Product Details

Square tube


Product Introduction

Square Tube
Square Tube, also known as Mild Steel Tube, is an un-galvanized hollow steel tube. It features high strength, good workability, and affordability, widely used in building structures, furniture manufacturing, machinery equipment, and transportation facilities. As it is uncoated, it's typically used indoors or after further processing (like galvanizing, painting, or powder coating).


➤ Specifications
▪️ Dimensions: 10×10mm ~ 400×400mm
▪️ Thickness: 1.0mm ~ 12.0mm
▪️ Cutting Service: Standard 6M, can be cut to required length
💡 Click to view the complete Square Tube Specification Table
Specification (mm × mm) Available Thickness (mm)
12.7×12.7 1.0, 1.5
16×16 1.5
19×19 1.2, 1.5
20×20 1.5, 1.8, 2.0
25×25 1.5, 1.8, 2.0, 2.3
30×30 1.5, 1.6, 1.8, 2.0, 2.3, 2.8, 3.0
38×38 1.2, 1.5, 1.8, 2.0, 2.3, 2.8, 3.0
40×40 1.5, 1.8, 2.0, 2.3, 2.8, 3.0
50×50 1.5, 1.8, 2.0, 2.3, 2.8, 3.0, 3.2, 4.0, 4.5, 6.0
60×60 1.8, 2.0, 2.3, 2.8, 3.0, 3.2, 4.0, 4.5, 6.0
70×70 (Fabricated Tube) 1.8, 2.0, 2.3, 3.0
75×75 (Fabricated Tube) 1.8, 2.0, 2.3, 3.0, 3.2, 4.0, 4.5, 6.0
80×80 2.0, 2.3, 2.8, 3.0, 3.2, 4.0, 4.5, 6.0
90×90 (Fabricated Tube) 2.3, 2.8, 3.0, 3.2, 4.0
100×100 1.8, 2.0, 2.3, 2.8, 3.0, 3.2, 4.0, 4.5, 6.0, 9.0, 12.0
125×125 3.2, 4.0, 6.0
150×150 3.2, 4.0, 4.5, 6.0
200×200 4.0, 4.5, 6.0, 9.0
250×250 9.0
➤ Product Features
▪️ High Structural Strength: Suitable for load-bearing supports and frame structures
▪️ Excellent Workability: Can be welded, bent, cut, and surface treated
▪️ Cost-Effective: More competitive pricing compared to stainless or galvanized square tubes
▪️ Flexible for Secondary Processing: Can be galvanized, painted, or rust-proofed as needed


➤ Applications
▪️ Building Structures: Partitions, frames, support structures
▪️ Furniture Manufacturing: Table and chair frames, display racks, storage shelves
▪️ Machinery & Equipment: Machine structures, industrial stands
▪️ Transportation Facilities: Railings, fences, light-duty supports


📞 Contact Us
If you have any needs for Square Tube , feel free to contact Guokai Steel!
📧 Email: sales@guokaisteel.com.tw
📩 Official Line Account: @guokai
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