GB/T 41666.7-2024Plastics piping systems for renovation of underground non-pressure drainage and sewerage networks - Part 7: Lining with spirally-wound pipes (English PDF)

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1: Structure and drafting rules for standardization documents" Drafting.

This document is Part 7 of GB/T 41666 "Plastic Piping Systems for Trenchless Repair of Underground Non-pressure Drainage Networks".

The following parts have been published.

--- Part 3: Tight fitting lining method;

--- Part 4: In-situ curing lining method;

--- Part 7: Spiral wound lining method.

This document is modified to adopt ISO 11296-7:2019 "Plastic piping systems for trenchless repair of underground non-pressure drainage networks Part 7.

Spiral Wrap Lining Method.

Compared with ISO 11296-7:2019, this document has many structural adjustments. The structural number changes between the two documents are listed below.

See Appendix A for the table.

This document has many technical differences compared to ISO 11296-7:2019.

A list of these technical differences and their reasons is given in Appendix B.

The following editorial changes were made to this document.

--- Deleted the informative Appendix B of ISO 11296-7:2019 "Methods for reconnecting and sealing branches to spirally wound pipes" Example".

Introduction

In order to standardize the application of plastic pipe systems in trenchless repair work in different application fields, GB/T 37862 "Plastic pipe systems for trenchless repair" is introduced.

On the basis of the General Principles for Plastic Pipelines, it is planned to gradually establish a standard system for plastic pipe systems for pipeline repair. The basic framework is shown in Figure 1.

Figure 1 Framework of the trenchless repair standard system

Each of the above technical series includes a general principle (Part 1) and several parts corresponding to specific methods.

Used in conjunction with Part 1 (General). Not all technical (process) standards are applicable to all application areas, so different technical series standards the components of the standard vary.

GB/T 41666 "Plastic Pipe Systems for Trenchless Repair of Underground Non-pressure Drainage Networks" is intended to define the requirements for trenchless repair of underground non-pressure drainage pipelines.

The working criteria and technical requirements for applicable materials of various repair technologies during the production, construction and acceptance stages are intended to be composed of the following parts.

--- Part 1: General. The purpose is to establish the requirements for plastic pipe systems used for trenchless repair of underground non-pressure drainage networks.

General requirements, overarching principles and relevant rules to be followed.

--- Part 2: Continuous interlaced lining method. The purpose is to clarify the applicable materials of the continuous interlaced lining method in production, manufacturing and construction inspection.

Technical requirements for the collection phase.

--- Part 3: Tight fitting lining method. The purpose is to clarify the applicable materials of the tight fitting lining method in production, manufacturing and construction inspection.

Technical requirements for the collection phase.

--- Part 4: In-situ curing lining method. The purpose is to clarify the applicable materials of the in-situ curing lining method in production, manufacturing and construction Technical requirements for the collection phase.

--- Part 5: Short pipe interspersed lining method. The purpose is to clarify the applicable materials of the short pipe interspersed lining method in production, manufacturing and construction inspection.

Technical requirements for the collection phase.

--- Part 7: Spiral wound lining method. The purpose is to clarify the applicable materials of the spiral wound lining method in production, manufacturing and construction inspection.

Technical requirements for the collection phase.

--- Part 9: Rigid anchor plastic lining method. The purpose is to clarify the applicable materials of the rigid anchor plastic lining method in the production and manufacturing and technical requirements for the construction acceptance phase.

Plastic pipes for trenchless repair of underground non-pressure drainage networks Systems Part 7: Spiral wound lining method

1 Scope

This document specifies the "M" stage of strip profiles and the "I" stage of liner pipes used for the repair of underground non-pressure sewer networks by spiral wound lining.

The technical requirements, key points of quality control for engineering construction and acceptance, and the test methods for performance requirements are described.

This document applies to unplasticized polyvinyl chloride (PVC-U) spiral wound pipes for repairing underground non-pressure drainage pipes by spiral wound lining method.

The pipeline system includes the production of strip profiles and the on-site construction and acceptance of liner pipes.

Note 1.The spiral winding lining construction equipment includes two types. fixed type (A method) and walking type (B method). The fixed winding machine works in the working pit.

The liner is pushed forward along the original pipeline; the mobile winding machine moves in the original pipeline as the spiral liner is formed. According to the liner diameter control plan, usually the fixed spiral winding method is further divided into A1 method (fixed-sizing type), A2 method (expansion type), and B method (head-traveling type).

Note 2.The technical content of this document is based on PVC-U strip profiles with an integrated locking structure and their spirally wound liner pipes.

2 Normative references

The contents of the following documents constitute the essential clauses of this document through normative references in this document.

For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to this document.

GB/T 528 Determination of tensile stress-strain properties of vulcanized rubber or thermoplastic rubber (GB/T 528-2009, ISO 37.

2005, IDT)

GB/T 531.1 Test method for indentation hardness of vulcanized rubber or thermoplastic rubber Part 1: Shore hardness tester method (Shore hardness) (GB/T 531.1-2008,ISO 7619-1:2004,IDT) GB/T 1033.1 Plastics - Determination of density of non-cellular plastics - Part 1: Immersion method, liquid pycnometer method and titration method (GB/T 1033.1-2008,ISO 1183-1:2004,IDT) GB/T 1040.2 Determination of tensile properties of plastics Part 2: Test conditions for moulding and extruded plastics (GB/T 1040.2-2022,ISO 527-2:2012,MOD) GB/T 1043.1 Determination of impact properties of simply supported plastic beams Part 1: Non-instrumented impact test (GB/T 1043.1-2008,ISO 179-1:2000,IDT) GB/T 1633 Determination of Vicat softening temperature (VST) of thermoplastics (GB/T 1633-2000, idt ISO 306:1994) GB/T 8806 Plastic piping systems - Determination of dimensions of plastic parts (GB/T 8806-2008, ISO 3126:2005, IDT) GB/T 9647 Determination of ring stiffness of thermoplastic pipes (GB/T 9647-2015, ISO 9969:2007, IDT) GB/T 13304.2 Steel classification Part 2: Classification according to main quality grades and main properties or use characteristics (GB/T 13304.2-2008,ISO 4948-2:1981,MOD) GB/T 18042 Test method for creep rate of thermoplastic pipes (GB/T 18042-2000, eqvISO 9967.1994) GB/T 19278 General terms and definitions for thermoplastic pipes, fittings and valves GB/T 37862 General principles for plastic pipes for trenchless repair (GB/T 37862-2019, ISO 11295:2017, MOD) GB 50268-2008 Code for construction and acceptance of water supply and drainage pipeline projects CJJ/T 210-2014 Technical specification for trenchless repair and renewal of urban drainage pipelines ISO 13262 Thermoplastics piping systems for non-pressure underground drainage and sewerage - Thermoplastic spiral-formed wall pipes - Tensile strength of joints