GB/T 20415-2025Rubber- or plastic-coated fabrics - Insulating tape (English PDF)
橡胶或塑料涂覆制品 绝缘带
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
October 5, 2025
Implementation date
May 1, 2026
Scope
GB/T 20415-2025 is the English-translated version of 橡胶或塑料涂覆制品 绝缘带.
GB/T 20415-2025 is the Chinese standard "Rubber- or plastic-coated fabrics - Insulating tape". Its scope clause reads: This document defines the terms and definitions for insulating tapes used in electrical applications with rubber or plastic coatings, specifies the requirements, sampling and testing methods, and inspection procedures.
Inspection rules and requirements for marking, packaging, transportation and storage.
This document applies to insulating tapes (hereinafter referred to as insulating tapes) for electrical applications using rubber or plastic coated products, which can operate in temperature environments ranging from -10°C to 40°C. Electrical insulation for China Power Supply at voltages of 380V and below, insulation and bundling of wire and cable joints. Its clauses include terms and definitions.
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Document preview — GB/T 20415-2025
National Standard of the People's Republic of China
- ICS
- 59.080.40
- Classification
- G 42
- Replacing
- GB 20415-2006
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- Foreword
- 1 Scope
- 2 Normative references
1 Scope
This document defines the terms and definitions for insulating tapes used in electrical applications with rubber or plastic coatings, specifies the requirements, sampling and testing methods, and inspection procedures.
Inspection rules and requirements for marking, packaging, transportation and storage.
This document applies to insulating tapes (hereinafter referred to as insulating tapes) for electrical applications using rubber or plastic coated products, which can operate in temperature environments ranging from -10°C to 40°C.
Electrical insulation for China Power Supply at voltages of 380V and below, insulation and bundling of wire and cable joints.
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.
This document.
GB/T 191-2008 Pictorial Symbols for Packaging and Storage
GB/T 1408.1-2016 Electrical strength test methods for insulating materials - Part 1.Tests at power frequency
GB/T 4850 Determination of Low-Speed Unwinding Strength of Pressure-Sensitive Adhesive Tapes
GB/T 20631.2-2006 Electrical pressure-sensitive adhesive tapes - Part 2.Test methods
GB/T 24133-2009 Standard Environment for Conditioning and Testing of Rubber or Plastic Coated Fabrics
3 Terms and Definitions
The following terms and definitions apply to this document.
3.1 Gapping on the plate
The phenomenon of partial phase separation between the layers of the insulating tape reel, resulting in gaps at the end face of the reel-shaped insulating tape.
3.2 rough edges
The insulation tape has fine, uncut fibers of the substrate at its edges.
Note. Also known as double knife marks.
3.3 uneven weaving
The edges of the layers on the end face of the insulating tape reel are not in the same plane, resulting in an uneven end face of the insulating tape reel.
3.4 Concave (convex) core offcore
The end face of the coiled insulating tape is not on the same plane as the core, causing the core to be concave (convex).
3.5 blemish
The phenomenon that the coating quality of fabrics has local defects due to yarn knots, missing yarns, broken yarns, etc. […]
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 17 pages — is available in the English PDF.
Referenced standards
Normative references
- GB/T 191-2008Graphical symbols marking for handling and storage of packages
- GB/T 1408.1-2016Insulating materials -- Test methods for electric strength -- Part 1: Test at power frequencies
- GB/T 4850Test method for unwinding force of pressure sensitive adhesive tapes at low speed
- GB/T 20631.2-2006Pressure sensitive adhesive tapes for electrical purposes -- Part 2: Methods of test
- GB/T 24133-2009Rubber-or plastics-coated fabrics -- Standard atmospheres for conditioning and testing
Editions of GB/T 20415
| Edition | Title | Revision | Status |
|---|---|---|---|
| GB/T 20415-2025 | Rubber-or plastic-coated fabrics - Insulating tape | current edition | Current |
| GB 20415-2006 | Rubber -- Coated fabric -- Isolating tape | previous edition | In force |
This page sells the current edition, GB/T 20415-2025. Earlier editions are listed for reference only.
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Related Standards
GB/T 1408.1-2016 — Insulating materials -- Test methods for electric strength -- Part 1: Test at power frequencies
GB/T 20631.2-2006 — Pressure sensitive adhesive tapes for electrical purposes -- Part 2: Methods of test
GB/T 24133-2009 — Rubber-or plastics-coated fabrics -- Standard atmospheres for conditioning and testing
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