Refractory Materials Testing

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Insulating Refractory Products Testing

The development of insulating refractories in China began in the mid-to-late 20th century. Since the beginning of this century, as national requirements for improving industrial kiln energy efficiency and low-carbon transformation have continuously increased, insulating refractory products—characterized by excellent thermal insulation performance, low thermal conductivity, and lightweight properties—have been widely promoted in industries such as metallurgy, petrochemicals, ceramics, and electric power. In recent years, with the growing demand for energy saving and precise temperature control in high-temperature industries, a series of high-performance products—such as alumina hollow sphere bricks, mullite lightweight bricks, ceramic fiber modules, and nano-microporous insulation boards—have driven the industry into a new stage of innovation-driven development. Since 2019, the industry's annual growth rate has consistently remained at no less than 15%, making China the world's primary R&D, production, and application market for insulating refractory products.

We have a professional thermal performance testing and application technology team. According to the usage requirements of different scenarios (industrial kilns, building exterior walls, special equipment), we can provide you with targeted testing and optimization solutions for thermal conductivity, thermal stability, structural design, and other aspects, helping your product stand out in the field of energy saving and consumption reduction.

Testing Products

Refractory Fibers and Products

Aluminosilicate Wool for Thermal Insulation and Their Products

Test Methods for Mineral Wool and Their Products

Rock Wool, Slag Wool and Their Products for Thermal Insulation

Fireclay Insulating Refractory Bricks

High-Alumina Insulating Refractory Bricks

Calcium Silicate Insulating Products

Mullite Insulating Refractory Bricks

Silica Insulating Refractory Bricks

Testing Items

Tensile Strength

Permanent Linear Change on Heating (Reheat Change)

Resilience (Recovery)

Compressive Strength (Compression Strength)

Bulk Density

Shot Content (Coarse Particle/Grain Content)

Thermal Conductivity

Thermal Shock Resistance

True Porosity

Dimensions

Cold Crushing Strength (CCS)

Water Repellency Rate (Hydrophobicity)

Moisture Content

Hygroscopicity (Water Absorption/Humidity Absorption)

Organic Matter Content

Mean Fiber Diameter

pH Value

Acidity Coefficient

Chemical Composition

Testing Standards

Refractory Fibers and Products (Aluminosilicate fibers, polycrystalline fibers, refractory fiber bulk, refractory fiber blankets, refractory fiber felts, refractory fiber modules):

GB/T 3003-2017

Aluminosilicate Wool for Thermal Insulation and Their Products (Aluminosilicate wool boards, felts, needled blankets, pipe sections):

GB/T 16400-2023

Test Methods for Mineral Wool and Their Products (Mineral wool boards, felts, products):

GB/T 5480-2017

Rock Wool, Slag Wool and Their Products for Thermal Insulation (Rock wool facings products, slag wool facings products, stitched mats):

GB/T 11835-2016

Fireclay Insulating Refractory Bricks:

GB/T 3994-2013

High-Alumina Insulating Refractory Bricks (Low-iron high-alumina insulating refractory bricks, ordinary high-alumina insulating refractory bricks):

GB/T 3995-2014

Calcium Silicate Insulating Products:

GB/T 10699-2015

Mullite Insulating Refractory Bricks:

GB/T 35845-2018

Silica Insulating Refractory Bricks:

YB/T 386-2020

Service Advantages

The National Center for Quality Supervision and Testing of Refractory Materials of Building Materials Industry was established in 1989, and the National Center for Quality Inspection and Testing of Refractory Materials (Beijing) was established in 2018, focusing on insulating refractory product performance testing for over 30 years.

The center is a domestic, authoritative, professional testing institution for refractory and thermal insulation materials, capable of comprehensive testing for refractories and thermal insulations used in high-temperature industries such as cement, glass, steel, non-ferrous metals, petrochemicals, power generation, and waste incineration.

The center has extensive experience in formulating and revising refractory product and method standards, benchmarking refractory product quality, controlling production quality, analyzing and evaluating service life damage, and resolving quality disputes.

The center covers an area of over 1,100 square meters, equipped with advanced testing instruments, of which approximately 60% are imported, making it one of the most influential national refractory material quality inspection centers in China.