For much of the twentieth century, the Lehigh Valley was defined by steel. Bethlehem Steel, just a few miles from downtown Allentown, produced the steel for iconic structures including the Golden Gate Bridge and many of New York's skyscrapers. Although the giant mill closed decades ago, its legacy of metalworking skill remains deeply rooted in the region.
Today, metalworks companies in and around Allentown specialize in forging, precision fabrication, specialty alloys, pipe joining systems, and metal service center distribution. This guide highlights ten metalworks companies serving Lehigh Valley businesses.
The Steel Legacy of the Lehigh Valley
Bethlehem Steel trained generations of welders, machinists, metallurgists, and engineers. When the company closed, many of those skilled workers founded or joined smaller fabrication and machining companies. The former steel site has been transformed into a cultural and entertainment destination, but the metalworking culture endures throughout the region's manufacturing base.
Trends in Metalworking
Fiber laser cutting, robotic welding, and CNC automation have dramatically improved precision and productivity. Specialty alloys for aerospace, medical, and energy applications are in high demand. Reshoring has also brought new opportunities for domestic fabricators as manufacturers seek reliable, nearby suppliers.
Benefits of Working with Experienced Metalworkers
Experienced metalworks companies offer engineering support, certified welding procedures, material traceability, and quality inspections that ensure parts meet exact specifications. Their expertise reduces rework, improves safety, and helps customers bring products to market faster.
Our Picks: The 10 Best Metalworks Companies in Allentown
1. Carpenter Technology
Headquartered in Reading, Carpenter Technology is a global leader in specialty alloys including titanium, nickel, and stainless steel. Its materials are used in aerospace engines, medical implants, and energy equipment where performance is critical.
2. Victaulic
Victaulic, based in Easton, invented the grooved mechanical pipe joining system and has become a global leader in piping solutions. Its products are used in commercial buildings, fire protection, mining, and industrial facilities worldwide.
3. Lehigh Heavy Forge
Operating on part of the former Bethlehem Steel complex, Lehigh Heavy Forge produces large open-die forgings for defense, energy, and industrial applications. It is one of the few facilities in North America capable of forging components of its size.
4. Penn Stainless Products
Located in Quakertown, Penn Stainless Products is a stainless steel and specialty metals service center offering plate, sheet, bar, and processing services such as cutting and machining. Its fast turnaround makes it a valued regional supplier.
5. ATI
ATI produces specialty materials and components including titanium and nickel-based alloys for aerospace and defense. Its Pennsylvania roots and advanced manufacturing capabilities make it a significant player in the state's metals industry.
6. Cleveland-Cliffs
Cleveland-Cliffs operates steelmaking facilities in Pennsylvania, including plate production. It supplies steel for infrastructure, automotive, and industrial customers throughout the region.
7. Nucor
Nucor is the largest steel producer in the United States and operates fabrication and steel products businesses that serve the Northeast. Its recycled-content steel supports sustainable construction.
8. Ryerson
Ryerson is a leading metals service center offering carbon, stainless, and aluminum products with value-added processing. Lehigh Valley fabricators rely on its inventory and cutting services.
9. Olympic Steel
Olympic Steel provides flat-rolled steel, aluminum, and stainless products along with laser cutting and fabrication services, helping manufacturers reduce in-house processing needs.
10. Kloeckner Metals
Kloeckner Metals distributes steel and aluminum products and offers digital ordering tools that streamline procurement. Its processing services support construction and manufacturing customers.
How to Choose a Metalworks Partner
Evaluate potential partners based on their equipment, certifications such as AWS welding or ISO quality standards, material traceability, and capacity. Ask about engineering support, prototyping, and inspection processes. Consider location and delivery capabilities, especially for large or heavy components, and request references from customers with similar projects.
Frequently Asked Questions
Is steel still produced in the Lehigh Valley?
While Bethlehem Steel's main mill closed, forging, fabrication, and specialty metals companies continue to operate throughout the region, including on parts of the former steel site.
What is the difference between a fabricator and a service center?
A fabricator builds finished parts or structures, while a service center stocks and processes raw metal such as sheet, plate, and bar for manufacturers and fabricators.
What industries rely most on Lehigh Valley metalworks companies?
Construction, energy, defense, aerospace, food processing, and industrial equipment manufacturers are among the largest customers, along with the region's many warehouse and logistics developers who need structural steel and custom racking.
How can I reduce the cost of custom metal parts?
Simplifying designs, choosing readily available material grades and thicknesses, loosening non-critical tolerances, and ordering in economical batch sizes all help fabricators produce parts more efficiently and affordably.
Final Thoughts
The spirit of the Lehigh Valley's steel era lives on in its metalworks companies. The firms above combine heritage, skill, and modern technology, making them trusted partners for Allentown manufacturers, contractors, and builders who demand precision, durability, and dependable delivery on every project.