied
to the specimen. The weight of the device shall not affect the deflection angle of the
specimen (see 5.2).
3.2 Hydrostatic Pressure Source
It is connected to at least one end of the sealing device. In accordance with the
requirements of 5.4, gradually and smoothly apply a pressure to the specimen. During
the test, the specified test pressure can be maintained, and the fluctuation range is
within ൅2െ1 % (see Chapter 5).
3.3 Vent Valve
GB/T 39379-2020
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 83.140.30
G 33
GB/T 39379-2020 / ISO 13254:2010
Thermoplastics Piping Systems for Non-pressure
Applications - Test Method for Watertightness
(ISO 13254:2010, IDT)
ISSUED ON: NOVEMBER 19, 2020
IMPLEMENTED ON: JUNE 1, 2021
Issued by: State Administration for Market Regulation;
Standardization Administration of the People’s Republic of
China.
Table of Contents
Foreword ... 3 
1 Scope ... 4 
2 Principle ... 4 
3 Equipment ... 4 
4 Specimen ... 5 
5 Test Procedures ... 6 
6 Test Report ... 6 
Foreword
This Standard was drafted in accordance with the rules in GB/T 1.1-2009.
This Standard uses the translation method and equivalently adopts ISO 13254:2010
Thermoplastics Piping Systems for Non-pressure Applications - Test Method for
Watertightness.
This Standard makes the following editorial modifications:
---The pressure dimension bar is modified into the legal measurement unit MPa
(megapascal) of our country;
---In order to be consistent with the description of the standard, the indicating arrow
of b in Figure 1 is changed to outward.
Please be noted that certain content of this document might involve patents. The
institution issuing this document does not undertake the responsibility of identifying
these patents.
This Standard was proposed by China National Light Industry Council.
This Standard shall be under the jurisdiction of National Technical Committee 48 on
Plastics Products of Standardization Administration of China (SAC/TC 48).
The drafting organizations of this Standard: Beijing Building Materials Testing Academy
Co., Ltd. (National Supervision and Inspection Center for Water-saving Appliance
Products); Shanghai White Butterfly Pipe Technology Co., Ltd.; Yada Plastic Products
Co., Ltd.; Yonggao Co., Ltd.; Zhejiang Weixing New Building Materials Co., Ltd.;
Hangzhou Unicom Piping Industry Co., Ltd.; Baoding Lida Plastic Industry Co., Ltd.;
Shandong Dongxin Plastic Co., Ltd.; National Test Center of Polymer and Chemical
Building Materials (Material Testing Department); Beijing Technology and Business
University (Light Industry Plastics Processing and Application Research Institute);
Beijing Building Materials Academy of Sciences Research; China Aviation Planning
and Design Institute (Group) Co., Ltd.; Chengde Precision Testing Machine Co., Ltd.
The main drafters of this Standard: Li Yanjun, Chai Gang, Wei Yingchun, Sun Huali, Li
Dazhi, Chen Yiming, Yang Xuanning, Pan Fuqu, Zhang Wei, Xiang Aimin, Yang Feihua,
Zhao Jie, Wang Xinhua.
Thermoplastics Piping Systems for Non-pressure
Applications - Test Method for Watertightness
1 Scope
This Standard specifies the test method for watertightness of thermoplastics piping
systems for non-pressure applications.
This Standard is applicable to products and plastic piping system joints made of two
ore more components through secondary processing.
2 Principle
Within the specified time, the secondary processed products or the assembly
composed of pipes and / or pipe fittings are subject to the specified internal hydrostatic
pressure. During the test, check the airtightness of the secondary processed products
or the assembly joints.
NOTE: the following test requirements may be provided by relevant standards:
a) Specimen preparation procedures in 4.1 and Chapter 5;
b) The number of specimens in 4.2.
3 Equipment
3.1 End Sealing Device
The joint assembly can be sealed and properly fixed; ensure that the sealing device or
specimen does not separate under the test pressure and no axial force shall be applied
to the specimen. The weight of the device shall not affect the deflection angle of the
specimen (see 5.2).
3.2 Hydrostatic Pressure Source
It is connected to at least one end of the sealing device. In accordance with the
requirements of 5.4, gradually and smoothly apply a pressure to the specimen. During
the test, the specified test pressure can be maintained, and the fluctuation range is
within ൅2െ1 % (see Chapter 5).
3.3 Vent Valve