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Mild Carbon Steel Square Tube Structural
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Mild Carbon Steel Square Tube Structural

✔ Size:20x20mm to 400x400mm
✔ Thickness: 0.6mm - 20mm
✔ Material:Q195,Q235,Q355
✔ Surface Treatment:Hot dip galvanized;Pre galvainzed;Black
✔ Standard: ASTM A500, EN10219, JIS3466, GB/T 6728, EN10210.
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Product Introduction

Tianjin YOUFA International Trade Co.,Ltd is one of the most experienced manufacturers and suppliers of mild carbon steel square tube structural in China. Welcome to wholesale bulk high quality customized produts at low price from our factory. For price list and cheap products, contact us now.

 

Square tube structural steel is commonly used in construction and manufacturing industries. Low carbon content relatively good mechanical properties along with high quality weldability make it a common choice in fabrication and structural applications. Its square shape makes it ideal for building frames, supports, and other structures that require strength and stability.

Carbon Steel Square Tube

 

 

  • Finish: Cold Formed
  • Condition: Welded or Seamless
  • Applications: general machinery, structural use, furniture, fabrication
  • Surface Treatment Options:

Black (Mill Finish): Bare steel, prone to rust.

Galvanized: Zinc-coated for corrosion resistance.

Powder-Coated/Painted: Enhanced aesthetics & protection.

  • Available in full bars or cut to size lengths, production cutting available

50x50 square tubing price

IMG8830

 

structural steel square tube sizes

 

Square Hollow Section Sizes Weight Height Width W.T.
kg/m mm mm mm
20 x 20 x 2 SHS 1.1 20 20 2
20 x 20 x 2.5 SHS 1.3 20 20 2.5
25 x 25 x 2 SHS 14 25 25 2
25 x 25 x 2.5 SHS 1.7 25 25 2.5
25 x 25 x 3 SHS 2 25 25 3
30 x 30 x 2 SHS 1.7 30 30 2
30 x 30 x 2.5 SHS 2.1 30 30 2.5
30 x 30 x 3 SHS 2.5 30 30 3
40 x 40 x 2.5 SHS 2.9 40 40 2.5
40 x 40 x 3 SHS 3.4 40 40 3
40 x 40 x 3.2 SHS 3.6 40 40 3.2
40 x 40 x 3.6 SHS 4 40 40 3.6
40 x 40 x 4 SHS 4.4 40 40 4
40 x 40 x 5 SHS 5.3 40 40 5
50 x 50 x 2.5 SHS 3.7 50 50 2.5
50 x 50 x 3 SHS 4.4 50 50 3
50 x 50 x 3.2 SHS 4.6 50 50 3.2
50 x 50 x 3.6 SHS 5.1 50 50 3.6
50 x 50 x 4 SHS 5.6 50 50 4
50 x 50 x 5 SHS 6.9 50 50 5
50 x 50 x 6 SHS 8 50 50 6
50 x 50 x 6.3 SHS 8.3 50 50 6.3
60 x 60 x 2.5 SHS 4.5 60 60 2.5
60 x 60 x 3 SHS 5.3 60 60 3
60 x 60 x 3.2 SHS 5.6 60 60 3.2
60 x 60 x 3.6 SHS 6.3 60 60 3.6
60 x 60 x 4 SHS 6.9 60 60 4
60 x 60 x 5 SHS 8.4 60 60 5
60 x 60 x 6 SHS 9.9 60 60 6
60 x 60 x 6.3 SHS 10.3 60 60 6.3
60 x 60 x 8 SHS 12.5 60 60 8
70 x 70 x 3 SHS 6.2 70 70 3
70 x 70 x 3.2 SHS 6.6 70 70 3.2
70 x 70 x 3.6 SHS 7.4 70 70 3.6
70 x 70 x 4 SHS 8.2 70 70 4
70 x 70 x 5 SHS 10 70 70 5
70 x 70 x 6 SHS 11.8 70 70 6
70 x 70 x 6.3 SHS 12.3 70 70 6.3
70 x 70 x 8 SHS 15 70 70 8
80 x 80 x 3 SHS 7.2 80 80 3
80 x 80 x 3.2 SHS 7.6 80 80 3.2
80 x 80 x 3.6 SHS 8.5 80 80 3.6
80 x 80 x 4 SHS 9.4 80 80 4
80 x 80 x 5 SHS 11.6 80 80 5
80 x 80 x 6 SHS 13.6 80 80 6
80 x 80 x 6.3 SHS 14.2 80 80 6.3
80 x 80 x 8 SHS 17.8 80 80 8
90 x 90 x 5 SHS 13.1 90 90 5
90 x 90 x 6 SHS 15.5 90 90 6
90 x 90 x 6.3 SHS 16.2 90 90 6.3
90 x 90 x 8 SHS 20.1 90 90 8
100 x 100 x 3.6 SHS 10.8 100 100 3.6
100 x 100 x 4 SHS 11.9 100 100 4
100 x 100 x 5 SHS 14.7 100 100 5
100 x 100 x 6 SHS 17.4 100 100 6
100 x 100 x 6.3 SHS 18.2 100 100 6.3
100 x 100 x 8 SHS 22.6 100 100 8
100 x 100 x 10 SHS 27.4 100 100 10
120 x 120 x 4 SHS 14.4 120 120 4
120 x 120 x 5 SHS 18 120 120 5
120 x 120 x 6 SHS 21.2 120 120 6
120 x 120 x 6.3 SHS 22.2 120 120 6.3
120 x 120 x 8 SHS 27.6 120 120 8
120 x 120 x 10 SHS 33.7 120 120 10
120 x 120 x 12 SHS 39.5 120 120 12
120 x 120 x 12.5 SHS 40.9 120 120 12.5
140 x 140 x 5 SHS 21 140 140 5
140 x 140 x 6 SHS 24.9 140 140 6
140 x 140 x 6.3 SHS 26.1 140 140 6.3
140 x 140 x 8 SHS 32.6 140 140 8
140 x 140 x 10 SHS 40 140 140 10
140 x 140 x 12 SHS 47 140 140 12
140 x 140 x 12.5 SHS 48.7 140 140 12.5
150 x 150 x 5 SHS 22.6 150 150 5
150 x 150 x 6 SHS 26.8 150 150 6
150 x 150 x 6.3 SHS 28.1 150 150 6.3
150 x 150 x 8 SHS 35.1 150 150 8
150 x 150 x 10 SHS 43.1 150 150 10
150 x 150 x 12 SHS 50.8 150 150 12
150 x 150 x 12.5 SHS 52.7 150 150 12.5
150 x 150 x 16 SHS 65.2 150 150 16
160 x 160 x 5 SHS 24.1 160 160 5
160 x 160 x 6 SHS 28.7 160 160 6
160 x 160 x 6.3 SHS 30.1 160 160 6.3
160 x 160 x 8 SHS 37.6 160 160 8
160 x 160 x 10 SHS 46.3 160 160 10
160 x 160 x 12 SHS 54.6 160 160 12
160 x 160 x 12.5 SHS 56.6 160 160 12.5
160 x 160 x 16 SHS 70.2 160 160 16
180 x 180 x 5 SHS 27.3 180 180 5
180 x 180 x 6 SHS 32.5 180 180 6
180 x 180 x 6.3 SHS 34 180 180 6.3
180 x 180 x 8 SHS 42.7 180 180 8
180 x 180 x 10 SHS 52.5 180 180 10
180 x 180 x 12 SHS 62.1 180 180 12
180 x 180 x 12.5 SHS 64.4 180 180 12.5
180 x 180 x 16 SHS 80.2 180 180 16
200 x 200 x 5 SHS 30.4 200 200 5
200 x 200 x 6 SHS 36.2 200 200 6
200 x 200 x 6.3 SHS 38 200 200 6.3
200 x 200 x 8 SHS 47.7 200 200 8
200 x 200 x 10 SHS 58.8 200 200 10
200 x 200 x 12 SHS 69.6 200 200 12
200 x 200 x 12.5 SHS 72.3 200 200 12.5
200 x 200 x 16 SHS 90.3 200 200 16
220 x 220 x 6 SHS 40 220 220 6
220 x 220 x 6.3 SHS 41.9 220 220 6.3
220 x 220 x 8 SHS 52.7 220 220 8
220 x 220 x 10 SHS 65.1 220 220 10
220 x 220 x 12 SHS 77.2 220 220 12
220 x 220 x 12.5 SHS 80.1 220 220 12.5
220 x 220 x 16 SHS 100 220 220 16
250 x 250 x 5 SHS 38.3 250 250 5
250 x 250 x 6 SHS 45.7 250 250 6
250 x 250 x 6.3 SHS 47.9 250 250 6.3
250 x 250 x 8 SHS 60.3 250 250 8
250 x 250 x 10 SHS 74.5 250 250 10
250 x 250 x 12 SHS 88.5 250 250 12
250 x 250 x 12.5 SHS 91.9 250 250 12.5
250 x 250 x 16 SHS 115 250 250 16
260 x 260 x 6 SHS 47.6 260 260 6
260 x 260 x 6.3 SHS 49.9 260 260 6.3
260 x 260 x 8 SHS 62.8 260 260 8
260 x 260 x 10 SHS 77.7 260 260 10
260 x 260 x 12 SHS 92.2 260 260 12
260 x 260 x 12.5 SHS 95.8 260 260 12.5
260 x 260 x 16 SHS 120 260 260 16
300 x 300 x 6 SHS 55.1 300 300 6
300 x 300 x 6.3 SHS 57.8 300 300 6.3
300 x 300 x 8 SHS 72.8 300 300 8
300 x 300 x 10 SHS 90.2 300 300 10
300 x 300 x 12 SHS 107 300 300 12
300 x 300 x 12.5 SHS 112 300 300 12.5
300 x 300 x 16 SHS 141 300 300 16
350 x 350 x 8 SHS 85.4 350 350 8
350 x 350 x 10 SHS 106 350 350 10
350 x 350 x 12 SHS 126 350 350 12
350 x 350 x 12.5 SHS 131 350 350 12.5
350 x 350 x 16 SHS 166 350 350 16
400 x 400 x 8 SHS 97.9 400 400 8
400 x 400 x 10 SHS 122 400 400 10
400 x 400 x 12 SHS 145 400 400 12
400 x 400 x 12.5 SHS 151 400 400 12.5
400 x 400 x 16 SHS 191 400 400 16
400 x 400 x 20 SHS 235 400 400 20

 

 

Advantages of mild steel Square Tubing in Buildings

01/

High Strength-to-Weight Ratio

Strong yet lightweight: Square tubes provide excellent load-bearing capacity without excessive weight, reducing foundation costs.Resists bending & buckling: The shape distributes loads evenly across all sides, making it ideal for columns, beams, and trusses.

02/

Easy Fabrication & Installation

Flat surfaces simplify welding, bolting, and attaching panels (unlike round tubes).Modularity: Pre-cut and pre-welded sections speed up assembly (common in prefab buildings).
Compatible with other materials: Easily integrates with concrete, wood, or glass.

03/

Superior Torsional Rigidity

Resists twisting better than round or rectangular tubes, crucial for seismic zones or high-wind areas.Stable for cantilevers: Ideal for balconies, signage, and overhead structures.


04/

Space Efficiency & Aesthetic Flexibility

Sleek, modern look: Clean lines suit contemporary architectural designs.Custom finishes: Available in galvanized, powder-coated, or painted options.

05/

Cost-Effective

Square structural tubing is cost-effective for industrial applications because of its strength and longevity. It has a long lifespan and relatively low maintenance which contributes to cost savings over time.

06/

Durability

A500 Structural Steel tubing is designed to withstand harsh environmental conditions, with exposure to extreme temperatures, moisture, and corrosive elements.


FAQ

Q:A500 Vs. A53 Steel Pipe

Q:Rectangular Tubes Vs Square Tubes?

Q:ASTM A500 Welded Carbon Steel Structural Tubing?

Q:What Are The Gi Pipe Sizes?

 

 

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