Tubes and Pipes

A847 Weathering Steel Tube & Pipe

ASTM A847 - Cold-Formed Weathering Steel Hollow Structural Sections

A847 tube and pipe brings the proven performance of weathering steel to hollow structural applications. Engineered as cold-formed, welded HSS, this material creates its own protective barrier through natural oxidation - eliminating paint cycles while delivering structural grade strength for decades of service.

 

What Makes A847 Different

• Built for Structure: Cold-formed and welded to ASTM A847 specs - designed from the ground up as load-bearing hollow sections, not adapted from plate.

• Natural Protection: Self-forming oxide layer provides 4-8x the corrosion resistance of conventional HSS without coatings or maintenance schedules.

• Real Strength: 50 ksi minimum yield meets your structural calcs while the distinctive patina meets your design vision.

• Shop-Friendly: Welds, cuts, and drills like standard HSS - your fabricators already know how to work with it.

 

Where It Works

Buildings & Architecture: Structural frames, columns, exterior railings, canopy structures, feature elements that need to carry load and look good doing it.

Infrastructure: Bridge members, tower construction, industrial platforms, outdoor support structures exposed to weather year-round.

Site Work: Retaining walls, garden structures, art installations, site furniture - anywhere you need strength with character.

 

What We Stock

• Round Tube: Full range of diameters and wall gauges
• Square Sections: Standard column and post sizes
• Rectangular: Beam and lintel configurations
• Custom Cutting: We'll size it to your shop drawings

All material ships with mill certs. Standard 20' and 24' lengths, or we'll cut to your list.

 

The CortenUSA Advantage

We've been solving Corten supply problems for over two decades. Here's what that means for your A847 order:

• We Know HSS: Not just plate guys trying to sell tube - we understand structural section applications and specifications.

• Direct Mill Access: Our relationships mean better availability and pricing than going through distribution layers.

• Processing Capability: Need it cut, prepped, or staged for your schedule? We handle it.

• Technical Support: Questions on weathering performance, detailing, or fabrication? We've seen it before.

 

Let's Talk Specifics

Need A847 for an upcoming project?

Send us your size requirements, quantities, and timeline. We'll quote it same-day with real lead times and material availability.

A847 HSS - structural performance meets architectural presence. No paint. No maintenance. Just steel doing what it does best.