Black Square & Rectangular Steel Pipe (SHS / RHS Hollow Sections)

Our Black Carbon Steel Square & Rectangular Tubes (SHS/RHS) are manufactured from high-quality cold-formed or hot-rolled ERW carbon steel, compliant with ASTM A500 Grade B/C, EN 10219, and JIS G3466 standards.

Featuring superior structural weight-to-strength ratios and excellent weldability, our black hollow sections are widely used for building structural framing, steel trusses, machinery manufacturing, trailer chassis, and solar panel racking systems worldwide.

Technical Specifications & Available Size Range

Below are the engineering parameters and standard material grades for our structural black square and rectangular steel pipes:

Key Advantages for Global Engineering Projects

1, High Structural Efficiency & Load Resistance

 · Weight Reduction: Offers up to 20%–30% weight savings compared to traditional solid sections or heavy H-beams at equivalent load-bearing capacities.

 · Uniform Torsional Strength: Closed hollow geometry provides superior resistance to bending, twisting, and multi-directional stresses.

2, Excellent Weldability & Custom Fabrication

 · Low Carbon Steel Base: High-grade ERW carbon steel allows seamless field welding, plasma cutting, and mechanical jointing without preheating.

 · Custom Length Cuts: Cut precisely to 5.8m / 5.85m (for 20ft containers) or 11.8m / 12.0m (for 40ft containers) to lower your shipping cost per ton.

3, Surface Protection Options

Available with a black varnish protective coat or anti-rust oil finish to prevent surface corrosion during ocean shipment and temporary site storage.

Typical Structural Applications

 · Commercial & Industrial Building: Structural columns, roof trusses, space frames, curtain wall supports, and scaffolding structures.

 · Machinery & Transportation: Trailer chassis frames, agricultural implement structures, conveyor stands, and crane booms.

 · Energy & Infrastructure: Solar mounting structure posts, highway sign gantries, and protective fencing posts.

Seaworthy Export Packaging & Logistics via Tianjin Port

Located in Tangshan, China, adjacent to Tianjin Port, we specialize in cost-effective maritime steel shipping:

 · Hexagonal Bundle Packaging: Firmly strapped with high-tensile steel bands, end-capped (upon request), and fitted with lifting slings for fast port crane handling.

 · Anti-Rust Protection: Wrapped in inner moisture-resistant VCI film and outer waterproof woven sheeting for long-distance sea transit.

 · Maximized Container Payload: Precise bundling and custom lengths ensure maximum utilization up to 26–27 Metric Tons per container.

Frequently Asked Questions (FAQ)

Q1: What is the difference between SHS, RHS, and CHS?

A: These are international acronyms for structural hollow sections: SHS stands for Square Hollow Section, RHS for Rectangular Hollow Section, and CHS for Circular Hollow Section. We manufacture all three in black carbon steel and galvanized finishes.

Q2: What surface finishes do you provide for black steel tubes?

A: We supply Bare Black (uncoated), Lightly Oiled (anti-rust protection), and Black Painted/Varnished finishes depending on your project requirements.

Request an Instant Quote for Black Steel Pipes & Tubes

Looking for high-strength black square or rectangular steel tubes for your structural project? Contact our sales engineering team today for factory-direct pricing, Mill Test Certificates (MTC conforming to EN 10204 3.1), and shipping schedules within 24 hours.

 · Email: admin@tsrysteel.com

 · WhatsApp: +86 15176700707

 · Request a Pipe Quote Today →