What NEI does

Neenah Enterprises, Inc. (operating as Neenah Foundry, and now commercializing under Charlotte Pipe and Foundry's Infrastructure Division) is a US-based manufacturer of cast iron and metal infrastructure products founded in 1872 and headquartered in Neenah, Wisconsin. The company produces manhole frames and covers, inlet and trench grates, airport and bridge drainage products, tree grates, ADA-compliant detectable warning plates, downspout boots, and access hatches. Its product engineering emphasizes safety and security, evidenced by proprietary offerings such as the Controlled Pressure Release Manhole Cover, the InfraLOCK high-security locking manhole system, and the combined InfraLOCK Release variant. BABA-compliant castings are positioned for use in data center and federally funded infrastructure projects.

The company generates revenue through one-time hardware sales of castings to municipalities, public works authorities, utility companies, and the contractors that install infrastructure systems. Pricing is quote-based and handled through Inside Sales Representatives and field Sales Representatives covering all US states plus Canada, Puerto Rico, the Caribbean, and parts of South America, supported by multi-state foundry and distribution operations. Marketing combines product content, case studies, white papers, and tools on the company website with trade show participation (PWX Expo, WEFTEC, Data Center World Power) and a Lunch & Learn educational program for prospects.

The business is a wholly owned subsidiary of Charlotte Pipe and Foundry and has executed two significant structural moves since 2023: a CEO change in May 2023 (Vik Bhatia) and the joint acquisition of Bingham & Taylor, an underground access solutions manufacturer for water and gas utilities, in November 2025. In March 2026, Neenah Foundry operations were aligned under Charlotte Pipe's Infrastructure Division to unify cast iron plumbing and infrastructure casting capabilities under a single commercial structure.

Name

NEI

Legal name

Neenah Enterprises, Inc.

Website

https://groupnei.com

Company type

Private

Founded year

1872

Operating status

Operating

Headcount range

1,001–5,000 employees

Short description

Neenah Enterprises, Inc. (Neenah Foundry) is a US manufacturer of cast iron infrastructure products — manhole covers, grates, drainage, and airport/bridge castings — serving municipalities, utilities, and contractors, now operating under Charlotte Pipe and Foundry's Infrastructure Division.

Ownership category

akta.pro rank

Product category

Infrastructure Castings

NAICS

Iron Foundries (331511), Steel Foundries (except Investment) (331513)

SIC

Iron & Steel Foundries (3320)

akta.pro primary industry

Steel Casting (Continuous Casting, Ingots, Semi-Finished Slabs/Billets/Blooms) (IMAKABAD)

Keywords

• Cast iron infrastructure
• Manhole frames covers
• Stormwater drainage castings
• Municipal infrastructure products
• Bridge drainage solutions

Headquarters

HQ city

Neenah

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, Infrastructure, Marketing or Sales

Revenue model

1. Infrastructure Castings Sales: Neenah Foundry generates revenue through the sale of cast iron and metal infrastructure products including manhole frames, covers, grates, and related access solutions. Products are sold as one-time capital equipment purchases to utilities, municipalities, and contractors.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels4 records

Core offering

NEI (operating as Neenah Foundry) manufactures and sells cast iron infrastructure castings including manhole frames and covers, inlet and trench grates, airport and bridge drainage products, tree grates, detectable warning plates, downspout boots, and access hatches. Products are sold to municipalities, contractors, and utilities for water, sewer, drainage, and transportation infrastructure applications.

Product overview

Neenah Foundry is a manufacturer of industrial infrastructure castings, now operating as part of Charlotte Pipe and Foundry's Infrastructure Division. The company produces a unified portfolio of iron and metal castings for municipal and commercial infrastructure applications, including access solutions (manhole frames, covers, and hatches), drainage products (inlet grates, trench frames, bridge drainage), and specialized safety/accessibility products. The product line includes security-focused offerings (InfraLOCK locking manhole systems, pressure-release covers) and ADA-compliant detectable warning products. The portfolio integrates the acquired Bingham & Taylor brand for water and gas utility access solutions.

Differentiator

Problem solved

Functional benefit

Brands

• InfraLOCK: High security locking manhole system that protects the nation's underground infrastructure, including pick-proof and weather-resistant locks.

Products and services

• Manhole Frames & Covers Cast iron manhole frames and covers for municipal infrastructure, providing access to underground utilities and wastewater systems.
• Controlled Pressure Release Manhole Cover Explosion-resistant manhole cover that can raise up to 4 inches to release pressure during explosion events without leaving the frame, preventing injury and damage.
• InfraLOCK Manhole Cover High-security locking manhole system designed to protect underground infrastructure from unauthorized access.
• InfraLOCK Release Manhole Cover High-security locking manhole cover that safely releases pressure from explosion events while providing pick-proof and weather-resistant locking mechanisms.
• Inlet Frames & Grates Stormwater drainage inlet frames and grates for capturing surface water runoff in municipal and commercial applications.
• Trench Frames & Grates Trench drainage frames and grates designed for linear water collection in commercial, industrial, and municipal settings.
• Airport Products Specialized infrastructure castings for airport applications, including drainage and access solutions meeting aviation industry standards.
• Bridge Drainage Drainage products specifically designed for bridge applications to manage water runoff and protect structural integrity.
• Tree Grates Ornamental and functional tree grates for urban streetscapes that protect trees while allowing water infiltration.
• Detectable Warning Products ADA-compliant detectable warning plates and surfaces for pedestrian accessibility at transit crossings and intersections.
• Downspout Boots Architectural downspout boots for directing rooftop drainage away from building foundations.
• Access & Hatch Covers Heavy-duty access hatches and covers for underground utility access in various commercial and municipal applications.

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

Two partnerships are on record, tiered core.

• Charlotte Pipe and FoundrycoreStrategic or Co-development Partner · 12 March 2026Neenah Foundry products are now available under Charlotte Pipe and Foundry's Infrastructure Division. Charlotte Pipe and Foundry, with over a century of experience in manufacturing cast iron products, provides an unmatched commitment to integrity and industry leadership. This alignment creates a unified structure for leading infrastructure solutions.
• Bingham & TaylorcoreStrategic or Co-development Partner · 6 November 2025Charlotte Pipe and Foundry and Neenah Foundry acquired Bingham & Taylor, a leading manufacturer of underground infrastructure access solutions serving water and gas utilities. This acquisition expands the combined company's capabilities in providing comprehensive infrastructure access solutions.

Scale indicators1 record

Recent moves7 records

Expansion highlights5 records

Direct peers

• East Jordan Iron Works: East Jordan Iron Works (EJ) is one of the largest US manufacturers of iron castings for infrastructure, producing manhole frames and covers, drainage products, and utility access solutions — directly competing with NEI in municipal specification bidding and serving the same contractor/municipal buyer base.
• McWane Inc. McWane is a privately held iron foundry conglomerate (parent of Tyler Pipe, Clow Water, Kennedy Valve, Anaco/Husky) producing ductile iron pipe, fittings, valves, and infrastructure castings — competing head-to-head with NEI in municipal water/sewer and utility access product categories.
• U.S. Foundry & Manufacturing Corporation: U.S. Foundry manufactures gray and ductile iron castings for utility, municipal, and industrial infrastructure markets including manhole covers and drainage products — a direct specialty competitor with overlapping product lines and customer base to NEI.
• Sigma Corporation: Sigma Corporation is a manufacturer of underground utility access products including meter boxes, valve boxes, and access enclosures for water and gas utilities — a direct peer competing with NEI's Bingham & Taylor portfolio in underground utility access solutions.

Broad incumbents

• Advanced Drainage Systems: Advanced Drainage Systems (ADS) is a large publicly traded manufacturer of water management solutions primarily in corrugated HDPE and polypropylene pipe and drainage products — a broader alternative-materials incumbent encroaching on traditional cast iron drainage and storm management applications served by NEI.
• Charlotte Pipe and Foundry: Charlotte Pipe and Foundry is NEI's parent company and the largest US manufacturer of cast iron plumbing pipe and fittings — operates adjacent rather than directly competitive product lines (plumbing vs. infrastructure access) but now shares a unified Infrastructure Division with NEI per the 2026 commercial alignment.
• AMERICAN Cast Iron Pipe Company: AMERICAN (ACIPCO) is a large diversified iron manufacturer producing ductile iron pipe, fittings, valves, and hydrants for waterworks and infrastructure — broader product scope than NEI but overlapping in municipal infrastructure access and water utility product lines.

Emerging players

• OPW (a Dover company): OPW, a Dover operating company, manufactures underground access solutions for fuel and utility infrastructure including manholes, sumps, and containment products — competes with NEI in underground utility access and complements the Bingham & Taylor utility access portfolio.

Market position

Strengths5 records

Weaknesses4 records

Competitive moat5 records

Key risks5 records

Key highlights7 records

Customer concentration

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Subsidiaries1 record

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 NEI