GB/T 48034-2026Ultra-high-molecular-weight polyethylene (PE-UHMW) lining pipes (English PDF)

Foreword

This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1: Structure and Drafting Rules of Standardization Documents".

1 Scope

This document specifies the materials, classification, and marking of ultra-high molecular weight polyethylene (PE-UHMW) liner pipes (hereinafter referred to as "liner pipes").

This document applies to the inner lining pipe inserted into the base pipe for the preparation of PE-UHMW composite pipes. This type of composite pipe is used in oilfield oil production and other applications.

Oilfield engineering projects such as oil and water pipelines and injection wells, as well as coal slurry, tailings slurry and fine sand slurry transportation in industrial coal mines, power plant ash and slag removal, desert and salt flats... Engineering fields such as high-salinity groundwater transportation in alkaline areas.

Taking chemical resistance into account, this document also applies to the inner lining of composite pipes used in the chemical industry for conveying chemical liquids containing acids, alkalis, etc.

2 Normative references

The contents of the following documents, through normative references within the text, constitute essential provisions of this document. Dated citations are not included.

For references to documents, only the version corresponding to that date applies to this document; for undated references, the latest version (including all amendments) applies to this document.

GB/T 1033.1 Determination of density of non-foamed plastics - Part 1: Impregnation method, liquid pyrometer method and titration method

GB/T 1033.2 Determination of density of non-foamed plastics - Part 2: Density gradient column method

GB/T 1040.2 Determination of tensile properties of plastics - Part 2: Test conditions for molded and extruded plastics

GB/T 1633 Determination of Vicat softening temperature (VST) of thermoplastic plastics

GB/T 2828.1 Sampling Procedures for Inspection by Attributes - Part 1: Sampling Schemes Retrieved by Acceptable Quality Limit (AQL) for Lot-by-Lot Inspection

GB/T 2918 Standard Environment for Conditioning and Testing of Plastic Specimens

GB/T 6671 Determination of longitudinal shrinkage rate of thermoplastic pipes

GB/T 8802 Determination of Vicat softening temperature of thermoplastic pipes and fittings

GB/T 8804.3 Determination of tensile properties of thermoplastic pipes - Part 3: Polyolefin pipes

GB/T 8806 Determination of dimensions of plastic components in plastic piping systems

GB/T 17219 Safety Evaluation Standard for Drinking Water Transmission and Distribution Equipment and Protective Materials

GB/T 18743.2 Determination of impact strength of simply supported beams for thermoplastic pipes - Part 2: Test conditions for pipes made of different materials

GB/T 19278 General Terminology and Definitions for Thermoplastic Pipes, Fittings and Valves

GB/T 19466.6 Differential Scanning Calorimetry (DSC) for Plastics - Part 6: Oxidation Induction Time (Isothermal OIT) and Oxidation Induction Temperature (Dynamic OIT) Measurement

GB/T 21461.2-2023 Plastics - Ultra-high molecular weight polyethylene (PE-UHMW) molding and extrusion materials - Part 2: Samples Preparation and performance determination

GB/T 32679 Ultra-high molecular weight polyethylene (PE-UHMW) resin

GB/T 34903.1 Nonmetallic materials in contact with media related to petroleum, petrochemical and natural gas industries and oil and gas extraction - Part 1: Thermal plastics

GB/T 44317-2024 Thermoplastic-lined oil pipes

GB/T 48043.2 Preliminary evaluation of chemical resistance of thermoplastic piping systems - Part 2: Polyolefin pipes and components