1.0.1 This code is formulated with a view to making technical advancement, economic feasibility and safety & health, and guaranteeing quality in the design, construction and acceptance of water supply polypropylene pipeline engineering for building.
1.0.2 This code is be applicable to the design, construction and acceptance of domestic water, hot water and drinking water clean piping systems for new, extended and rebuilt industrial and civil buildings. Water supply polypropylene pipelines for buildings shall not be connected with fire water supply pipeline in buildings.
The design pressure of random copolymerization polypropylene (PP-R) pipeline system should not be larger than 1.0 MPa, and the design temperature shall not be lower than 0℃ and not be higher than 70 ℃; the impact resistance copolymerization polypropylene (PP-B) pipeline system should not be larger than 1.0MPa and the design temperature shall not be lower than 0℃ and not be higher than 40℃.
1.0.3 Polypropylene pipes and pipe fittings applied in this code shall meet the requirements of the national standard "Polypropylene piping systems for hot and cold water installation" GB/T 18742.
1.0.4 The design, construction and acceptance of water supply polypropylene pipeline engineering for building shall meet the requirements of the relevant current standards and codes of the country and the industry, besides this code.
Contents
1 General Principles
2 Terms and Symbols
2.1 Terms
2.2 Symbols
3 Materials
3.1 General Requirements
3.2 Water Quality Requirement
4 Design
4.1 General Requirements
4.2 Pipeline Layout and Laying
4.3 Deformation computation and compensation measures of pipes
4.4 Hydraulic Calculation of Pipeline
4.5 Frost prevention, heat shielding, thermal insulation and dew proofing
5 Construction and installation
5.1 General Requirements
5.2 Storage and transport
5.3 Pipeline Laying
5.4 Pipe connection
5.5 Installation of Supporter and Hanger
5.6 Pressure Test
5.7 Cleaning and Disinfecting
5.8 Safe Construction
6 Inspection and Acceptance
6.1 General Requirements
6.2 Pressure Test
6.3 Acceptance
Appendix A Allowable Maximum Pressure 0f Pipe Materials at Different Temperatures
Appendix B Hydraulic Calculation Tables
Explanation of Wording in This Code
