Polybutene (PB) piping systems for hot and cold water installations—Part 3: Fittings
1 Scope
This part of GB/T 19473 specifies the terms and definitions, symbols and abbreviated terms, materials, product classification, requirements, system suitability, test methods, inspection rules, marking, transportation and storage of Polybutene (PB) pipe fittings (hereinafter referred to as "fittings") using PB compound as raw materials by injection moulding.
This part, together with other parts of GB/T 19473, is applicable to hot and cold water piping systems within buildings, including those for drinking water and heating.
Note: It is the responsibility of the purchaser to make the appropriate selections from these aspects, considering their particular requirements and any relevant national regulations and standards or codes.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated reference, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 2828.1 Sampling procedures for inspection by attributes—Part 1: Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection (GB/T 2828.1-2012, ISO 2859-1: 1999, IDT)
GB/T 2918 Plastics—Standard atmospheres for conditioning and testing (GB/T 2918-2018, ISO 291: 2008, MOD)
GB/T 3682.1 Plastics—Determination of the melt mass-flow rate (MFR) and melt volume-flow rate (MVR) of thermoplastics—Part 1: Standard method (GB/T 3682.1-2018, ISO 1133-1: 2011, MOD)
GB/T 6111-2018 Thermoplastics piping systems for the conveyance of fluids—Determination of the resistance to internal pressure (ISO 1167-1: 2006; ISO 1167-2: 2006; ISO 1167-3: 2007; ISO 1167-4: 2007, NEQ)
GB/T 7306 (all parts) Pipe threads with 55 degree thread angle where pressure-tight joints are made on the threads [ISO 7-1]
GB/T 8806 Plastics piping systems—Plastics components—Determination of dimensions (GB/T 8806-2008, ISO 3126: 2005, IDT)
GB/T 9345.1 Plastics—Determination of ash—Part 1: General methods (GB/T 9345.1-2008, ISO 3451-1: 1997, IDT)
GB/T 17219 Standard for safety evaluation of equipment and protective materials in drinking water system
GB/T 18251 Method for the assessment of the degree of pigment or carbon black dispersion in polyolefin pipes, fittings and compounds (GB/T 18251-2019, ISO 18553: 2002, MOD)
GB/T 19278-2018 General terms and their definitions of thermoplastic pipes, fittings and valves
GB/T 19466.6 Plastics—Differential scanning calorimetry (DSC)—Part 6: Determination of oxidation induction time (isothermal OIT) and oxidation induction temperature (dynamic OIT) (GB/T 19466.6-2009, ISO 11357-6: 2008, MOD)
GB/T 19473.1-2020 Polybutene (PB) piping systems for hot and cold water installations—Part 1: General (ISO 15876-1: 2017, MOD)
GB/T 19473.2-2020 Polybutene (PB) piping systems for hot and cold water installations—Part 2: Pipes (ISO 15876-2: 2017, MOD)
GB/T 19473.5-2020 Polybutene (PB) piping systems for hot and cold water installations—Part 5: Fitness for purpose of the system (ISO 15876-5: 2017, MOD)
GB/T 21300 Plastics pipes and fittings—Determination of opacity (GB/T 21300-2007, ISO 7686: 2005, IDT)
3 Terms and definitions, symbols and abbreviated terms
For the purposes of this document, the terms and definitions, symbols and abbreviated terms given in GB/T 19473.1-2020 and GB/T 19278-2018 apply.
4 Materials
4.1 The PB compound graded in accordance with GB/T 19473.1-2020, Clause 5 shall be used for fitting production.
4.2 The metal materials and sealing materials of pipe fittings in contact with PB materials or water during use shall not adversely affect the water quality and shall not cause degradation or aging of plastic piping materials.
4.3 The reprocessable materials shall not be used in fittings production.
Foreword i
1 Scope
2 Normative references
3 Terms and definitions, symbols and abbreviated terms
4 Materials
5 Product classification
6 Requirements
7 System applicability
8 Test methods
9 Inspection rules
10 Marking, packaging, transport and storage
Annex A (Informative) Structural changes of this part with respect to ISO 15876-3: 2017
Annex B (Informative) Technical differences between this part and ISO 15876-3: 2017 and their causes
Bibliography
Polybutene (PB) piping systems for hot and cold water installations—Part 3: Fittings
1 Scope
This part of GB/T 19473 specifies the terms and definitions, symbols and abbreviated terms, materials, product classification, requirements, system suitability, test methods, inspection rules, marking, transportation and storage of Polybutene (PB) pipe fittings (hereinafter referred to as "fittings") using PB compound as raw materials by injection moulding.
This part, together with other parts of GB/T 19473, is applicable to hot and cold water piping systems within buildings, including those for drinking water and heating.
Note: It is the responsibility of the purchaser to make the appropriate selections from these aspects, considering their particular requirements and any relevant national regulations and standards or codes.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated reference, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 2828.1 Sampling procedures for inspection by attributes—Part 1: Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection (GB/T 2828.1-2012, ISO 2859-1: 1999, IDT)
GB/T 2918 Plastics—Standard atmospheres for conditioning and testing (GB/T 2918-2018, ISO 291: 2008, MOD)
GB/T 3682.1 Plastics—Determination of the melt mass-flow rate (MFR) and melt volume-flow rate (MVR) of thermoplastics—Part 1: Standard method (GB/T 3682.1-2018, ISO 1133-1: 2011, MOD)
GB/T 6111-2018 Thermoplastics piping systems for the conveyance of fluids—Determination of the resistance to internal pressure (ISO 1167-1: 2006; ISO 1167-2: 2006; ISO 1167-3: 2007; ISO 1167-4: 2007, NEQ)
GB/T 7306 (all parts) Pipe threads with 55 degree thread angle where pressure-tight joints are made on the threads [ISO 7-1]
GB/T 8806 Plastics piping systems—Plastics components—Determination of dimensions (GB/T 8806-2008, ISO 3126: 2005, IDT)
GB/T 9345.1 Plastics—Determination of ash—Part 1: General methods (GB/T 9345.1-2008, ISO 3451-1: 1997, IDT)
GB/T 17219 Standard for safety evaluation of equipment and protective materials in drinking water system
GB/T 18251 Method for the assessment of the degree of pigment or carbon black dispersion in polyolefin pipes, fittings and compounds (GB/T 18251-2019, ISO 18553: 2002, MOD)
GB/T 19278-2018 General terms and their definitions of thermoplastic pipes, fittings and valves
GB/T 19466.6 Plastics—Differential scanning calorimetry (DSC)—Part 6: Determination of oxidation induction time (isothermal OIT) and oxidation induction temperature (dynamic OIT) (GB/T 19466.6-2009, ISO 11357-6: 2008, MOD)
GB/T 19473.1-2020 Polybutene (PB) piping systems for hot and cold water installations—Part 1: General (ISO 15876-1: 2017, MOD)
GB/T 19473.2-2020 Polybutene (PB) piping systems for hot and cold water installations—Part 2: Pipes (ISO 15876-2: 2017, MOD)
GB/T 19473.5-2020 Polybutene (PB) piping systems for hot and cold water installations—Part 5: Fitness for purpose of the system (ISO 15876-5: 2017, MOD)
GB/T 21300 Plastics pipes and fittings—Determination of opacity (GB/T 21300-2007, ISO 7686: 2005, IDT)
3 Terms and definitions, symbols and abbreviated terms
For the purposes of this document, the terms and definitions, symbols and abbreviated terms given in GB/T 19473.1-2020 and GB/T 19278-2018 apply.
4 Materials
4.1 The PB compound graded in accordance with GB/T 19473.1-2020, Clause 5 shall be used for fitting production.
4.2 The metal materials and sealing materials of pipe fittings in contact with PB materials or water during use shall not adversely affect the water quality and shall not cause degradation or aging of plastic piping materials.
4.3 The reprocessable materials shall not be used in fittings production.
Contents of GB/T 19473.3-2020
Foreword i
1 Scope
2 Normative references
3 Terms and definitions, symbols and abbreviated terms
4 Materials
5 Product classification
6 Requirements
7 System applicability
8 Test methods
9 Inspection rules
10 Marking, packaging, transport and storage
Annex A (Informative) Structural changes of this part with respect to ISO 15876-3: 2017
Annex B (Informative) Technical differences between this part and ISO 15876-3: 2017 and their causes
Bibliography
