Square Steel Tube
· Excellent structural strength and stable load-bearing performance
· High dimensional accuracy, smooth surface, uniform wall thickness
· Easy to weld, cut, drill and install
· Good corrosion resistance (galvanized / black / painted available)
· Long service life, low maintenance cost
· Widely used in construction, steel structures, machinery, furniture, scaffolding, etc.
1. Product Overview
Square and rectangular steel pipes, also known as box section hollow profiles, are high-strength structural steel materials manufactured through cold forming and high-frequency welding processes. Our factory supplies welded and seamless square & rectangular pipes in carbon steel and stainless steel materials, covering standard and customized specifications. Featuring uniform wall thickness, smooth surface, precise dimensional tolerance and excellent structural stability, all products comply with international manufacturing standards. With high tensile strength, outstanding corrosion resistance and cost-effectiveness, our steel pipes are widely applied in global construction, mechanical manufacturing, transportation and other industries, serving as premium structural load-bearing steel materials for international markets.
All products undergo strict full-process quality inspection from raw material procurement to finished product delivery. With stable performance, the service life can reach 10-15 years under standard working conditions, fully meeting the requirements of high-standard engineering and commercial scenarios worldwide.
2. Product Specificatio
We support mass production of standard specifications and provide all-round customization of size, material, surface treatment and fixed length according to customers’ personalized requirements.
Item | Detailed Parameters |
Material Grade | Carbon Steel: Q195, Q215, Q235, Q345; Stainless Steel: 201, 304, 316L, 310S, 321, 2205, 2507, 904L |
Product Type | Welded Square/Rectangular Pipe, Seamless Square/Rectangular Pipe |
Size Range | Side Length: 10mm - 1020mm; Wall Thickness: 0.6mm - 50mm (custom non-standard sizes available) |
Surface Treatment | Black Pipe (Pickled & Oiled), Hot-Dip Galvanized, Pre-Galvanized, Painted, Powder Coated |
Execution Standard | GB/T 3091-2008, BS 1387, ASTM-A53, EU Standards |
Product Length | 6m, 12m fixed length / Custom arbitrary length available |
Dimensional Tolerance | Strictly compliant with international tolerance standards, flat & smooth pipe ends, no burrs and no deformation |
MOQ | 1 Ton (Small trial orders are acceptable) |


