Since 1945
About Lone Star
Heat Treating
Four generations of family ownership. Over 80 years of precision heat treating. One unwavering commitment to quality and craft.
Family Heritage
Built on Four Generations of Craft
Lone Star Heat Treating was founded in 1945, at a time when Houston's industrial sector was beginning its transformation into the energy capital of the world. What started as a small commercial heat treating shop has grown into one of the most capable and accredited heat treatment facilities in the country — offering normalizing, annealing, tempering, quenching, stress relieving, carburizing, and induction hardening under one roof.
For over 80 years, four generations of the same family have guided this company — investing in people, equipment, and quality systems that set us apart. We were the first commercial heat treater in the United States to achieve ISO accreditation in 1993, and we've continued to raise the bar ever since.
Today, we operate six distinct thermal processing lines out of our Houston facility, serving aerospace, defense, energy, and general industrial customers with the same dedication to craft that defined us from day one.
Key Milestones
Eight Decades of Progress
Founded in Houston
Lone Star Heat Treating opens its doors, establishing one of the first dedicated commercial heat treating operations in the Houston industrial corridor.
First ISO Accreditation in the USA
Becomes the first commercial heat treater in the United States to achieve ISO accreditation — setting the standard for the entire industry.
Bickley Furnace Installed
Invests in a Bickley gas-fired barrel furnace, introducing continuous in-line heat treating capability for bar and tube products.
AS 9100 & ISO 17025
Achieves AS 9100 (aerospace quality management) and ISO/IEC 17025:2017 (laboratory testing) accreditations, opening doors to aerospace and defense work.
58ft Furnace Line at Liberty Plant
Expanded operations with a 58-foot furnace line at the Liberty plant, adding massive capacity for large-scale heat treating.
Expert Guidance
Two On-Site Metallurgists
Not every heat treater has metallurgists on staff. We have two. Our metallurgists are available to consult with you on specifications, material selection, and process design — before the first part enters a furnace.
Whether you need help interpreting a specification, selecting the right thermal process for a new alloy, or troubleshooting an existing application, our metallurgists provide the technical depth that gives customers confidence.
Technical Consultation
Specification review, material selection guidance, and process recommendations
Quality Assurance
Metallurgical analysis, failure investigation, and compliance verification
Our Facility
Located in Houston
Our centrally located Houston facility houses all six processing lines, a full metallurgical laboratory, and dedicated quality control stations under one roof — serving the Texas Gulf Coast and customers nationwide.
Real-Time Work Order Tracking
Every job is tracked from receipt through delivery. Customers can get real-time status updates on their orders.
Electronic Data Retrieval
Complete inspection and processing records are stored electronically, enabling instant retrieval for audits and customer requests.
Sample Plan Inspection
Every order is inspected per sample plan. Our quality control program includes hardness testing, dimensional verification, and metallurgical analysis.
Metallurgical Laboratory
Full on-site lab offering hardness testing, tensile testing, charpy impact testing, and microhardness evaluation, with access to third party testing.
Open Inspection Invitation
"You are welcome to inspect our facility and our quality control program at any time."
We stand behind our processes — come see for yourself.
See It In Action
Inside Lone Star
Get a first-hand look at our heat treating operations — from massive batch furnaces to precision induction hardening and everything in between.
Visit Us
Find Our Facility
3939 Blaffer Street
Houston, TX 77026
Walk-Ins Welcome
During regular business hours