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GB/T 28799.3-2020Heat-resistant polyethylene (PE-RT) piping system for hot and cold water - Part 3: Fittings (English PDF)

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Issued by

State Administration for Market Regulation, China National Standardization Administration

Level / Type

National · Recommended

Issue date

November 19, 2020

Implementation date

June 1, 2021

Scope

GB/T 28799.3-2020 (Heat-resistant polyethylene (PE-RT) piping system for hot and cold water - Part 3: Fittings) is available as an English-translated PDF.

GB/T 28799.3-2020 — This part of GB/T 28799 specifies the terms, definitions, symbols and abbreviations of heat-resistant polyethylene (PE-RT) pipe fittings (hereinafter referred to as "pipe fittings") Abbreviations, materials, product classification, requirements, system applicability, test methods, inspection rules, signs, packaging, transportation and storage. This part, together with other parts of GB/T 28799, is applicable to cold and hot water piping systems, including cold and hot water, drinking water for civil and industrial buildings. Water and heating system, hot spring pipeline system and central heating secondary pipe network system, etc. This section applies to PE-RTI and PE-RTII pipe fittings. The PE-RTI pipe fittings in this part are not suitable for hot spring piping systems and central heating secondary pipe network systems. Note. It is the responsibility of the purchaser to select this product appropriately according to its specific application requirements, combined with relevant regulations, standards or specifications.

Document preview — GB/T 28799.3-2020

National Standard of the People's Republic of China

Classification: G 33
Replacing: GB/T 28799.3-2012

Issued by: State Administration for Market Regulation, China National Standardization Administration

Foreword
4.3 of the year edition);
1 Scope
2 Normative references

Foreword

GB/T 28799 "Heat-resistant Polyethylene (PE-RT) Piping System for Hot and Cold Water" is divided into the following parts.

---Part 1.General Provisions;

---Part 2.Pipes;

---Part 3.Pipe fittings;

---Part 5.System applicability.

This part is Part 3 of GB/T 28799.

This section was drafted in accordance with the rules given in GB/T 1.1-2009.

This part replaces GB/T 28799.3-2012 "Heat-resistant polyethylene (PE-RT) piping system for cold and hot water-Part 3.Pipe fittings", and

Compared with GB/T 28799.3-2012, the main technical changes are as follows.

---Modified the scope of application of the piping system (see Chapter 1, Chapter 1 of the.2012 edition);

--- Added a trade "note" (see Chapter 1);

---Relevant normative references have been revised (see Chapter 2, Chapter 2 of the.2012 edition);

--- Added "Terms, Definitions, Symbols and Abbreviations" (see Chapter 3);

---Added the requirement of pipe fittings "recycled materials should not be used" (see 4.1);

---Added the requirements for the PE-RTII mixed ingredients used in the production of hot spring pipeline systems and central heating secondary pipe network systems (see 4.2);

---Modified product classification (see Chapter 5, Chapter 4 of the.2012 edition);

--- Deleted the content of "The pipe fittings are classified according to the pipe series S the same as the pipes, according to the provisions of GB/T 28799.2-2012" (see.2012

4.3 of the year edition);

---Modified the color regulations (see 6.1, 5.1 of the.2012 edition);

---The resistance deviation of fused pipe fittings has been increased (see 6.3);

---Modified the schematic diagram of the socket of the hot melt socket connection pipe fitting (see Figure 1, Figure 1 of the.2012 edition);

--- Modify the "reference depth of the socket" in Table 1 to "the depth of the socket" (see Table 1, Table 1 of the.2012 edition);

---Deleted "Socket heating depth size", "Maximum socket depth size" and size requirements related to "Tare" in Table 1

(See Table 1 in the.2012 edition);

--- Modified "The wall thickness of the main body of the pipe fitting should be greater than the wall thickness of the pipe of the same pipe series S" (see 6.4.5, 4.3 in the.2012 edition);

---Modified the schematic diagram of the socket of the electrofusion connection pipe fittings (see Figure 2, Figure 2 of the.2012 edition);

---Expanded the socket size of the electrofusion connection pipe fittings from the nominal outer diameter dn160mm to dn450mm and increased the relevant dimensions (see

Table 2);

---The maximum average inner diameter size of the melting zone has been increased, and the maximum socket depth size of dn16mm~dn160mm has been modified (see table

2, Table 2 of the.2012 edition);

---Added the requirements for the size of the socket end of the pipe fitting (see 6.4.3);

---Added the requirements of flange connection pipe size (see 6.4.4.2);

--- Increased the ash content of the pipe fittings, oxidation induction time, oxidation induction time after 95 degrees C/1000h hydrostatic test, and pigment dispersion

Physical and chemical properties (see Table 6);

---Adjust the system applicability into a separate chapter, and delete the specific content of the system applicability requirements (see Chapter 7,.2012 edition

5.7);

---Modified the test method (see Chapter 8, Chapter 6 of the.2012 edition);

---Modified the group batch (see 9.2.1, 7.2.1 of the.2012 edition);

---Modified the grouping (see 9.2.2, 7.2.2 of the.2012 edition);

---Modified the requirements for type inspection (see 9.3, 7.3 of the.2012 edition);

---Modified the item requirements of factory inspection (see 9.4.1, 7.4.1 of the.2012 edition);

---Modified the batch range of the sampling plan (see 9.4.2, 7.4.2 of the.2012 edition);

---Modified the requirements for type inspection (see 9.5, 7.5 in the.2012 edition);

---Modified the judgment rules (see 9.6, 7.6 of the.2012 edition);

--- The requirements for marking, packaging, transportation and storage have been revised (see Chapter 10, Chapter 8 of the.2012 edition).

This part uses the redrafting method to refer to ISO 22391-3.2009 "Heat-resistant polyethylene for plastic piping systems for cold and hot water (PE-RT)

Part 3.Pipe Fittings, the degree of consistency with ISO 22391-3.2009 is not equivalent.

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 part was proposed by the China National Light Industry Council.

This part is under the jurisdiction of the National Plastic Products Standardization Technical Committee (SAC/TC48).

Drafting organizations of this section. Shanghai Baidie Pipe Industry Technology Co., Ltd., Yonggao Co., Ltd., Guangdong Liansu Technology Industry Co., Ltd.

Company, Fujian Hengjie Plastic New Material Co., Ltd., Tianjin Junxing Pipe Industry Group Co., Ltd., Shanghai Tianli Industry (Group) Co., Ltd., Zhejiang Zhong

Pipeline Technology Co., Ltd., Wuhan Century Jinniu Pipe Fitting Technology Co., Ltd., Hongyue Plastic Group Co., Ltd., Jinde Pipe Industry Group

Group Co., Ltd., Ningbo Yuhua Electric Co., Ltd., Hebei Sheng Plastic Industry Co., Ltd., Xi'an Sulong Welding Equipment Co., Ltd.

1 Scope

This part of GB/T 28799 specifies the terms, definitions, symbols and abbreviations of heat-resistant polyethylene (PE-RT) pipe fittings (hereinafter referred to as "pipe fittings")

Abbreviations, materials, product classification, requirements, system applicability, test methods, inspection rules, signs, packaging, transportation and storage.

This part, together with other parts of GB/T 28799, is applicable to cold and hot water piping systems, including cold and hot water, drinking water for civil and industrial buildings.

Water and heating system, hot spring pipeline system and central heating secondary pipe network system, etc.

This section applies to PE-RTI and PE-RTII pipe fittings.

The PE-RTI pipe fittings in this part are not suitable for hot spring piping systems and central heating secondary pipe network systems.

Note. It is the responsibility of the purchaser to select this product appropriately according to its specific application requirements, combined with relevant regulations, standards or specifications.

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 article

Pieces. For undated references, the latest version (including all amendments) applies to this document.

GB/T 2828.1 Sampling inspection procedure by attributes Part 1.Batch inspection sampling plan retrieved by acceptance quality limit (AQL)

(GB/T 2828.1-2012, ISO 2859-1.1999, IDT)

GB/T 2918 Standard environment for condition adjustment and testing of plastic specimens (GB/T 2918-2018, ISO 291.2008, MOD)

GB/T 3682.1 Determination of Melt Mass Flow Rate (MFR) and Melt Volume Flow Rate (MVR) of Plastic Thermoplastics

Part 1.Standard method (GB/T 3682.1-2018, ISO 1133-1.2011, MOD)

GB/T 6111-2018 Determination of internal pressure resistance of thermoplastic piping systems for fluid transportation (ISO 1167-1.2006,

ISO 1167-2.2006, ISO 1167-3.2007, ISO 1167-4.2007, NEQ)

GB/T 7306.1 55° sealed pipe thread Part 1.Cylindrical internal thread and tapered external thread (GB/T 7306.1-2000,

eqvISO 7-1.1994)

GB/T 7306.2 55° Sealed Pipe Thread Part 2.Conical Internal Thread and Conical External Thread (GB/T 7306.2-2000,

eqvISO 7-1.1994)

GB/T 8806 Plastic piping system plastic parts size determination (GB/T 8806-2008, ISO 3126.2005, IDT)

GB/T 9345.1 Determination of ash content of plastics Part 1.General methods (GB/T 9345.1-2008, ISO 3451-1.1997,

IDT)

GB/T 17219 Safety evaluation standard for drinking water distribution equipment and protective materials

GB/T 18251 Determination of pigment or carbon black dispersion in polyolefin pipes, pipe fittings and mixtures (GB/T 18251-2019,

ISO 18553.2002, MOD)

GB/T 19278-2018 General terms and definitions for thermoplastic pipes, fittings and valves

GB/T 19466.6 Plastic Differential Scanning Calorimetry (DSC) Part 6.Oxidation Induction Time (Isothermal OIT) and Oxidation Induction

Determination of temperature (dynamic OIT) (GB/T 19466.6-2009, ISO 11357-6.2008, MOD)

GB/T 21300 Determination of the opacity of plastic pipes and fittings (GB/T 21300-2007, ISO 7686.2005, IDT)

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — all pages — is available in the English PDF.

Referenced standards

Normative references

ISO 2859 · GB/T 2918 · GB/T 2918-2018 · ISO 291.2008 · GB/T 3682.1 · GB/T 3682.1-2018 · ISO 1133 · GB/T 6111-2018 · ISO 1167 · GB/T 7306.1 · GB/T 7306.1-2000 · GB/T 7306.2 · GB/T 7306.2-2000 · GB/T 8806 · GB/T 8806-2008 · ISO 3126.2005 · GB/T 9345.1 · GB/T 9345.1-2008 · ISO 3451 · GB/T 18251 · GB/T 18251-2019 · ISO 18553.2002 · GB/T 19466.6 · GB/T 19466.6-2009 · ISO 11357 · GB/T 21300 · GB/T 21300-2007 · ISO 7686.2005

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