GB/T 18742.2-2017 English PDF

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GB/T 18742.2-2017: Polypropylene (PP) piping systems for hot and cold-water installations -- Part 2: Pipes
Status: Valid

GB/T 18742.2: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 18742.2-2017	459	Add to Cart	5 days	Polypropylene (PP) piping systems for hot and cold-water installations -- Part 2: Pipes	Valid
GB/T 18742.2-2002	559	Add to Cart	3 days	Polypropylene piping systems for hot and cold water installation -- Part 2: Pipes	Obsolete

Similar standards

GB/T 19472.1   GB/T 19472.2   GB/T 21302   GB/T 18743.1   GB/T 18743.2   GB/T 18742.1   

Basic data

Standard ID: GB/T 18742.2-2017 (GB/T18742.2-2017)
Description (Translated English): Polypropylene (PP) piping systems for hot and cold-water installations -- Part 2: Pipes
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: G33
Classification of International Standard: 83.140.30
Word Count Estimation: 23,278
Date of Issue: 2017-10-14
Date of Implementation: 2018-05-01
Older Standard (superseded by this standard): GB/T 18742.2-2002
Regulation (derived from): National Standard Announcement 2017 No. 26
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China

GB/T 18742.2-2017: Polypropylene (PP) piping systems for hot and cold-water installations -- Part 2: Pipes

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Polypropylene (PP) piping systems for hot and cold water installations-Part 2. Pipes ICS 83.140.30 G33 National Standards of People's Republic of China Replacing GB/T 18742.2-2002 Hot and cold water with polypropylene pipe system Part 2. Tubing Polypropylene (PP) pipingsystemsforhotandcoldwaterinstalations- Part 2.Pipes (ISO 15874-2.2013, Plasticspip systems for hot and cold waters instalations-Polypropylene (PP) -Part 2. Pipes, MOD) 2017-10-14 Published 2018-05-01 implementation General Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China China National Standardization Administration released

Foreword

GB/T 18742 "hot and cold water with polypropylene pipe system" is divided into three parts. --- Part 1. General principles; --- Part 2. Pipe; --- Part 3. Pipe fittings. This section GB/T 18742 Part 2. This section drafted in accordance with GB/T 1.1-2009 given rules. This Part replaces GB/T 18742.2-2002 "Polypropylene piping systems for hot and cold water Part 2. Pipe", and GB/T 18742.2- Compared to.2002, the main technical changes are as follows. --- Polypropylene pipe material as raw materials modified polypropylene mixture as raw materials (see Chapter 1); --- Removed the scope of the "industrial and civil hot and cold water" and "do not use water as a medium used in the system of pipe" (see.2002 Year version of Chapter 1); --- Increase the content of the trade note (see Chapter 1); --- Added and updated the relevant normative references (see Chapter 2); --- The "raw materials used in the production of pipe should be consistent with the requirements of GB/T 18742.1 polypropylene pipe material" be amended to "use for the production of pipe Polypropylene compounding materials shall comply with the requirements of Chapter 6 and Chapter 7 of GB/T 18742.1-2017 (see Chapter 4); --- This section will "PP-H" were revised to "β crystal PP-H"; --- Pipe by polypropylene compound ingredients added β crystal PP-RCT pipe (see 5.1); --- Pipe by tube series points increased S6.3 series, the "Appendix B tube series S and nominal pressure PN relationship" to "appendix C tube series S and the maximum allowable working pressure (20 ℃, 50 years) "(see 5.2, Appendix C); --- Recalculated the value of the S series of pipe series and increase the choice of β crystal PP-RCT pipe series S (see Chapter 6); --- The pipe appearance requirements re-expressed (see 7.2); --- Increasing the barrier layer and barrier layer pipe with a total wall thickness requirements (see 7.3.2); --- Deleted the "nominal diameter dn12mm" size requirements (see.2002 version 7.4.2); --- Nominal diameter size expanded to dn200mm (see 7.3.2); --- Increasing the nominal wall thickness of S6.3 pipe series and indicate the pipe series S6.3 only applies to the β crystal PP-RCT pipe instructions (See 7.3.2); --- Increasing the allowable wall thickness deviation (see 7.3.4); --- A separate list of hydrostatic pipe strength, modify part of the hydrostatic stress and increase the β crystal PP-RCT pipe Hydrostatic Strength (see 7.4); --- Increasing the physical and chemical properties of β-crystalline PP-RCT pipe requirements (see 7.5); --- Increased ash, melting temperature, oxidation induction time, 95 ℃/1000h hydrostatic test oxidation induction time, pigment Bulk, light transmittance, oxygen permeability requirements (see 7.5); --- Modify the Charpy impact test pass determination requirements (see 7.5); --- Modify the melt flow rate and the corresponding change rate of polypropylene compound requirements (see 7.5); --- Remove the opacity requirements, into Table 8 in this section and modify the transmittance (see 7.5); --- Added "Notes on system suitability of pipes and fittings mechanically coupled" (see 7.7.1); --- Recalculate the test pressure values for the internal pressure test and increase the internal pressure test requirements for the β-crystalline PP-RCT pipe (see 7.7.2); --- Remove the "prestressing method", the "prestress" into Table 10 (see 7.7.3); --- Increased β crystal PP-RCT prestress (see 7.7.3); --- Remove Appendix A of GB/T 18742.2-2002 (see the.2002 edition of Appendix A); --- Added and modified test methods (see Chapter 8); --- Increased inspection classification (see 9.1); --- Modify grouping and grouping requirements (see 9.2.1, 9.2.2); --- Increased stereotypes inspection project requirements (see 9.3); --- Increase the factory inspection project requirements, the beta crystal PP-H, PP-B, PP-R, β crystal PP-RCT pipe hydrostatic test to do The description (see 9.4.1); --- Modify the normal inspection once sampling plan, the quality level of qualified 6.5 to receive quality limit (AQL) 4.0, an increase of "batch Wai "(see 9.4.2); --- Increased control point inspection requirements (see 9.5); --- Increased type test requirements (see 9.6.2); --- Modify the type test time requirements (see 9.6.3); --- Modify the "non-conformity batch" to "non-conforming batch (or product)" (see 9.7); --- Modify the logo of the product name (see 10.1.1); --- Mark added to the content of the batch number, non-installed pipe, with barrier pipe logo requirements (see 10.1.1); --- Removed in order to prevent confusion during use, should not be marked PN value of the terms (see.2002 version 10.1.3); --- Removed "the quality of each package is generally not more than 25kg, can also be determined according to user requirements" (see.2002 version 10.2); --- Increasing the informative appendix "This part of ISO 15874-2.2013 compared with the structural changes" (see Appendix A); --- Increasing the informative appendix "This part of ISO 15874-2.2013 technical differences and their causes" (see Appendix B); --- Added an informative appendix "System Suitability" (see Appendix D). This section uses the redrafted law to amend the use of ISO 15874-2.2013 "plastic pipe systems for hot and cold water equipment polypropylene 2 Part. Pipe "(in English). This part of ISO 15874-2.2013 compared to the structure of more adjustments. Appendix A lists the clauses and sections of this section ISO 15874-2.2013 subsection number of the control list. This section there are technical differences compared with ISO 15874-2.2013, Appendix B gives the corresponding technical differences and their causes Table. This section uses the currently valid national standards, instead of the ISO 15874-2.2013 cited documents. Please note that some of this document may be patentable. The issuing agencies of this document do not bear the responsibility of identifying these patents. This part is proposed by China National Light Industry Council. This part of the National Plastics Standardization Technical Committee (SAC/TC48) centralized. The main drafting units in this section. Shanghai White Butterfly Pipe Technology Co., Ltd., Zhejiang Weixing New Building Materials Co., Ltd., Wing High Unit Co., Ltd., Zibo Jie Lin Plastic Pipe Co., Ltd., Chengdu Chuan Road Plastic Group Co., Ltd., Rifeng Enterprise Group Co., Ltd., Icahn enterprises Industry Group (Shanghai) Co., Ltd., Wuhan Jinniu Economic Development Co., Ltd., Jinde Management Group Co., Ltd., National Machinery GM shares Co., Ltd., Hebei Baolu Qixing Plastic Co., Ltd., Beijing Technology and Business University, Shanghai Tianli Industrial (Group) Co., Ltd. The main drafters of this section. Chai Gang, Li Dazhi, Huang Jian, Xu Hong Yue, Zhu Liping, Xie Jianling, Jia Lirong, Li Baiqian, Qiu Qiang, Tu Xiangqun, Wang Shiliang, Xiang Aimin, Wu Wenli. This part replaces the standards previously issued as. --- GB/T 18742.2-2002. Hot and cold water with polypropylene pipe system Part 2. Tubing

1 Scope

GB/T 18742 provisions of this part of the polypropylene compound as raw material, the extrusion of circular cross-section polypropylene pipe (with (Hereinafter referred to as the pipe) definition, symbols and abbreviations, materials, product classification, pipe series S value selection, requirements, test methods, inspection rules and standards Log, packaging, transportation, storage. This section with GB/T 18742.1, GB/T 18742.3 together apply to the building hot and cold water piping systems, including drinking water and heating Pipeline system and so on. Note. It is the purchaser's responsibility to properly use this product in the light of its specific application requirements, in combination with the relevant regulations, standards or specifications. This section does not apply to fire extinguishing systems.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version applies to this article Pieces. For undated references, the latest edition (including all amendments) applies to this document. GB/T 2828.1-2012 Sampling procedures for inspection - Part 1 - Batch-by-lot inspection by acceptance quality limit (AQL) Plan (ISO 2859-1.1999, IDT) GB/T 2918-1998 plastic sample conditioning and testing of the standard environment (idtISO 291.1997) Thermoplastics - Determination of melt mass flow rate and melt volume flow rate (idtISO 1133. 1997) GB/T 6111-2003 Thermoplastics pipes for fluid transport - Internal pressure resistance test method (ISO 1167.1996, IDT) GB/T 6671-2001 Determination of longitudinal shrinkage of thermoplastic pipes (eqvISO 2505.1994) GB/T 8806-2008 Plastics piping systems - Measurement of dimensions of plastic parts (ISO 3126.2005, IDT) GB/T 9345.1-2008 Determination of plastic ash - Part 1. General method (ISO 3451-1.1997, IDT) GB/T 10798-2001 Thermoplastic plastic pipe wall thickness table (idtISO 4065.1996) Pull - off test for connection of polyethylene pressure pipes to pipe fittings GB/T 17219 drinking water distribution equipment and protective materials safety evaluation criteria GB/T 18251-2000 Polyolefin pipes, fittings and mixed materials Determination of pigment and carbon black dispersion Polypropylene piping systems for hot and cold water GB/T 18742.1-2017 - Part 1. General (ISO 15874-1.2013, MOD) Polypropylene piping systems for hot and cold water GB/T 18742.3-2017 - Part 3 - Fittings (ISO 15874-3.2013, MOD) GB/T 18743-2002 Thermoplastics pipes for the transport of fluids - Charpy impact test method (eqvISO 9854-1 ~ 9854- 2.1994) Plastics - Differential scanning calorimetry (DSC) - Part 3. Determination of temperature and enthalpy of fusion and crystallization GB/T 19466.3-2004 (ISO 11357-3.1999, IDT) GB/T 19466.6-2009 plastic differential scanning calorimetry (DSC) Part 6. Oxidation induction time (isothermal OIT) and oxygen Induction of temperature (dynamic OIT) determination (ISO 11357-6.2008, MOD) Polybutylene (PB) piping systems for hot and cold water use - Part 2. Tubes GB/T 19993-2005 Thermoplastics piping systems for hot and cold water pipes and fittings combined thermal cycling test method ......

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