High Quality Square Steel Tubing (SHS & RHS)

Our High Quality Square Steel Tubing represents the premium standard in structural carbon steel hollow sections. Carefully manufactured to ensure precise dimensional accuracy and superior structural integrity, our steel tubing is divided into square hollow sections (SHS) and rectangular hollow sections (RHS).

Designed to meet the rigorous demands of modern engineering, these tubes are widely utilized in building construction, fencing, greenhouses, and low-pressure liquid delivery systems. Available in both black and galvanized finishes, our galvanized steel tubes are specially treated to deliver exceptional corrosion resistance, anti-rust properties, and acid resistance, thereby largely extending the service life of your infrastructure projects.

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High quality square steel tubings SHS and RHS

Technical Specifications

We provide one of the most comprehensive size ranges in the industry. Below is the detailed specification matrix for our high-quality square and rectangular tubing:

Square Hollow Section (SHS) Sizes

Size (mm) Thickness (mm) Size (mm) Thickness (mm)
19 * 19 0.6 - 1.5 80 * 80 1.5 - 6.0
20 * 20 0.6 - 1.5 90 * 90 2.0 - 6.0
25 * 25 0.8 - 2.75 100 * 100 2.3 - 6.0
30 * 30 1.0 - 2.75 120 * 120 2.5 - 6.0
32 * 32 1.0 - 3.0 125 * 125 2.5 - 6.0
38 * 38 1.0 - 3.0 150 * 150 3.0 - 8.0
40 * 40 1.0 - 3.5 200 * 200 4.0 - 12
50 * 50 1.0 - 5.0 250 * 250 5.0 - 12
60 * 60 1.0 - 6.0 300 * 300 6.0 - 12
70 * 70 1.5 - 6.0 400 * 400 6.0 - 12
75 * 75 1.5 - 6.0  

Rectangular Hollow Section (RHS) Sizes

Size (mm) Thickness (mm) Size (mm) Thickness (mm)
50 * 25 0.6 - 1.5 125 * 50 3.0 - 6.0
50 * 30 1.0 - 3.0 125 * 75 3.0 - 6.0
60 * 40 1.0 - 3.5 150 * 50 3.0 - 6.0
75 * 50 1.5 - 4.0 150 * 75 3.0 - 6.0
80 * 40 1.5 - 4.0 150 * 100 3.0 - 12
100 * 50 1.5 - 6.0 160 * 80 4.0 - 6.0
100 * 60 1.5 - 6.0 200 * 100 4.0 - 12
100 * 75 1.5 - 6.0 200 * 150 4.0 - 12
120 * 60 2.0 - 6.0 250 * 150 5.0 - 12
120 * 80 2.0 - 6.0 300 * 200 5.0 - 12
    400 * 200 5.0 - 12

Key Advantages

Extensive Size Matrix: Offering everything from light-duty 19x19mm (0.6mm thickness) tubes for delicate frameworks, to heavy-duty 400x400mm (12mm thickness) sections for major structural pillars, ensuring a perfect match for any engineering drawing.
Premium Surface Protection: Our galvanized steel tubes feature exceptional anti-rust and acid resistance properties. This high-quality coating forms a durable barrier that protects the core steel in highly corrosive or humid environments.
High Precision Manufacturing: The term “High Quality” reflects our strict dimensional tolerance control. We ensure uniform wall thickness and precise 90-degree square angles, making welding, bolting, and fabrication significantly easier and safer.

Product Applications

The versatility and high strength of our square and rectangular carbon steel tubes make them ideal for various fields, including:
Construction & Building: Primary frameworks, structural columns, and roofing supports.
Engineering: Mechanical equipment frames and heavy-duty industrial platforms.
Low Pressure Liquid Delivery: Specialized hollow sections engineered and tested for reliable fluid transportation.
Greenhouse Infrastructure: Acid-resistant and anti-rust galvanized tubing designed for humid agricultural environments.
Fencing & Security: High-strength posts and rails for perimeter fencing and gates.

Packaging & Delivery

Secure Packaging: All high-quality steel tubings are packed tightly in bundles secured by high-tensile steel strips. For galvanized surfaces, damp-proof protective materials can be applied to prevent white rust during transit.
Global Shipping: Dispatched from major Chinese ports (e.g., Tianjin), we offer highly efficient maritime logistics for global clients.
Container & Bulk Options: We optimize loading plans using 20ft/40ft containers or bulk carriers based on the tube lengths and order volume to minimize your freight costs.
Timely Delivery: With robust production capacity across our extensive size range, we ensure reliable lead times tailored to your project schedule.

Frequently Asked Questions (FAQ)

Q: What surface finishes do you provide for the square steel tubing?
A: We provide both black (bared/oiled) and galvanized finishes. The galvanized surface is highly recommended for projects requiring long-term anti-rust and acid resistance.

A: Yes. Because we offer a massive range of sizes (from 19x19mm to 400x400mm), we frequently consolidate mixed-size orders into single container shipments to optimize your inventory procurement.

A: Yes, certain specifications of our high-quality carbon steel tubes are manufactured and tested specifically for low-pressure liquid delivery applications.

A: We enforce strict quality control measures on outside dimensions, wall thickness, and surface finishes. Our tubes undergo rigorous testing to ensure they meet the structural demands of construction and engineering fields.

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