What ANH Refractories does

HWI (HarbisonWalker International), historically evolving from the merger of Harbison-Walker and ANH Refractories, is a U.S.-headquartered manufacturer and service provider of refractory products serving heavy industry. Founded in 1864 and now operating as a member of the international Calderys group (since 2022), the company supplies one of the industry's broadest refractory product lines — bricks, castables, mortars, and specialty formulations including AZTECH-S for glass furnace superstructures — engineered to withstand extreme high-temperature, corrosive, and thermal-cycling environments.

HWI's commercial model is a classic industrial B2B motion: enterprise field sales with dedicated customer-service and technical-support teams (Technical Marketing, Sales, and General contact lines listed at the Pittsburgh-area headquarters), supplemented by a U.S. distribution-center network, a certified contractor/installer channel, and a Business Portal and mobile tools app for account management and field reference (e.g., Safety Data Sheets). Pricing is not publicly disclosed and is handled via custom quotes tied to application specification, volume and refractory performance requirements. Recent strategic activity — including the AZTECH-S product launch (May 2026), the FIRE training class (June 2026), and the South Point contractor/installer seminar (June 2026) — points to ongoing investment in specialty product extensions and channel ecosystem development, while an explicit sustainability narrative around energy transition, environmental footprint, and people/community commitments frames the company's positioning for the decarbonization era.

End markets are diversified across industrial verticals: Iron & Steel (primary), Aluminum, Copper & Heavy Non Ferrous, Ferrous Foundry, Glass, Power Generation, Refineries & Petrochemicals, Cement, Lime, Pulp & Paper, Gasifiers, Incineration, Chemicals, Thermal Storage, and Space Exploration. The breadth of served industries, depth of product portfolio, and integration into the Calderys global refractory network constitute the company's principal defensibility, while the 160-year brand heritage and patented formulations provide intangible-asset and switching-cost moats in capital-intensive, performance-critical applications.

Name

ANH Refractories

Legal name

HWI

Website

https://naref.com

Company type

Private

Founded year

1864

Operating status

Operating

Headcount range

11–50 employees

Short description

HWI (HarbisonWalker International, successor to ANH Refractories) is a U.S.-based refractory products manufacturer serving steel, aluminum, glass, cement, power, petrochemical, and other heavy industries, operating as a member of the international Calderys group.

Ownership category

akta.pro rank

Headquarters

HQ city

Pittsburgh

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Operations, Personnel, Technology or R&D, Marketing or Sales, Infrastructure

Revenue model

1. Refractory Products: Sale of refractory materials including bricks, castables, mortars, and specialty products designed for high-temperature industrial applications across steel, aluminum, glass, cement, power generation, and other heavy industries.
2. Refractory Services: Contractor/installer network services and fundamentals training programs for refractory installation and maintenance.

Go-to-market motion1 record

Distribution channels4 records

Marketing channels9 records

Core offering

HWI (HarbisonWalker International), originating from ANH Refractories, manufactures and sells refractory products—including bricks, castables, mortars, and specialty formulations such as the AZTECH-S refractory for glass furnace superstructures—designed for extreme high-temperature industrial environments. The company serves iron and steel, aluminum, copper and non-ferrous metals, foundry, glass, power generation, refineries and petrochemicals, cement, lime, and other heavy industries. In addition to products, HWI provides a contractor/installer network and Fundamentals Training programs for refractory installation and maintenance.

Product overview

HWI (Huntington Woods, Inc. Refractories), a member of Calderys, delivers one of the industry's widest, deepest lines of refractory solutions. The company provides world-class refractory products designed for the toughest environments, harshest elements, and biggest challenges. Their portfolio includes AZTECH-S (a next-generation refractory for glass furnace superstructures) alongside a comprehensive range of refractory products serving industries including Iron & Steel, Aluminum, Copper & Heavy Non Ferrous, Ferrous Foundry, Glass, Power Generation, Refineries & Petrochemicals, Chemicals, Gasifiers, Incineration, Cement, Pulp & Paper, Lime, Space Exploration, and Thermal Storage. The company also offers refractory services including a Contractor/Installer Network, Fundamentals Training, and sustainability solutions.

Differentiator

Problem solved

Functional benefit

Products and services

• AZTECH-S Refractory A next-generation refractory material specifically engineered for glass furnace superstructures, targeting glass manufacturing customers requiring high performance in extreme high-temperature environments.
• Refractory Bricks, Castables, Mortars, and Specialty Products Comprehensive line of refractory products designed for the toughest high-temperature industrial environments across iron and steel, aluminum, glass, cement, power generation, refineries and petrochemicals, and other heavy industries.
• Contractor/Installer Network Services Certified contractor and installer network providing refractory installation services and applications support for industrial customers across the United States.
• Fundamentals Training Training program covering refractory installation and maintenance fundamentals for contractor, installer, and customer personnel.

Segments9 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature1 record

Partnerships

One partnership is on record.

• CalderyscoreStrategic or Co-development PartnerHWI operates as a member of Calderys, an international refractory group. This parent-subsidiary relationship provides HWI with access to global resources, international network capabilities, and shared technology development. HWI's branding explicitly states 'A member of Calderys' across all communications.

Scale indicators2 records

Recent moves6 records

Expansion highlights5 records

Broad incumbents

• Imerys: France-based mineral specialties group whose high-temperature solutions and performance minerals segments directly overlap with refractory raw materials and formulations; competes in adjacent materials rather than pure refractory products.
• Morgan Advanced Materials: UK-based advanced materials group with thermal products division supplying high-temperature ceramics and refractories to industrial applications; overlaps HWI in heat-resistant ceramic solutions but operates across a broader advanced-materials portfolio.
• Saint-Gobain: Diversified French building materials and high-performance materials group with refractory product lines and ceramic raw-material capabilities; overlaps HWI in refractories but competes across a much broader portfolio.

Direct peers

• Vesuvius plc: Global engineered refractories and flow-control products supplier serving steel, foundry and glass industries with a comparable product mix to HWI and similar emphasis on application engineering and customer service.
• Resco Products: US-headquartered manufacturer of refractory products serving steel, aluminum, cement, glass and power generation — same primary geographies and end-markets as HWI, making it a close North American direct competitor.
• RHI Magnesita: World's largest refractory producer offering bricks, mixes and services to steel, cement, glass and non-ferrous metals — directly comparable product portfolio and end-market overlap with HWI, with greater global scale and raw-material vertical integration.

Others

• Calderys: International refractory group and HWI's parent company since 2022; provides global resources, R&D and network that HWI leverages, while housing sibling refractory brands operating in adjacent geographies.

Regional players

• Magnezit Group: Russia-based vertically integrated refractory producer focused on magnesia-based products for steel, cement and non-ferrous metals; comparable product mix but different primary geography versus HWI's North American base.
• Krosaki Harima: Japan-based refractory manufacturer serving domestic steel, cement and glass industries with comparable bricks, monolithics and installation services; comparable technology footprint but different primary geography than HWI.

Emerging players

• Puyang Refractories Group: Major Chinese refractory producer expanding into international markets with cost-competitive bricks and monolithics; comparable product categories to HWI but primarily serving different regional customers and increasingly emerging as a global export competitor.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights6 records

Customer concentration

• Xx.com/calderys
• YouTubeyoutube.com/@thinkHWI
• Facebookfacebook.com/thinkhwi
• LinkedInlinkedin.com/company/anh-refractories

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about ANH Refractories