GB/T 13663.3-2018Polyethylene (PE) piping systems for water supply -- Part 3: Fittings (English PDF)

Foreword

GB/T 13663 "Polyethylene (PE) Piping System for Water Supply" is divided into five parts.

--- Part 1. General;

--- Part 2. Pipe;

---Part 3. Pipe fittings;

--- Part 4. Valves;

--- Part 5. System suitability.

This part is the third part of GB/T 13663.

This part is drafted in accordance with the rules given in GB/T 1.1-2009.

This part replaces GB/T 13663.2-2005 "Polyethylene (PE) piping system for water supply Part 2. Pipe fittings", and

Compared with GB/T 13663.2-2005, the main technical changes are as follows.

---The standard number was changed from GB/T 13663.2 to GB/T 13663.3 (see the cover of this section);

--- Increased the maximum working pressure is not more than 2.0MPa requirements, increased the note related to the reference working temperature and the purchaser (this department

Chapter 1);

--- Add and delete related terms, definitions, symbols and abbreviations and their contents, and move them into GB/T 13663.1-2017 (Chapter 3 of this part);

--- Removed PE63 grade materials and requirements; removed the basic performance requirements of materials, adjusted to GB/T 13663.1-2017

Expression (Chapter 4 of this Part);

---Modified the classification and naming related content of polyethylene compounding, deleted the PE63 grade material, and increased the mixing time of 80 °C.

The static hydrostatic strength curve is not allowed to have an inflection point before 5000h (t< 5000h) (this part 4.2)

--- Added requirements for other materials (this section 4.3.4);

--- Increased reclaimed material requirements (this section 4.4);

---Modified product classification requirements (Chapter 5 of this section);

--- Increased the requirements for the construction of welded pipe fittings; blue polyethylene pipe fittings should avoid direct exposure to ultraviolet light and be modified to blue

Color fittings are only suitable for dark coatings (section 6.2);

--- Added requirements for pipe design, factory prefabricated joints and electrical protection (this section 6.3);

--- Revised the range of resistance values of the electrofusion tube. nominal value x (1 +/- 10%) (this section 6.4);

--- Increased the size range (this section 6.5.1, 6.5.2 and 6.5.7);

--- Removed the average outer diameter grade A and special tubular length requirements for the pipe socket end dimensions (this section 6.5.1);

--- Increased the average inner diameter of the fused socket end (this part 6.5.2.1);

--- Increased the requirements for the construction of welded pipe fittings (this section 6.5.5);

--- Increased the requirements for mechanical connection pipe fittings (this section 6.5.6);

--- Mechanical and physical properties of pipe fittings removed the relevant requirements for pipe fittings made of PE63 material; hydrostatic strength (20 ° C, 100 h)

Test parameters. PE100 ring stress is changed from 12.4MPa to 12.0MPa; the welding strength requirement of fused saddle pipe fittings is increased;

Increased the requirement of ash <=0.1%; adjust the oxidation induction time of the pipe from "200 °C, >=20min" to "210°C,

>=20min" (this section 6.6 and 6.7);

--- Revised the relevant requirements of the test method (Chapter 7 of this part);

--- Increased welding strength arbitration method for 90mm~225mm fused socket fittings (this section 7.6);

--- Increased ash test method requirements (see 7.16 in this section);

---Modified the batch batch and grouping requirements (section 8.2);

--- Added list of inspection items and hygiene inspection requirements (in Section 8.3.1);

--- In the sampling plan, the acceptance quality limit (AQL) is adjusted from 6.5 to 4.0 (this part 8.3.2);

--- Type inspection increases the requirement for type inspection every three years (8.4.4 of this section);

--- The mark content of the dn >= 280mm pipe fittings has been deleted, and the mixed batch number and production batch number have been added (this part 9.2);

--- Increased packaging requirements (this section 10.1);

--- Added the normative appendix "Construction Welded Pipe Fittings" (Appendix C to this section);

--- Deleted the typical C-type connector (Appendix D in this section) in the informative appendix "Schematic terminal diagram of electrofusion fittings";

--- Added the normative appendix "Hot-melt socket fittings" (Appendix E of this section);

--- Added the normative appendix "Test Method for Welding Strength of Fused Saddle Pipe Fittings" (Appendix F of this section).

This section uses the redrafting method to modify the use of ISO 4427-3.2007 "plastic pipe system for water supply polyethylene (PE) pipe and pipe

Part 3. Pipe fittings.

This section has more structural adjustments than ISO 4427-3.2007. The section numbers in this section are listed in Appendix A.

A comparison list of chapter numbers for ISO 4427-3.2007.

This section has technical differences compared to ISO 4427-3.2007. The terms involved in these differences have been passed through the margins on their outer margins

The vertical single line (—) is marked. A list of relevant technical differences and their causes is given in Appendix B.

1 Scope

This part of GB/T 13663 stipulates the use of polyethylene (PE) compound as raw material, injection molding or other forms of water for the use of polyethylene

Terms and definitions, symbols, abbreviations, materials, product classifications, requirements, test methods, inspection rules, signs of olefin fittings (hereinafter referred to as "pipe fittings")

And packaging, transportation, storage.

This part, together with other parts of GB/T 13663, applies to water temperatures not exceeding 40 ° C, maximum working pressure (MOP) is not greater than

2.0 MPa, polyethylene pipe system and its components for general purpose pressure water delivery and drinking water distribution.

Note 1. The reference operating temperature is 20 °C. For the pressure reduction factor between 0 °C and 40 °C, refer to Appendix C of GB/T 13663.1-2017.

Note 2. It is the responsibility of the purchaser to properly select the products specified in this section according to their specific application requirements, in conjunction with relevant regulations, standards or specifications.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article.

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

GB/T 2828.1. Sampling and sampling procedures - Part 1 . Batch-to-batch sampling plan searched by the acceptance quality limit (AQL)

(GB/T 2828.1-2012, ISO 2859-1..1999, IDT)

GB/T 2918 Standard environment for conditioning and testing of plastic samples (GB/T 2918-1998, idtISO 291.1997)

GB/T 3682-2000 Determination of mass flow rate and melt volume flow rate of melts - Part 1 . Standard

Method (idtISO 1133.1997)

GB/T 4217 Nominal outer diameter and nominal pressure of thermoplastic pipes for fluid transfer (GB/T 4217-2008, ISO 161-1.

1996, IDT)

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

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

GB/T 7306.1-2000 55° sealing pipe threads - Part 1. Internal and external taper threads (eqv ISO 7-1.1994)

GB/T 7306.2-2000 55 ° sealed pipe thread - Part 2. taper and taper ( eqv ISO 7-1.1994)

GB/T 8163-2008 Seamless steel pipe for conveying fluid

GB/T 8806-2008 Determination of dimensions of plastic parts for plastics piping systems (ISO 3126.2005, IDT)

GB/T 9345.1-2008 Determination of ash - Part 1. General method (ISO 3451-1..1997, IDT)

GB/T 10798 Thermoplastic plastic pipe universal wall thickness gauge (GB/T 10798-2001, idtISO 4065.1996)

GB/T 13663.1-2017 Polyethylene (PE) piping systems for water supply - Part 1. General (ISO 4427-1.2007, MOD)

GB/T 13663.2-2018 Polyethylene (PE) piping systems for water supply - Part 2. Pipes (ISO 4427-2.2007, MOD)

GB/T 13663.5-2018 Polyethylene (PE) piping systems for water supply - Part 5. System suitability (ISO 4427-5.2007,

MOD)

GB/T 15820-1995 Tensile test for connection of polyethylene pressure pipe to pipe fittings (eqvISO 3501.1976)

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

GB/T 18252 Plastic piping system uses extrapolation method to determine the long-term hydrostatic strength of thermoplastic materials in the form of pipes

(GB/T 18252-2008, ISO 9080.2003, IDT)

GB/T 18475 Thermoplastic pressure pipes and fittings for material grading and naming overall use (design) factor

(GB/T 18475-2001, eqvISO 12162..1995)

GB/T 19278-2003 General terms and definitions for thermoplastic pipes, fittings and valves

GB/T 19466.6-2009 Plastic Differential Scanning Calorimetry (DSC) Part 6. Oxidation induction time (isothermal OIT) and oxygen

Determination of the induced temperature (dynamic OIT) (ISO 11357-6.2008, MOD)

GB/T 19712-2005 Polyethylene (PE) saddle bypass impact test method for plastic pipes and fittings (ISO 13957.1997,

IDT)

GB/T 19806-2005 Extrusion and peeling test of polyethylene electrofusion components for plastic pipes and fittings (ISO 13955.1997, IDT)

GB/T 19808-2005 Extension and stripping of polyethylene electrofusion components with a nominal outer diameter greater than or equal to 90 mm for plastic pipes and fittings

Off test (ISO 13954.1997, IDT)

GB/T 19809-2005 Preparation of hot-melt butt joints for plastic pipes and fittings, polyethylene (PE) pipes/fittings or pipes/fittings

(ISO 11414.1996, IDT)

GB/T 19810-2005 Determination of tensile strength and failure forms of hot-melt butt joints of polyethylene (PE) pipes and fittings (ISO

13953.2001, IDT)

GB/T 20674.1-2006 Plastics pipes and fittings - Polyethylene systems - Part 1 . Hot-melt joints (ISO 12176-

1.1998, MOD)

GB/T 21873-2008 Specification for interface seals for rubber seals, drains and sewers (ISO 4633.

2002, MOD)

3 Terms and definitions, symbols, abbreviations

Terms and definitions, symbols, abbreviations defined in GB/T 13663.1-2017, GB/T 13663.5-2018, GB/T 19278-2003

And the following terms and definitions apply to this document.

3.1

Nominal outer diameter nominaloutsidediameter

Dn

The specified value of the outer diameter of the pipe or fitting socket.

Note. The nominal diameter of the fitting that matches the outer diameter of the pipe is also indicated by the nominal outside diameter of the pipe.

3.2

Electrofusion socket pipe fittings electrofusionsocketfitting

a socket having one or more inner walls integrated with a heating element capable of converting electrical energy into heat energy and melting the end of the pipe or fitting

Connected polyethylene pipe fittings.

3.3

Fused saddle fittings electrofusionsaddlefitting

With saddle geometry and one or more integrated heating elements, capable of converting electrical energy into heat to achieve melting on the outer wall of the tube

Connected polyethylene pipe fittings.

3.4

Saddle-shaped bypass tappinge

An fused saddle fitting (top loading or wrapping) with an auxiliary opening branch end and a combined cutter that cuts through the walls of the main wall. in

The cutter remains in the saddle after installation. Often used for pressurized work.

Note. The saddle bypass is also known as the saddle tee and can be loaded from the top during welding or tightened around the upper surface of the saddle.

3.5

Saddle straight through branchsaddle

An fused saddle fitting that does not have an auxiliary opening branch end and usually requires an auxiliary cutting tool to drill a hole in the connected main pipe.

Note. Saddle straight is also known as a branch saddle. It can be loaded from the top during welding or fastened around the upper surface of the saddle.

3.6

Spudendend fitting with socket end fittings

Pipe fittings with socket ends. The socket end is matched with the socket, and the connecting outer diameter is equal to the branch end of the pipe nominal diameter dn.

Note. The socket end can also be welded to the pipe or fitting socket of the same specification.

3.7

Hot melt socket tube socketfusionfitting

A polyethylene pipe member having a socket structure and thermally joined to a pipe or pipe socket end by a heating tool.

3.8

Construction of welded pipe fittings fabricatedfitting

Manufactured from secondary and/or group welded pipes conforming to GB/T 13663.2-2018 and/or injection molded fittings complying with this standard

Pipe fittings.

3.9

Maximum out-of-roundness of electrofusion sockets maximumout-of-roundnessofelectrofusionsocket

The maximum value of the unroundness of the socket between the plane of the mouth opening and the plane from the mouth of the socket to the distance L21 (the length of the design insertion section).

Note. Rewrite GB/T 19278-2003, definition 3.15.

3.10

Mechanical connection type pipe fitting mechanicalfitting

A pipe that mechanically joins a polyethylene pipe to other pipe components.

Note 1. It can generally be assembled at the construction site or pre-installed by the manufacturer at the factory. Usually has a compression part to provide pressure resistance, sealing and end load resistance

Ability. The polyethylene sleeve is permanently supported by a support sleeve inserted into the interior of the nozzle to prevent the wall from creeping under radial pressure.

Note 2. The metal part of the pipe fitting can be connected to the metal pipe by means of a thread, a compression joint, a weld or a flange (including a polyethylene flange). Mechanical connection pipe fittings

Can form a detachable or permanently assembled joint. In some cases, the support sleeve can also function as a clamping ring.

3.11

Voltage regulation

In the welding process of the electrofusion tube, the way of energy supply is controlled by voltage parameters.

3.12

Current regulation

In the welding process of the electrofusion tube, the way of the energy supply is controlled by the current parameter.

4 materials

5 Product Categories

6 requirements