GB/T 3003-2017 in English

GB/T 3003—2017 Standard Overview

GB/T 3003—2017 "Refractory Fibers and Products" is an important specification in the field of refractory materials, replacing the original GB/T 3003—2006 version. This standard specifies in detail the terminology, classification, grading, marking, technical requirements, test methods, etc. of refractory fibers and their products, and is applicable to a variety of refractory fiber products.

Main Changes and Background

Compared with the old version of the standard, GB/T 3003-2017 introduces a number of important updates, including:

• Added definitions of terms such as alkaline earth silicate fiber and aluminum silicate fiber
• Modified the classification method of refractory fiber products
• Added biosolubility indicators and measurement methods
• Optimized dimensional deviation and physical property requirements

These changes reflect the advancement of industry technology and the improvement of product performance requirements.

Classification and grading of refractory fibers

Technical requirements and test methods

The standard specifies the technical indicators of different refractory fiber products, including:

• Heating permanent line change: soft products ≤4%, hard products ≤3%
• Tensile strength: ≥30 kPa (depending on the product type)
• Thermal conductivity: data within the use temperature range must be provided

The test methods cover appearance inspection, physical and chemical performance testing, etc. to ensure product quality.

Implementation suggestions and precautions

In actual applications, it is recommended to:

1. Select the appropriate grade of refractory fiber products according to the conditions of use
2. Strictly conduct quality inspection in accordance with standards
3. Pay attention to moisture and sun protection during storage
4. Wear protective equipment during construction to avoid dust contact