What is the apparent porosity?

The apparent porosity is 20.0-22.0%.

What is the cold crushing strength?

The cold crushing strength is 40~70MPa.

Standard Refractory Hollow Brick High Alumina Checker Firebricks for Hot Blast Stove

Name: Standard Refractory Hollow Brick High Alumina Checker Firebricks for Hot Blast Stove
Brand: ZHENGZHOU RONGSHENG REFRACTORY CO., LIMITED
SKU: 2092624095

Henan, ChinaZHENGZHOU RONGSHENG REFRACTORY CO., LIMITED

US$300.00-350.00

1 Ton

Sample price:US$1.00/piece.Request sample

Product profile

Customization

Available

Application

Reverberatory Furnace

Material

China High Alumina Brick

Model NO.

high alumina checker bricks

Refractoriness (℃)

Refractoriness> 2000

Product Name

Checker Firebricks for Hot Blast Stove

Model Number

Sk36 Sk38

Apparent Porosity

20.0-22.0

Bulk Density(Kg/M3)

2.0-2.5g/cm3

Cold Crushing Strength(MPa)

40~70MPa

Refractoriness Under Load (0.2MPa)

Min 1420

Keyword

Refractory Checker Bricks

Certificate

ISO9001 CE

Al2O3 Content (%)

48%-85%

Raw Material

High Alumina Bauxite

Processing Service

Punching, Cutting, Moulding

Type1

Fire Brick

Feature

Long Time Materials, Firebrick, Instant Materials

Type

Heat-Resistant Material

Shape

Block

Transport Package

According to Customer Requirements

Specification

230 x 114 x 65 mm

Trademark

zhengzhou RS

Origin

China Henan

HS Code

6902200000

Production Capacity

5000ton/Tons Per Year

Key features

High Alumina Content: Al2O3 content ranges from 48% to 85% for superior heat resistance.

Low Apparent Porosity: Apparent porosity is 20.0-22.0%, ensuring high density and durability.

Customizable Shapes: Available in block shapes with options for punching, cutting, and moulding.

OEM/ODM Support: Full customization from samples and designs with OEM and ODM services.

Fast Delivery: Normal delivery within 7 to 14 days, depending on order quantity.

Certified Quality: ISO9001 and CE certified with strict QA/QC inspection processes.

Robust Packaging: Wooden pallets with plastic film to protect goods during transit.

Company profile

Years of Export ExperienceProduct Certification

ZHENGZHOU RONGSHENG REFRACTORY CO., LIMITED

Henan, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs CertifiedExport Year: 14 years CertifiedNearest Port: Qingdao PortAverage Response Time: ≤1.92h

AI-Powered supplier vetting

SummaryThe supplier is a professional refractory-material and kiln-engineering supplier with capabilities covering shaped and unshaped refractory materials, castables, refractory cement, wear-resistant ceramics, graphite electrodes, kiln equipment, and related engineering services. It provides 3D design, sample/design-based customization, ODM, and OEM services, but reported no new products during the past year and has no SDK. Production information indicates two production lines and stated annual capacities including 100,000 tons of refractory bricks, 30,000 tons of refractory castable, 30,000 tons of refractory cement, and 50,000 tons of another refractory castable category. Quality and management certifications include CE, ISO9001:2015, ISO45001:2018, and ISO14001. Service procedures, complaint handling, corrective actions, and finished-product inspection are documented and followed. However, the supplier lacks overseas agents, branches, warehouses, and showrooms, and has no valid manufacturing-capacity...

Supplier typeThe supplier explicitly identifies as a professional technical supplier and operates across refractory materials, castables, ceramics, graphite electrodes, kiln equipment, and kiln-related engineering services. This indicates a specialized industrial supplier rather than a general trading entity.

CertificationsThe supplier reports CE product compliance certification and ISO9001:2015, ISO45001:2018, and ISO14001 management-system certifications. These stated certifications provide explicit evidence of formal quality, occupational safety, and environmental management coverage.

After-Sales capabilityThe supplier has documented and followed procedures for corrective and preventive actions, customer complaints, supplier-service assessment, and quality assurance, and it maintains in-stock service capability. However, it has no overseas warehouse, showroom, agent, or branch, so overseas physical service support is limited.

R&D capabilityThe supplier has three R&D engineers and provides 3D design, ODM, and OEM services, demonstrating design and development capability. However, it reported no new products in the past year and has no available SDK, so evidence of recent product innovation is limited.

Production capacityThe supplier operates two production lines and reports substantial annual capacities, including 100,000 tons of refractory bricks, 30,000 tons of refractory castable, 30,000 tons of refractory cement, and another 50,000-ton refractory castable category. It has defined equipment and finished-product inspection instructions, but lacks a valid contract between the factory and related subcontractor, creating a documented capacity-governance concern.

Customization capabilityThe supplier explicitly offers customization from samples and designs, 3D software design services, and ODM services. These combined capabilities directly support customized product development and manufacturing.