Galvanized Gi Square Rectangular Tubing Sizes
✔ Thickness: 0.6mm - 20mm
✔ Material:Q195,Q235,Q355
✔ Surface Treatment:Hot dip galvanized;Pre galvainzed
✔ Standard: ASTM A500, EN10219, JIS3466, GB/T 6728, EN10210.
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Galvanized steel square and rectangular tubing is widely used in construction, fencing, furniture, and structural applications due to its strength, corrosion resistance (thanks to zinc coating), and versatility.
Galvanization method for steel box section
Hot-Dip Galvanized (HDG): Thicker zinc coating, better corrosion resistance.
Square pipe sizes: 20x20mm to 400x400mm;
Rectangular pipe sizes: 20x40mm to 300x500mm
Zinc coating: 200-600g/m2
Pre-Galvanized (GI): Coated before forming, moderate corrosion resistance.
Gi square pipe sizes: 10x10mm to 100x100mm;
Gi rectangular tube sizes: 6x10mm to 50x100mm
Zinc coating: 40-80g/m2
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gi galvanized steel square rectangular tube sizes
| ASTM A500 GR.A/B/C Cold Formed Hollow Section | |||
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Square Pipes Sizes |
Rectangular Tubes Sizes |
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|
Size(mm) |
Thickness(mm) |
Size(mm) |
Thickness(mm) |
|
10x10 |
0.6-1.0 |
20x10 |
0.6-1.0 |
|
12×12 |
0.6-1.0 |
25x12 |
0.6-1.0 |
|
16x16 |
0.6-1.2 |
38x19 |
0.6-1.5 |
|
19x19 |
0.6-1.5 |
50x25 |
0.6-1.5 |
|
20×20 |
0.6-1.5 |
50x30 |
1.0-3.0 |
|
25x25 |
1.0-2.75 |
60x40 |
1.5-3.5 |
|
30x30 |
1.0-2.75 |
75x50 |
1.5-4.0 |
|
32×32 |
1.0 -3.0 |
80x40 |
1.5-4.0 |
|
38x38 |
1.0 -3.0 |
100x50 |
2.0-6.0 |
|
40x40 |
1.0 -3.5 |
100x60 |
2.0-6.0 |
|
50×50 |
1.0 -5.0 |
100x75 |
2.0-6.0 |
|
60x60 |
1.0-6.0 |
120×60 |
3.0-6.0 |
|
63.5x63.5 |
1.0 -6.0 |
120x80 |
3.0 -6.0 |
|
70×70 |
1.5-6.0 |
125x50 |
3.0-6.0 |
|
75x75 |
1.5-6.0 |
125x75 |
3.0-6.0 |
|
80x80 |
2.0-6.0 |
150x50 |
3.0 -6.0 |
|
90 x90 |
2.0 -6.0 |
150x75 |
3.0 -6.0 |
|
100x100 |
2.3-6.0 |
150x100 |
4.0 -12 |
|
120 x120 |
4.0-6.0 |
160x80 |
4.0-6.0 |
|
125x125 |
4.0-6.0 |
175x100 |
4.0-12 |
|
150x150 |
4.0 -8.0 |
200x100 |
4.0 -12 |
|
200x200 |
6.0-12 |
200x150 |
4.0 -12 |
|
250 x250 |
6.0-12 |
250x150 |
5.0-12 |
|
300x300 |
6.0-12 |
300x200 |
5.0 -12 |
|
350x350 |
6.0 -12 |
350x250 |
5.0 -12 |
|
400x400 |
6.0-12 |
400x200 |
5.0 -12 |
|
500x500 |
6.0-16 |
500x300 |
5.0-16 |
Features of galvanized gi square rectangular tubing
- Superior Corrosion Resistance
The zinc coating (zinc-iron alloy layer) effectively blocks air and moisture, preventing rust. Ideal for humid, acidic, or coastal environments.
- High Strength
Gi square and rectangular tube have high tensile, compressive and bending strengths, can withstand large loads and pressures, and are suitable for making various structural parts.
- Stability
Galvanised square and rectangular tube has high dimensional accuracy, stable structure, and is not easy to deform, which can ensure that the processed products have high precision and stability.
- Aesthetic & Durable Finish
Smooth, shiny zinc surface requires no additional painting, suitable for visible structures (e.g., railings, architectural frames).
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