
Specialty Steel Post Tensioning, Inc
About Us
Specialty Steel is a full-service post-tensioning and reinforcing steel company based in Santa Ana, California. Since 1971, we have designed, supplied, and installed post-tension cable and rebar for foundations across Southern California — including single-family, multifamily, and podium projects. Working with our in-house post-tensioning engineer, Beat Arnet of Arnet Engineering, we develop site-specific, code-compliant PT slab designs and value-engineered redesigns that reduce material and cost without sacrificing quality. In-house steel fabrication and extrusion, along with long-standing supplier relationships, give us access to competitively priced, readily available materials. Our goal is simple: lower our clients’ costs, reduce each project’s carbon footprint by eliminating unnecessary over-design, and deliver the best products and service in the industry.
Our Products

Post-Tension Cable
Post-tension cable supplied and installed for slab-on-ground foundations, including ribbed slabs and uniform-thickness slabs, for single-family, multifamily, and podium projects.
Reinforcing Steel (Rebar)
Rebar supply and field installation for residential and multifamily foundations, backed by in-house steel fabrication.
PT Slab Design & Value Engineering
Site-specific post-tension slab designs and value-engineered redesigns of third-party designs, prepared from the project’s soils report and structural plans.
Design/Build & Field Installation
Complete design/build service: plan check coordination, pre-construction meetings with your field team, fully staffed installation crews, and prompt response to field issues.
Our History
Specialty Steel has been supplying and installing post-tension cable and reinforcing steel in Southern California since 1971. Over more than five decades, the company has provided creative, value-added post-tension slab designs and efficient field installations for tens of thousands of homes across California. Its long-standing partnership with Arnet Engineering gives clients full-time access to in-house PT design and structural observation. Today, Specialty Steel continues to serve builders throughout Orange County, Los Angeles, Riverside, San Bernardino, and San Diego from its Santa Ana headquarters.