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Help CenterSquare Steel/Square Tube/Hot-dip Galvanized SquarePipe，Q235B, Q355B, Q195, 20#，GB/T 6728, GB/T 3094, ASTM, JIS, EN
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Square Steel/Square Tube/Hot-dip Galvanized SquarePipe，Q235B, Q355B, Q195, 20#，GB/T 6728, GB/T 3094, ASTM, JIS, ENNegotiableMOQ: 5 Metric Tons -
Square Steel/Square Tube/Hot-dip Galvanized SquarePipe，Q235B, Q355B, Q195, 20#，GB/T 6728, GB/T 3094, ASTM, JIS, ENNegotiableMOQ: 5 Metric Tons
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Square Steel/Square Tube/Hot-dip Galvanized SquarePipe，Q235B, Q355B, Q195, 20#，GB/T 6728, GB/T 3094, ASTM, JIS, ENNegotiableMOQ: 5 Metric Tons
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Steel Billet/Square Billet/Carbon Steel Billet，Q235B, Q355B, 3SP, 1008, 1010, 1015, 1020, 1025, 1035, 1040NegotiableMOQ: 5 Metric Tons
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Steel Billet/Square Billet/Carbon Steel Billet，Q235B, Q355B, 3SP, 1008, 1010, 1015, 1020, 1025, 1035, 1040NegotiableMOQ: 5 Metric Tons
1. Product Name
Square Steel Pipe / Square Tube, Rectangular Steel Pipe / Rectangular Tube, Hot-dip Galvanized Square Pipe, Black Square Pipe, Seamless Square Pipe, Welded Square Pipe
2. Application Standards
GB/T 6728, GB/T 3094, ASTM, JIS, EN and other international standards.
3. Material Grades
Q235B, Q355B, Q195, 20#, etc.
4. Specifications
- Square Pipe: 20×20mm to 600×600mm
- Rectangular Pipe: 20×30mm to 500×600mm
- Wall Thickness: 0.8mm to 25mm
- Length: 6m, 9m, 12m, or custom length as required
5. Surface Treatment
1. Hot-dip Galvanized: Uniform zinc coating with strong adhesion, corrosion-resistant, suitable for outdoor, steel structure and curtain wall projects.
2. Electro-galvanized: Bright surface, cost-effective, suitable for indoor decoration.
3. Black Pipe (Uncoated): Original steel surface, excellent for painting, welding and cost-sensitive projects.
4. Painting/ Oil Coating: Customized anti-rust treatment available.
6. Manufacturing Process
- Welded Square Pipe: High-frequency direct current welding, high precision and good forming.
- Seamless Square Pipe: Processed from seamless steel pipes, high pressure resistance and structural strength.
7. Product Performance
- High bending, compression and torsion resistance.
- Excellent weldability, machinability and ease of cutting/installation.
- Galvanized versions feature superior corrosion resistance and long service life.
- High dimensional accuracy, smooth surface and no deformation.
8. Application Areas
- Building steel structures, factory columns and beams.
- Curtain wall engineering, glass support and framework structures.
- Machinery manufacturing, equipment frames, shelves and guardrails.
- Decoration, doors/windows, advertising brackets.
- Bridges, road facilities, containers and container houses.
9. Packing & Delivery
- Standard Packing: Steel strip bundling, moisture-proof packaging.
- Export Packing: Palletizing, stretch wrapping, marking available.
- Transportation: Suitable for land, sea and container shipping.
10. Product Advantages
- Complete specifications and sufficient stock for fast delivery.
- Customizable sizes, thickness and length.
- Stable quality with quality certificate and inspection report available.
- Ideal for engineering procurement, foreign trade and bulk wholesale.
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