GB/T 43005-2023 Composite pipes of polyethylene reinforced with continuous wound glass-fiber-tape for water supply
1 Scope
This document specifies the materials, pressure reduction factor, structure and connection mode, requirements, test methods, inspection rules, marking, packaging, transportation and storage of composite pipes of polyethylene reinforced with continuous wound glass-fiber-tape for water supply (hereinafter referred to as "composite pipes").
This document is applicable to the composite pipes, with water temperature not higher than 40°C, for general purpose pressure water transmission and drinking water transmission and distribution. Considering the influence factors such as chemical resistance and temperature resistance of the materials, it is also applicable to the composite pipes for sewage transportation, seawater transportation and brine transportation in the salt chemical industry.
Note: It is the responsibility of the purchaser to make the appropriate selections from these aspects, taking into account their particular requirements and any relevant national regulations and standards or codes.
2 Normative references
The following documents contain requirements which, through reference in this text, constitute provisions of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 1040.5 Plastics - Determination of tensile properties - Part 5: Test conditions for unidirectional fibre-reinforced plastic composites
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 2918 Plastics - Standard atmospheres for conditioning and testing
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 6111 Thermoplastics piping systems for the conveyance of fluids - Determination of the resistance to internal pressure
GB/T 6671 Thermoplastics pipes - Determination of longitudinal reversion
GB/T 6672 Plastics film and sheeting - Determination of thickness by mechanical scanning
GB/T 6673 Determination of length and width of plastics film and sheeting
GB/T 8806 Plastics piping systems - Plastics components - Determination of dimensions
GB/T 9345.1 Plastics - Determination of ash - Part 1: General methods
GB/T 9647 Thermoplastics pipes - Determination of ring stiffness
GB/T 13021 Determination for the carbon black content of polyethylene pipes and fittings by calcination and pyrolysis
GB/T 13663.1 Polyethylene (PE) piping systems for water supply - Part 1: General
GB/T 15560 Standard test method for short-time hydraulic failure and resistance to constant internal pressure of the plastics pipes for the transport of fluids
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 19278 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)
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB/T 19278 and the following apply.
3.1
composite pipes of polyethylene reinforced with continuous wound glass-fiber-tape
reinforced thermoplastic composite pipes are formed by the continuous wound glass-fiber-tape alternately coiled and fused into the reinforcement windings, and the liner and cover of PE are extruded, and the liner and cover are fused into the reinforcement windings in the continuous extrusion process
3.2
liner
polymer layer formed by continuous extrusion and in direct contact with the conveying medium
3.3
reinforcement windings
main bearing structure that provides the mechanical strength of the composite pipe to meet the load requirements during operation and installation
3.4
cover
polymer layer formed by continuous extrusion and on the outside of the composite pipe
Foreword II
1 Scope
2 Normative references
3 Terms and definitions
4 Materials
5 Pressure reduction coefficient
6 Structure and connection mode
7 Requirements
8 Test method
9 Inspection rules
10 Marking, packaging, transportation and storage
Annex A (Normative) Fusion strength test of glass-fiber-tape
