Seneca Foundry is a family owned, quality driven iron foundry located in Webster City, Iowa. For nearly a century, we have poured gray iron castings and ductile iron castings for customers across North America and beyond.
We combine strong Midwestern values with modern technology to deliver cast iron components to specification and on time. Our story reflects steady growth, responsible leadership, and a commitment to craftsmanship that stands the test of time.
How Did Seneca Foundry Begin?
Roots in Agriculture
Seneca Foundry traces its roots to W.A. McCollough and Sons, founded in 1909. In 1936, the company built a cast iron foundry to supply parts for its livestock waterers. This decision laid the foundation for a business dedicated to precision iron castings.
Family Ownership
In 1955, the grandsons of W.A. McCollough divided the company. Robert McCollough assumed ownership of the iron foundry, establishing a focused path for growth. As the foundry expanded its customer base to include agricultural, industrial, and municipal markets, it earned a reputation for rugged, machinable castings and responsive service. In 1961, the business was officially renamed Seneca Foundry.
A New Chapter of Ownership
In 2024, Seneca Foundry entered a new chapter. Ownership transitioned to the Mason family, marking the first leadership change outside the founding family in nearly 90 years. Today, Seneca Foundry is proudly women owned and continues its legacy of quality while embracing innovation, growth, and community engagement.
How Have We Expanded Our Capabilities?
Relocation and Electric Furnaces
During the 1970s, Seneca Foundry relocated to its current Webster City facility and installed an electric induction furnace. This investment strengthened chemistry control, improved melt cleanliness, and increased overall production capacity for gray and ductile iron castings.
Capacity Boost
In the 1980s, the addition of a second furnace, expanded floor space, and two more molding lines significantly increased throughput. These improvements supported both short run and long run production while enhancing operational flexibility.
Automation Milestones
Also in the 1980s, automated molding machines and high speed sand mixers were implemented to improve dimensional consistency, reduce cycle times, and elevate surface finish quality. These advancements reinforced Seneca Foundry’s reputation for dependable, machinable castings.
Building Expansion
In 2000, the facility expanded to 35,000 square feet, creating additional space to streamline workflow, improve material handling, and support long term growth.
Automation Advances
In 2019, automated grinding equipment was introduced to improve finishing efficiency and consistency. In 2022, automated mold handling equipment for 20 x 24 molds enhanced ergonomics, repeatability, and production throughput.
Continuous Improvement
Since the 1990s and continuing today, lean manufacturing practices, predictive maintenance programs, and data driven process controls have helped reduce waste, control costs, and maintain reliable on time delivery for customers across diverse industries.
What Casting Processes Power Our Foundry Today?
Green Sand Molding
Our green sand molding line produces gray and ductile iron castings ranging from a few ounces up to 100 pounds. This process delivers consistent dimensional accuracy and dependable repeatability across production runs.
3D Scanning and Reverse Engineering
Advanced 3D scanning technology captures precise part geometry to support prototype development, legacy component replication, and detailed technical documentation. This capability helps accelerate project timelines and improve design accuracy.
In House Metallurgical Testing
On site metallurgical analysis, including spectrographic testing, verifies that each heat and casting meets required chemical and mechanical specifications. This rigorous quality control process ensures compliance with both industry standards and customer requirements.
How Do We Ensure Quality and Efficiency?
Total Quality Management
Structured quality systems and real time production monitoring guide every stage of the casting process. Consistent inspection and process control help ensure uniform results across each production run.
Lean Manufacturing Culture
Lean principles are integrated into daily operations to reduce waste, improve workflow, and shorten lead times. This disciplined approach increases efficiency while delivering measurable value to our customers.
Employee Driven Excellence
Cross trained teams work in a safety focused environment that encourages accountability, skill development, and continuous improvement. Employee engagement strengthens operational performance and supports long term customer satisfaction.
Why Partner with Seneca Foundry?
Design for Manufacturability Support
Our engineering team collaborates with customers to refine casting designs, reduce unnecessary weight, improve metal flow, and limit secondary machining. This proactive approach helps control production costs while improving overall part performance and efficiency.
Midwestern Values and Service
Integrity, accountability, and clear communication guide every customer relationship. We are committed to delivering consistent quality products backed by responsive and dependable service.
Flexible Production Scheduling
Our operations support prototype development and low volume runs while maintaining the capacity for higher volume production. This flexibility allows customers to move projects forward efficiently at every stage.
Comprehensive Value Added Services
We offer a range of secondary services, including grinding, machining, heat treatment, painting, and plating. These capabilities simplify sourcing and create a more streamlined production process.
Reliable On Time Delivery
Strong production planning and real time coordination help ensure castings are delivered as scheduled. Transparent communication keeps customers informed and confident throughout the project lifecycle.
Explore Our Growth Over 100 Years
Discover more in A Century of Growth: The Seneca Story and see how our heritage and technology can support your next project.
Ready to discuss your casting challenge? Contact Seneca Foundry today to schedule a free initial consultation and experience the strength of Iowa cast iron expertise.
