Angle Steel
U Beam
H Beam
I-BEAM
Steel Plate
Steel Sheet
High Strength Steel Plate
Special Steel Plate
Checkered Steel Plate
Galvanized Steel Sheet
Steel coil
Hot Rolled Coil
Cold Rolled Coil
Galvanized Coil
Steel Strip
Square Bar
Round Bar
Steel pipe
Welded Steel Pipe
Seamless Steel Pipe
Steel tube
Rectangular Tube
Steel Sheet Pile
Steel Purlin
Steel Fittings
Steel Fabrication
Square Tube
Square Tube
Size
10x10mm – 300x300mm
Thickness:
0.7mm – 12mm
Length:
6000mm/12000mm or customized upon request
Grades:
SS400, Q195, Q235, S235JR, ASTM A500, A36, etc.
Mills
Hoa Phat, Hoa Sen, Nam Kim, Viet Nhat, and Phu Xuan Viet
Standards:
JIS G3466, ASTM A500, EN10219, TCVN…
Key Advantages:
- Stable structure with good load-bearing capacity
- Corrosion resistance
- High aesthetic value
- Easy installation
- Wide range of sizes
High production output
Large manufacturing capacity to efficiently fulfill bulk orders and key projects.
Competitive pricing
Offering budget-friendly yet competitive prices while maintaining product quality.
Trusted by clients
Chosen by hundreds of domestic and international clients for consistent quality and professional service.
Describe Product
Mục lục
‘Square steel tube is a type of hollow steel with a square cross-section, produced from hot-rolled or cold-rolled steel through shaping and welding processes. It is widely used in construction and mechanical engineering due to its good load-bearing capacity, high aesthetic appeal, and ease of installation.
I. FEATURES
- Stable structure with good load-bearing capacity: The square shape helps distribute forces evenly, enhancing stiffness and stability in load-bearing structures.
- Corrosion resistance: Hot-dip galvanized square steel tubes have excellent oxidation resistance, making them suitable for outdoor or humid environments.
- High aesthetic value: Smooth surface that is easy to paint, suitable for both industrial and residential applications.
- Easy fabrication: Can be cut, drilled, welded, and bent as needed, saving construction time.
- Wide range of sizes: Available from small-sized tubes for interior use to large-sized tubes for industrial structures, meeting diverse requirements
| Tính chất vật lý(Mechanical Properties) | Tính chất hoá học(Chemical Composition) | |||||||
|---|---|---|---|---|---|---|---|---|
| Mác thép(Grade) | Độ bền chảy(Yeild Strength) (Mpa ~ N/mm2) Min |
Độ bền kéo(Tensile Strength) (Mpa ~ N/mm2) Min |
Độ giãn dài(Elongation) % |
C% | Si% | Mn% | P% | S% |
| SS400 | ≥ 245* | 400 – 510 | ≥ 21 | ≤ 0.29 | ≤ 0.40 | ≤ 1.6 | ≤ 0.050 | ≤ 0.050 |
| A36 | ≥ 250 | 400 – 550 | ≥ 20 | ≤ 0.26 | ≤ 0.40 | ≤ 0.040 | ≤ 0.050 | |
| Q235B | ≥ 235* | 375 – 500 | ≥ 26* | ≤ 0.20 | ≤ 0.30 | 0.30 – 0.70 | ≤ 0.045 | ≤ 0.045 |
| A572 Gr50 | ≥ 345* | 450 – 620 | ≥ 18 | ≤ 0.23 | 0.15 – 0.40 | 1.35 – 1.65 | ≤ 0.040 | ≤ 0.050 |
| Q355B | ≥ 355* | 470 – 630 | ≥ 22 | ≤ 0.24 | ≤ 0.55 | ≤ 1.6 | ≤ 0.035 | ≤ 0.035 |
II. TOLERANCE
Thickness tolerance: ±0.3mm
Edge (width) tolerance: ±1.0mm
Length tolerance: ±10mm
III. PACKAGING
Bundle weight: 1–3 tons per bundle (adjustable upon request)
IV. PRACTICAL APPLICATIONS
- Residential and industrial construction: used for columns, rafters, frames, bracing systems, iron gates, railings, etc.
- Interior and exterior decoration: used for making tables, chairs, shelves, partitions, canopy frames, etc.
- Mechanical fabrication: used in manufacturing machinery, equipment, and light structures.
- Advertising boards and supporting infrastructure: used for sign frames, signposts, fences, prefabricated buildings, etc.
V. SQUARE STEEL TUBE BRANDS
Currently, there are several well-known and reputable square steel tube brands on the market, including: Hoa Phat, Hoa Sen, Nam Kim, Viet Nhat, and Phu Xuan Viet, ...
