SIGMA Corporation
SIGMA Corporation is a $500M private manufacturer and global sourcer of water and wastewater infrastructure products, serving 1,800+ municipal utilities, OEMs, contractors, and treatment plant operators across North America via 15 facilities and proprietary traceability and coating technologies.
- Company typePrivate
- Founded1985
- HeadquartersCream Ridge, United States
- Headcount101–250
- GTM typeB2B
- OfferingHardware or Manufacturing
What SIGMA Corporation does
SIGMA Corporation is a New Jersey-based private manufacturer and global sourcer of water and wastewater infrastructure products, founded in 1985 by engineers to serve the waterworks industry. The company supplies ductile iron fittings (2–64 inch), restraints (ONE-LOK and PV-LOK series for ductile iron, PVC, and HDPE), municipal castings, polymer enclosures, accessories, hydrant buries and extensions, fabricator products, and coatings/linings (FBE, P401, SIGMA Z-COAT, TNEMEC, Blackhawk, Corrsafe). Technical differentiation rests on a proprietary heat-coding traceability process that stamps every fitting with manufacturing data for 100% origin traceability, high-precision CNC machining for threaded flanges, and the ISO 8179-2-compliant SIGMA Z-COAT zinc-rich coating. The portfolio is supported by seven registered U.S. patents and customer-facing engineering tools including the Restraint Calculator and Restraint Selection Tool. Revenue is generated primarily through unit-priced hardware sales of both domestically manufactured and globally sourced products, with published price lists (PL2026-1 and successor schedules across fittings, restraints, enclosures, and polywrap) and consistent pricing actions through 2024–2026.
SIGMA operates a direct, sales-led go-to-market through nine regional offices across North America (Northeast, Southeast, Midwest, West, Southwest, Western Canada, Quebec, Eastern Canada, and a dedicated Houston-based Treatment Plant Division) supported by six SIGMA Poly Enclosures factories in the US. The company serves 1,800+ customer locations spanning municipal water utilities, OEM manufacturers, treatment plant operators, and pipe fabricators. Sourcing operations extend to China and India, where a December 2025 restructuring formalized four-territory India operations with new regional leadership, complementing long-standing manufacturing and sourcing relationships. The company is privately held by Chicago-based private equity sponsor Wind Point Partners (~$8B AUM), which is executing a Vision-Talent-Transformation buy-and-build strategy that included the January 2026 acquisition of Masonry Supply, Inc. and its Tricast brand to expand Southeast U.S. fulfillment.
SIGMA Corporation firmographics
Firmographics- Name
- SIGMA Corporation
- Legal name
- SIGMA Corporation
- Website
- https://sigmaco.com
- Company type
- Private
- Founded year
- 1985
- Operating status
- Operating
- Headcount range
- 101–250 employees
- Short description
- SIGMA Corporation is a $500M private manufacturer and global sourcer of water and wastewater infrastructure products, serving 1,800+ municipal utilities, OEMs, contractors, and treatment plant operators across North America via 15 facilities and proprietary traceability and coating technologies.
- Ownership category
- akta.pro rank
SIGMA Corporation industry classification
Industry- Product category
- Water and Wastewater Infrastructure Products
- NAICS
- Industrial Machinery Manufacturing (33324), All Other Industrial Machinery Manufacturing (333248)
- SIC
- Special Industry Machinery, Nec (3559), Coating, Engraving & Allied Services (3470)
- akta.pro primary industry
- Monitoring & Control (Dosing Systems, Remote Monitoring, Sensors) (BPABAJAK)
Keywords
Where SIGMA Corporation is headquartered
LocationHeadquarters
- HQ city
- Cream Ridge
- HQ country
- United States
- HQ region
- North America
Offices5 records
Markets served
SIGMA Corporation business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Supply Chain, Operations, Personnel, Marketing or Sales, Technology or R&D, Infrastructure
Revenue model
- Water Infrastructure Products Sales: SIGMA generates revenue through the sale of water and wastewater infrastructure products including fittings, restraints, municipal castings, polymer enclosures, and accessories. The company operates as both a manufacturer and global/domestic sourcer, offering both import and domestically manufactured products.
- OEM Products and Services: Original equipment manufacturing products and services for OEM manufacturers, including precision castings and custom parts
- SIGMA Poly Enclosures (SPE): SIGMA operates six factories across the US manufacturing polymer enclosures, extensions, and lids for the waterworks industry
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Unit Pricing | Pay-as-you-go | Import Fittings - Price list PL2026-1 effective 010526 |
| Unit Pricing | Pay-as-you-go | Domestic Fittings - Price list PL2026-1 effective 120125 |
| Unit Pricing | Pay-as-you-go | SIGMA Poly Enclosures - Multiple product categories |
Go-to-market motion2 records
Distribution channels3 records
Marketing channels7 records
SIGMA Corporation product offering
Product offeringCore offering
SIGMA Corporation manufactures and supplies a full range of water and wastewater infrastructure products including ductile iron fittings, pipe restraints, municipal castings, polymer enclosures, accessories, hydrant buries/extensions, MJ connectors, and coatings/linings. The company also produces custom OEM precision castings and operates as both a domestic manufacturer and global sourcer from China and India, serving over 1,800 customer locations across North America through nine regional field sales offices.
Product overview
SIGMA Corporation is a $500 million global corporation that supplies a full range of global and domestic water and wastewater infrastructure products. The company's core product portfolio centers on fittings (C153 MJ, C110 MJ, C110 Flange, C110 Push-On, C153 Push-On), restraints (ONE-LOK and PV-LOK series for ductile iron, PVC, and HDPE), municipal castings, SIGMA Poly Enclosures (SPE), accessories, extended range products, fabricator products, hydrant buries and extensions, MJ connectors, and coatings and linings (Z-COAT, FBE, P401, TNEMEC). The portfolio also includes value-added tools like the Restraint Calculator Tool and Restraint Selection Tool. SIGMA operates through divisions including SIGMA Companies International, SIGMA Waterworks Division, and SIGMA OEM Division, serving over 1,800 customer locations across North America and Asia with 15 facilities. The company acquired Masonry Supply, Inc. and its Tricast brand in January 2026 to expand Southeast regional fulfillment capabilities.
Differentiator
Problem solved
Functional benefit
Brands
- SIGMA Poly Enclosures (SPE): Extensive range of enclosures, extensions, and lids with six factories across the US
- SIGMA Companies International
- SIGMA Waterworks Division
- SIGMA OEM Division
- SIGMA Z-COAT
- SIGMA Scholars Fund
Products and services
- Fittings SIGMA offers the widest selection of ductile iron fittings on the market, with sizes from 2 to 64 inch and a broad assortment of coatings and linings. Includes C153 MJ Fittings, C110 MJ Fittings, C110 Flange Fittings, and Push-On Fittings for municipal water distribution projects.
- Restraints SIGMA offers both imported and domestic restraint products in ductile iron and PVC, with sizes ranging from 3 to 64 inch. Includes ONE-LOK and PV-LOK series for ductile iron, PVC, and HDPE pipe restraint applications in water infrastructure projects.
- Municipal Castings SIGMA is a national supplier of full-range Municipal Castings Council (MCC) products including all stand-alone MCC products and custom orders. Products include manhole covers, valve boxes, and related castings for municipal water and wastewater infrastructure.
- SIGMA Poly Enclosures (SPE) SIGMA Poly Enclosures (SPE) offers an extensive range of polymer enclosures, extensions, and lids. SIGMA owns and operates six factories across the US for regional manufacturing and timely delivery across North America. Includes light duty valve boxes, meter boxes, and round meter pit products.
- Accessories SIGMA offers MJ accessories, flange packs, gaskets, bolts, and other waterworks accessories. Products available at competitive pricing with added convenience when ordered with fittings.
- Extended Range Products SIGMA offers a large selection of extended range products including Polywrap, copper tracer wire, marking tape, pipe lube, and many other waterworks accessory items. One-stop-shop offering for all waterworks product needs.
- Fabricator Products SIGMA offers a complete line of products for fabricators including threaded flanges for ductile iron, MJ threaded bells, cast iron filler flanges, anchor flanges, and wall collars. Threaded flanges are manufactured with high-precision CNC machining for fabricator customers.
- Hydrant Buries & Extensions SIGMA's Hydrant Bury and Extension Product line offers a wide range of sizes and configurations for fire hydrant installations.
- Treatment Plant Division Services SIGMA's dedicated Treatment Plant Team offers value-added services including pre-project bid tracking, project bid quotations, and specification assistance. Provides waterworks products including restraints up to 60 for PVC and 64 for ductile iron.
- MJ Connector SIGMA's MJ (Mechanical Joint) Connector provides connection solutions for ductile iron pipe applications.
- Coatings & Linings SIGMA offers various coatings and linings including FBE (Fusion Bonded Epoxy), P401 (Ceramic Epoxy), TNEMEC coatings, Blackhawk Asphalt Coating, SIGMA Z-COAT (zinc-rich paint), and Corrsafe for corrosion protection of ductile iron fittings and infrastructure products.
- SIGMA OEM Custom Castings and Parts SIGMA's OEM Division provides original equipment manufacturing products and services for OEM manufacturers requiring custom water and wastewater infrastructure components, including precision castings and custom parts.
Quantifiable outcome
- 100% traceability through heat coding process
- +2 more outcomes
Companies that use SIGMA Corporation
Customer profileNamed customers4 records
Segments4 records
Ideal customer profiles4 records
SIGMA Corporation technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature4 records
SIGMA Corporation partnerships and signals
Strategic signalPartnerships
One partnership is on record.
- Masonry Supply, Inc. (MSI)coreSIGMA acquired Masonry Supply, Inc. (MSI) and its Tricast-branded product line in January 2026. MSI is a manufacturer and supplier of municipal waterworks castings, polymer enclosures and other waterworks accessory products based in Selma, N.C. The acquisition strengthens SIGMA's product portfolio and enhances fulfillment capabilities across the Southeast U.S.
Scale indicators5 records
Recent moves5 records
Expansion highlights5 records
SIGMA Corporation competitors and assessment
Company assessmentDirect peers
- Tyler Pipe: Manufacturer of cast iron soil pipe and fittings, owned by McWane, competing with SIGMA in cast iron products market and serving similar plumbing and infrastructure customer segments.
- Mueller Water Products: Leading US manufacturer of water infrastructure products including valves, hydrants, and pipe fittings for municipal water and wastewater utilities, directly competing with SIGMA across fittings, restraints, and castings categories.
- Core & Main: Largest US distributor of water, wastewater, storm drainage, and fire protection products serving similar municipal utility customers as SIGMA with overlapping fittings, restraints, and castings product lines.
- U.S. Pipe: Manufacturer of ductile iron pipe and fittings for water and wastewater applications, owned by Forterra, directly competing with SIGMA in pipe fittings and restrained joint products.
- Star Pipe Products: Manufacturer of ductile iron fittings, restraints, and related waterworks products, direct competitor to SIGMA in the core fittings and restraint product lines with similar customer base.
- Ebaa Iron: Specialty manufacturer of pipe restraints and fittings for water and wastewater applications, direct competitor in SIGMA's restraint product line including ductile iron and PVC restraint categories.
- American Cast Iron Pipe Company: Major US manufacturer of cast iron pipe, ductile iron pipe, and fittings for waterworks, competing directly with SIGMA in castings and pipe products serving municipal utilities.
- Kennedy Valve: Manufacturer of waterworks valves, hydrants, and fittings, owned by Mueller Water Products, with overlapping product portfolio competing with SIGMA in the municipal water infrastructure market.
Broad incumbents
- McWane: Major privately-held manufacturer of ductile iron pipe, fittings, valves, and fabricated products for waterworks, with a broader product portfolio and larger scale than SIGMA across multiple water infrastructure categories.
- Forterra: Leading manufacturer of water and drainage infrastructure products including concrete and ductile iron pipe, competing with SIGMA's castings and pipe products in the US municipal water and wastewater market.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat6 records
Key risks7 records
Key highlights7 records
Customer concentration
SIGMA Corporation social profiles
Digital presenceSIGMA Corporation compliance and trust
Trust signalCompliance2 records
SIGMA Corporation financial estimates
Financial estimateRevenue estimate
Valuation estimate
SIGMA Corporation leadership team
Management profileNumber of profiles
Profiles11 records
SIGMA Corporation subsidiaries and ownership
Company hierarchySubsidiaries4 records
SIGMA Corporation funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
SIGMA Corporation M&A and investment
M&A and investmentM&A1 record
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about SIGMA Corporation
What does SIGMA Corporation do?
SIGMA Corporation manufactures and supplies a full range of water and wastewater infrastructure products including ductile iron fittings, pipe restraints, municipal castings, polymer enclosures, accessories, hydrant buries/extensions, MJ connectors, and coatings/linings. The company also produces custom OEM precision castings and operates as both a domestic manufacturer and global sourcer from China and India, serving over 1,800 customer locations across North America through nine regional field sales offices.
Is SIGMA Corporation a public or private company?
SIGMA Corporation is a private company. It is classified as private equity controlled and is currently operating.
When was SIGMA Corporation founded?
SIGMA Corporation was founded in 1985. It employs 101 to 250 people.
Where is SIGMA Corporation based?
SIGMA Corporation is headquartered in Cream Ridge, United States, in the North America region.
How does SIGMA Corporation make money?
Three revenue lines are on record. Water Infrastructure Products Sales are the primary driver. The others are OEM Products and Services and SIGMA Poly Enclosures (SPE).
Who are SIGMA Corporation's main competitors?
Direct peers on record are Tyler Pipe, Mueller Water Products, Core & Main, U.S. Pipe, Star Pipe Products, Ebaa Iron, American Cast Iron Pipe Company and Kennedy Valve. Broad incumbents are McWane and Forterra.
Does SIGMA Corporation have an API?
No public API is recorded for SIGMA Corporation.
What industry is SIGMA Corporation in?
SIGMA Corporation's product category is Water and Wastewater Infrastructure Products. Its primary akta.pro industry code is BPABAJAK, Monitoring & Control (Dosing Systems, Remote Monitoring, Sensors). Its NAICS code is 33324 and its SIC code is 3559.