Custom Refractory Forms & Castables

Malco provides responsive castable refractory solutions and custom refractory forms built to perform in the toughest industrial environments. Whether you need insulation poured into complex geometries or full installation of castables on your fabricated units, we deliver fast, precise service that meets your specs and keeps your project moving.

We specialize in urgent turnaround, niche shapes, and turnkey insulation capabilities, all under one roof in our Oklahoma facility.

What Are Refractory Castables?

Refractory castables are monolithic insulation materials made of high-temperature aggregates, bonding agents, and additives. They’re poured or gunned into place to line furnaces, ducts, stacks, and vessels, protecting steel components from extreme heat, wear, and corrosion.

Malco works with a wide range of castables, including:

• Dense castables for structural strength
• Low cement castables (LCC) for high performance
• Lightweight insulating castables
• Acid-resistant and abrasion-resistant formulas

Whether you’re lining a burner, duct, or heater box, the right castable makes all the difference in heat retention and system life.

Applications for Castables and Forms

We support industrial clients across North America with castable supply, form fabrication, and installation. Our castable refractory services are ideal for:

• Thermal oxidizers and vapor combustors
• Burner boxes and heater skids
• Heat recovery units (HRUs and HRSGs)
• Frac sand dryers
• Emissions control systems
• Custom ducting and refractory chambers

We fabricate and install refractory solutions for EPCs, OEMs, and refractory installers in the power, cement, petrochemical, and renewables sectors.

Why Malco for Castables?

We’re not a catalog company, we’re a responsive partner. Malco handles castable insulation needs with the urgency and precision critical to heavy industry.

Here’s what sets us apart:

• Custom refractory forms built in-house from your design or ours
• Installation-ready systems delivered from our Oklahoma facility
• Rapid turnaround on niche and hard-to-source shapes
• Integrated fabrication + refractory services, one partner from start to finish
• Full support for short-notice orders and critical-path projects

Need a custom refractory shape fast? We’ll fabricate the form, pour the castable, and get it on the truck, sometimes same day.

Our Process: From Form to Finish

At Malco, we don’t just sell insulation, we deliver build-ready solutions.

• In-house fabrication of refractory forms for casting
• Castable selection and mixing based on your heat, load, and chemical exposure
• Precision pouring into vessels, chambers, or standalone shapes
• Optional installation on-site or in-shop for turnkey delivery

With 40 feet under hook and 20 acres of fabrication capacity, we handle everything from small duct sections to 18-foot diameter systems.