Specification: 4-Inch Square or Rectangular Steel Pipes
Specification: 4-Inch Square or Rectangular Steel Pipes
Standard Size
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Dimension: 4 inch × 4 inch = 100 mm × 100 mm
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Wall Thickness Options: 2.0 mm to 5.0 mm
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Length: Typically sold in 6 or 12-meter lengths, but pricing below is per meter
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Material: Mild Steel (Q235, ASTM A500 Gr B), uncoated (black) or hot-dip galvanized
Price Table – 4″ × 4″ Square Steel Pipe (Per Meter)
| Wall Thickness (mm) | Weight per Meter (kg) | Mild Steel Price per Meter (USD) | Galvanized Price per Meter (USD) |
|---|---|---|---|
| 2.0 mm | ~5.10 kg | $5.10 – $5.70 | $5.80 – $6.60 |
| 3.0 mm | ~7.40 kg | $7.40 – $8.30 | $8.30 – $9.50 |
| 4.0 mm | ~9.60 kg | $9.60 – $10.50 | $10.80 – $12.00 |
| 5.0 mm | ~11.70 kg | $11.70 – $12.90 | $13.10 – $14.50 |
Prices above are based on a steel rate of approximately $1.00 – $1.10 per kg for black steel, and $1.20 – $1.30 per kg for galvanized, based on Midwest U.S. and FOB China import pricing (July 2025).
Notes:
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Weight Calculation: Based on standard steel density (7.85 g/cm³)
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Coating Premium: Hot-dip galvanized pipes typically add 10%–20% depending on zinc coating weight (Z120–Z275)
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Price Range: Varies by source (domestic vs. imported), quantity ordered, and mill certification requirements
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Common Uses: Structural steel framing, mechanical supports, building columns, railings
Conclusion
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For 4″ × 4″ square mild steel pipes, expect to pay between $5.10 to $13.00 per meter, depending on wall thickness.
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Galvanized versions range from about $5.80 to $14.50 per meter.
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Larger quantities (5+ tons) often receive discounted pricing.
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Always confirm availability, freight, and cut-to-length options with suppliers in your region or through steel service centers.
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