GB/T 39385-2020 English PDF

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GB/T 39385-2020: Plastics piping and ducting systems. Thermoplastics pipes. Determination of ring flexibility
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 39385-2020	94	Add to Cart	3 days	Plastics piping and ducting systems. Thermoplastics pipes. Determination of ring flexibility	Valid

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Basic data

Standard ID: GB/T 39385-2020 (GB/T39385-2020)
Description (Translated English): Plastics piping and ducting systems. Thermoplastics pipes. Determination of ring flexibility
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: G33
Classification of International Standard: 83.140.30
Word Count Estimation: 5,512
Date of Issue: 2020-11-19
Date of Implementation: 2021-06-01
Quoted Standard: ISO 9969
Adopted Standard: ISO 13968-2008, IDT
Regulation (derived from): National Standard Announcement No. 26 of 2020
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration
Summary: This standard specifies a test method for the flexibility of a ring-shaped cross-section thermoplastic pipe ring. This standard is applicable to the determination of the deformation and force value when the pipe reaches the specified radial deformation or breaks within the specified radial deformation range.

GB/T 39385-2020: Plastics piping and ducting systems. Thermoplastics pipes. Determination of ring flexibility

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
(Plastic piping systems Thermoplastic pipes Determination of ring flexibility) ICS 83.140.30 G33 National Standards of People's Republic of China Plastic Piping System Thermoplastic Pipe Measurement of ring flexibility 2020-11-19 released 2021-06-01 implementation State Administration for Market Regulation Issued by the National Standardization Management Committee

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard uses the translation method equivalent to ISO 13968.2008 "Plastic Piping System Thermoplastic Pipe Ring Flexibility Determination". The Chinese documents that have a consistent correspondence with the international documents cited in this standard are as follows. ---GB/T 9647-2015 Thermoplastic pipe ring stiffness determination (ISO 9969.2007, IDT) Please note that certain contents of this document may involve patents. The issuing agency of this document is not responsible for identifying these patents. This standard was proposed by the China National Light Industry Council. This standard is under the jurisdiction of the National Standardization Technical Committee for Plastic Products (SAC/TC48). Drafting organizations of this standard. Beijing Building Materials Inspection and Research Institute Co., Ltd. (National Water-saving Appliance Product Quality Supervision and Inspection Center), China University Plastic Products Co., Ltd., Zhejiang Zhongcai Pipeline Technology Co., Ltd., Yonggao Co., Ltd., Chengdu Chuanlu Plastic Group Co., Ltd. Company, Zhejiang Weixing New Building Materials Co., Ltd., Baoding Lida Plastic Industry Co., Ltd., Beijing Technology and Business University (Light Industry Plastics Processing Application Research Research Institute), Shanghai Baidie Pipe Industry Technology Co., Ltd., Hebei Yourong Pipe Industry Co., Ltd., National Chemical Building Materials Testing Center (material testing Test Department), Hangzhou Unicom Pipe Industry Co., Ltd., Sichuan Senpu Pipe Co., Ltd., Tianjin Tianyou Architectural Design Co., Ltd., Chengde City Precision Testing Machine Co., Ltd. The main drafters of this standard. Li Yanjun, Li Yu, Chen Jianchun, Huang Jian, Jia Lirong, Tao Yuejie, Li Yanying, Xiang Aimin, Tang Hui, Niu Jianying, Li Yu'e, Chen Yiming, Yin Weihua, Liu Bing, Wang Xinhua. Plastic Piping System Thermoplastic Pipe Measurement of ring flexibility

1 Scope

This standard specifies a test method for the flexibility of a ring-shaped cross-section thermoplastic pipe ring. This standard is applicable to the determination of the deformation and force value when the pipe reaches the specified radial deformation or breaks within the specified radial deformation range.

2 Normative references

The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this document. For undated references, the latest version (including all amendments) applies to this document. ISO 9969 Thermoplastic pipe ring stiffness determination

3 Terms and definitions

The following terms and definitions apply to this document. 3.1 Ring flexibility On the basis of maintaining the integrity of the pipe structure, the ability of the pipe to withstand radial deformation. [EN13476-1.2007]

4 Principle

At a constant rate, the annular cross-section of the pipe is deformed in the diameter direction until it reaches the specified amount of deformation or breaks. Measure the force value and the amount of deformation at this time to determine the ring flexibility of the pipe. During the test, monitor the state of the sample and check whether the sample has specified mechanical damage. Note. The following test parameters can be given by relevant standards. a) When appropriate, samples with a length greater than that specified in ISO 9969 can also be selected, see Chapter 6; b) Deformation, as appropriate, see 8.1.

5 equipment

5.1 Testing machine It meets the requirements of ISO 9969 and can produce the required radial deformation of the sample at an appropriate speed (see ISO 9969 for the test speed. Table 1 of.2007). 5.2 Dimension and force measurement device It conforms to the requirements of ISO 9969 and can measure the radial deformation and the corresponding force value when the sample reaches the specified requirements. ......

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