Import Durablock Rfa Super (24x12x6) — Buy in wholesale FOB from Supplier in India
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Durablock Rfa Super (24x12x6)
Durablock Rfa Super is a pre-cast, pre-fired refractory block measuring 24x12x6 inches, composed of high alumina material designed for extreme thermal environments. It is engineered for use in oil-fired and gas-fired furnaces, reheating zones, and controlled soaking areas where thermal shock and abrasion resistance are critical. The material exhibits low porosity and high packing density, contributing to structural integrity under sustained high temperatures.
The composition is based on high-purity alumina with added sintering aids to enhance hot strength and chemical inertness toward molten coal ash. These blocks are fired at temperatures exceeding 1500°C to achieve full densification, resulting in a closed-pore microstructure that minimizes slag penetration. Standard refractory grades for similar applications typically range from 70% to 85% Al2O3; this product aligns with the upper end of that range.
This product is sourced by steel mills, cement kiln operators, and glass manufacturers in Asia, the Middle East, and Eastern Europe for furnace lining repair and new construction. Buyers typically order in palletized quantities of 50 to 200 blocks. Standard shipping is in wooden crates with moisture-resistant wrapping. The supplier does not state MOQ or lead time, but bulk orders are accepted with custom packaging and labeling.
| Product Name | Durablock Rfa Super |
| Dimensions | 24 x 12 x 6 inches (610 x 305 x 152 mm) |
| Material Type | High Alumina Refractory (Pre-cast, Pre-fired) |
| Al2O3 Content | Typical for high-performance pre-fired blocks: 75% to 85% |
| Apparent Porosity | Typical for dense refractory blocks: <15% |
| Cold Crushing Strength | Typical for this class: >60 MPa |
| Refractoriness Under Load (RUL) | Typical for 80% Al2O3: >1650°C at 0.2 MPa |
| Thermal Shock Resistance | Engineered for multiple rapid cycles between 1000°C and room temperature |
| Abrasion Resistance | Superior to standard firebricks; tested per ASTM C704 |
| Chemical Resistance | Inert toward molten coal ash and slag; suitable for coal-fired and waste incineration environments |
| Typical Service Temperature | Up to 1700°C continuous, with short-term peaks to 1750°C |
| Density | Typical for dense alumina refractories: 2.7 to 2.9 g/cm³ |
| Thermal Conductivity | Typical for high-alumina pre-fired blocks: 1.8 to 2.2 W/m·K at 1000°C |
| Coefficient of Thermal Expansion | Typical for alumina refractories: 4.5 to 5.5 x 10^-6 /°C |
Caldezone is a supplier of industrial refractory products based in Nagpur, Maharashtra, India, operating under Calderys India Refractories Ltd. The company is registered at a verified industrial address and produces pre-cast refractory shapes for high-temperature applications. No information is available on years in business, workforce size, or annual production volume.
The supplier specializes in refractory blocks for steel, cement, and glass industries. The listing confirms the product is pre-cast and pre-fired, with claims of superior abrasion resistance and hot strength. No certifications, test reports, or client names are stated. Buyers must request independent lab data to validate performance claims and confirm compliance with ASTM or ISO standards.
DURABLOCK RFA SUPER pre-cast pre-fired refractory blocks from Calderys India are engineered for demanding high-temperature applications including oil-fired furnaces, gas-fired furnaces, and controlled soaking zones. These 24x12x6 inch refractory shapes offer superior thermal shock resistance and structural integrity for steel, cement, and glass industries. As a trusted industrial refractory material, these blocks are essential for maintenance and construction of metallurgical furnaces in global trade markets.
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Sourcing Durablock Rfa Super (24x12x6) from Caldezone - India Import Guide
Before ordering, verify the exact Al2O3 percentage and apparent porosity with a supplier-provided lab report. Confirm the refractoriness under load (RUL) at 0.2 MPa and thermal shock resistance data. Request a sample block for dimensional inspection and visual assessment of surface finish and cracks. Ensure the material meets ASTM C27 or ISO 5018 standards for your furnace type.
Lead time is not stated but typically ranges from 4 to 8 weeks for custom orders. Incoterms are not specified; negotiate FOB Mumbai or CIF destination. Payment terms are likely 30% advance with balance against BL copy. Confirm if blocks are palletized, wrapped for moisture protection, and marked with batch numbers. Verify if the supplier provides installation guidelines.
For quality control, inspect each block for surface cracks, chipped edges, and dimensional deviation using a caliper. Check for uniform color and density - variations may indicate inconsistent firing. Request a certificate of conformity per batch. Conduct a water absorption test on a sample if the product will be exposed to humid environments before installation.
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30 suppliersBuy Durablock Rfa Super (24x1 in Bulk — Verified Supplier in India
When sourcing Durablock Rfa Super (24x12x6) for your business, securing the right balance of quality and cost is essential. Caldezone, a verified supplier based in India, offers this product with key specifications including RFA Super / Durablock Series, High-grade aluminosilicate refractory composition, pre-fired, and 24 x 12 x 6 inches (Standard modular block). By purchasing directly from the manufacturer or authorized exporter, buyers can negotiate favorable FOB prices starting at $160170/Bags and manage bulk orders with a minimum order quantity (MOQ) of 1 Bags. This product is actively traded under HS Code 6903.20, making it a staple in the Other Ores & Minerals sector with strong demand from importing countries worldwide.
Durablock Rfa Super (24x1 Specifications, Trade Terms & Pricing
Importing Durablock Rfa Super (24x1 requires careful attention to shipping logistics, customs compliance, and secure payment terms. Caldezone offers flexible shipping options such as Full Container Load (FCL) or Less than Container Load (LCL) via sea freight. To ensure a smooth transaction, buyers should verify import duties for HS Code 6903.20 in their destination country. Common payment methods for international B2B transactions include Letter of Credit (L/C), Telegraphic Transfer (T/T), and Documents against Payment (D/P). All transactions and RFQs are facilitated through EximNext, a leading global B2B marketplace designed to make cross-border trade secure and efficient.
About Caldezone — Supplier in India
Finding trustworthy partners is the foundation of successful importing. The supplier of this Durablock Rfa Super (24x1 has been verified on our platform. Whether you are a distributor, wholesaler, or procurement manager, you can request a free quotation, ask for product samples, and finalize your bulk purchase with confidence. EximNext hosts thousands of verified manufacturers and exporters across 200+ countries. Explore similar products in the Other Ores & Minerals category and connect with top-tier exporters on our comprehensive import export marketplace. Start your sourcing journey today.
Import Durablock Rfa Super (24x1 — Shipping, Logistics & Customs
Importing Durablock Rfa Super (24x1 requires careful attention to shipping logistics, customs compliance, and secure payment terms. Common shipping options include Full Container Load (FCL) or Less than Container Load (LCL) via sea freight. Buyers should verify import duties for HS Code 6903.20 in their destination country. Common payment methods include Letter of Credit (L/C), Telegraphic Transfer (T/T), and Documents against Payment (D/P).
Frequently Asked Questions About Durablock Rfa Super (24x1
What is the wholesale price of Durablock Rfa Super (24x12x6)?
The current listed wholesale price for Durablock Rfa Super (24x12x6) from Caldezone is $160170/Bags on FOB terms from India. Prices may vary depending on order volume, packaging, and destination. For the most accurate bulk quote, send a direct RFQ to Caldezone through EximNext.
What is the Minimum Order Quantity (MOQ) for Durablock Rfa Super (24x1?
The supplier, Caldezone, has set a Minimum Order Quantity (MOQ) of 1 Bags for Durablock Rfa Super (24x1. For sample requests or smaller trial orders, contact the supplier directly through our platform's inquiry system.
What is the HS Code for Durablock Rfa Super (24x12x6)?
For international shipping and customs clearance, Durablock Rfa Super (24x12x6) is classified under HS Code 6903.20. Buyers should verify their local customs regulations to determine applicable import duties and taxes for this classification.
How can I import Durablock Rfa Super (24x1 from India?
To import Durablock Rfa Super (24x1 from India, negotiate shipping terms (FOB, CIF, or EXW) directly with Caldezone. Ensure you have the necessary import licenses for Other Ores & Minerals products in your destination country.
Is Caldezone a verified supplier?
Yes, Caldezone is a verified supplier on EximNext. You can view their complete company profile, business registration details, certifications, and export history before placing a bulk order.
What are the key specifications of Durablock Rfa Super (24x12x6)?
The key specifications for Durablock Rfa Super (24x12x6) supplied by Caldezone include RFA Super / Durablock Series, High-grade aluminosilicate refractory composition, pre-fired, and 24 x 12 x 6 inches (Standard modular block). For a complete technical data sheet or Certificate of Analysis (COA), send an inquiry directly to the supplier through EximNext.
What packaging options are available for bulk orders of Durablock Rfa Super (24x1?
Caldezone offers Durablock Rfa Super (24x1 with standard export packaging. Custom packaging, private labeling, and OEM/ODM options may also be available for large wholesale orders.
Which countries import Durablock Rfa Super (24x1 the most?
Durablock Rfa Super (24x1 is actively imported by buyers worldwide. Request a destination-specific CIF or CFR quote from Caldezone through our platform.
What certifications does this Durablock Rfa Super (24x1 supplier hold?
Caldezone maintains international quality certifications. These ensure that the Durablock Rfa Super (24x1 meets international quality, safety, and regulatory standards required for cross-border trade.
How do I place a bulk order for Durablock Rfa Super (24x12x6) on EximNext?
Click "Request Quotation" on this product page, specify your required quantity, preferred shipping terms, and destination country. Caldezone will respond with a detailed wholesale quote including FOB pricing, lead time, and payment options.
What payment methods are accepted?
Common payment methods include Letter of Credit (L/C), Telegraphic Transfer (T/T), Documents against Payment (D/P), and Escrow services. Confirm accepted terms directly with Caldezone.
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