PT 40 High Strength Fence Framework
Count on US Premier Tube Mills for high-strength steel tubing engineered to outperform Schedule 40 in strength and weight. PT 40 is the reliable choice for fence framework in commercial, industrial, and high-security applications. Built in the USA with advanced corrosion protection and 50,000 PSI steel, PT 40 is strong, efficient, and built to last.
Product Overview
PT 40 fence framework from US Premier Tube Mills is engineered for superior strength, durability, and corrosion resistance. Made in the USA using 50,000 PSI high-yield hot-rolled steel, PT 40 is 37% stronger and 21% lighter than Schedule 40 tubing, making it ideal for demanding fencing applications. Our advanced manufacturing process applies full interior zinc coating before forming, along with a triple-layer exterior system: steel-adhered zinc, a conversion coating, and a vacuum-sealed clear top coat for maximum corrosion protection.
PT 40
High Strength Pipe for Commercial, Industrial and High-Security
vs. Schedule 40
Posts | Outside Dimensions (in.) |
Pipe Wall Thickness (in.) |
Weight (lbs./ft) |
Section Modulus (inches³) |
Yield Strength (psi) |
Bending Moment (lbs. in.) |
Bending Strength (lbs.) 6' Cantilever Load |
Bundle Counts (pcs.) |
|
---|---|---|---|---|---|---|---|---|---|
1-⅞" O.D. | PT 40 | 1.900 | .120 | 2.28 | 0.2810 | 50,000 | 14,050 | 195 | 61 |
Sch 40 | 1.900 | .145 | 2.72 | 0.3262 | 30,000 | 9,786 | 136 | ||
2-⅜" O.D. | PT 40 | 2.375 | .130 | 3.12 | 0.4881 | 50,000 | 24,405 | 339 | 37 |
Sch 40 | 2.375 | .154 | 3.65 | 0.5606 | 30,000 | 16,818 | 234 | ||
2-⅞" O.D | PT 40 | 2.875 | .160 | 4.64 | 0.8778 | 50,000 | 43,890 | 610 | 19 |
Sch 40 | 2.875 | .203 | 5.79 | 1.0640 | 30,000 | 31,920 | 443 | ||
3-½" O.D. | PT 40 | 3.500 | .160 | 5.71 | 1.3408 | 50,000 | 67,040 | 931 | 19 |
Sch 40 | 3.500 | .216 | 7.58 | 1.7241 | 30,000 | 51,723 | 718 | ||
4" O.D. | PT 40 | 4.000 | .160 | 6.56 | 1.7819 | 50,000 | 89,095 | 1237 | 19 |
Sch 40 | 4.000 | .226 | 9.11 | 2.3940 | 30,000 | 71,820 | 998 | ||
Top Rail - 10' Supported | |||||||||
1-⅝" O.D. | PT 40 | 1.660 | .111 | 1.84 | 0.1961 | 50,000 | 9,805 | 327 | 61 |
Sch 40 | 1.660 | .140 | 2.27 | 0.2350 | 30,000 | 7,050 | 235 |
For additional sizes and availability, please contact our team!
Our Manufacturing Process
All of our pipe products are manufactured using a state-of-the-art process that ensures each length is precision-formed for strength, consistency, and long-term reliability. With our signature triple-layer corrosion protection, consisting of a zinc-coating inside and out with a clear topcoat. They’re built to resist rust, corrosion, and environmental wear, making them ideal for outdoor and high-traffic applications.


Sustainable By Design
By using partially recycled, 100% domestically sourced steel, our products can contribute valuable credits toward your LEED-certified projects. It’s a responsible choice that aligns with modern standards without compromising strength or performance.
Technical Specifications & Compliance










Superior Corrosion Resistance
Our triple-layer inline coating process guarantees the highest degree of corrosion resistance available. This includes an initial hot dip steel, an intermediate conversion coat, and a clear topcoat.
Proudly Made in the USa
All US Premier products are proudly manufactured in the USA using 100% domestic steel, fully meeting Buy America(n) compliance standards.


Backed With Confidence
At US Premier Tube Mills, quality is our promise. Our galvanized tube and pipe products are backed by a 3-year limited warranty, and our Color Coat line carries a 15-year limited warranty against fading, flaking, cracking, or crazing. This ensures long-term durability under proper use. We stand by our craftsmanship so you can build with confidence.


Color Coated Tubing Built to last
All US Premier Tube products are available in black, green, or brown, finished with our durable 15-year Color Coat system. It is engineered not to fade, crack, flake, or craze. Custom colors are also available upon request.