SMSTEEL
SMSTEEL
The 50*50 square tube, commonly known as a Square Hollow Section (SHS), represents one of the most versatile structural elements in the modern industrial world. As global urbanization accelerates, the demand for standardized, high-strength steel components has reached unprecedented levels. From the soaring skylines of Dubai to the sprawling solar farms in the Australian outback, the 50x50mm profile serves as the "DNA" of modern engineering.
The global structural steel market is projected to grow at a CAGR of 5.5%, driven by modular construction and green energy infrastructure.
Manufacturers are transitioning to low-carbon production methods, utilizing recycled scrap steel and renewable energy to power arc furnaces.
Advanced laser-cutting technology and automated welding have reduced tolerance margins to ±0.05mm, ensuring perfect assembly fits.
Purchasing managers across the globe are no longer just looking for "steel." They are seeking Reliability, Certification, and Logistics Efficiency. In North America, the focus is on ASTM A500 standards for building frames. In Europe, EN 10219 compliance is mandatory for structural applications. Our factory bridges these regional requirements by offering dual-certified products that meet the world's most stringent safety codes. The rise of "Just-In-Time" (JIT) manufacturing means that global buyers require factories like ours that can maintain a monthly output of 100,000 tons to prevent supply chain bottlenecks.
Our production facilities cover over 66,700 square meters factory, and have more than 300 employees and eight High Frequency welded lines. Each line has a complete set of equipment to accomplish at least five production steps. All of this gives us a monthly output of 100,000 tons, half of which is exported. These facilities also include a molding workshop complete with 20 R&D engineers possessing over 10 years’ experience.
Founded in 2010, STEP MILLION is a leading steel material supplier and manufacturer in China. We specialize in producing and supplying: pre-galvanized steel pipe, hot-dip galvanized steel pipe, ERW pipe, square and rectangular tube, scaffolding tube, steel plate coils, and more. Our products are widely used in construction, greenhouse, fence, household appliances, and the automotive industry.
Years of Industry Excellence
Tons Annual Domestic Sales
Countries Exported To
Annual Turnover (CNY)
Over 20 inspectors, with over 10 years’ experience, will find the suitable raw materials for your order. All of our raw materials have GB, ASTM, BS or DIN certifications. CE certifications are available upon request. To accomplish this, we use testing equipment from Germany and Japan. We have established long-term strategic partnerships with industry giants such as Baowu Iron and Steel Group and Anshan Iron and Steel Group.
The 50*50 square tube finds critical utility across diverse sectors:
Skeleton frames for buildings, trusses, and structural support.
Internal brackets for washing machines, fridges, and HVAC units.
Support purlins and rafters for lightweight roofing systems.
Chassis components and roll cages for heavy-duty vehicles.
Fencing posts, storage racks, and industrial furniture.
Mounting frames for electrical transformers and generators.
Technical expertise and operational excellence define our competitive advantage. With over 15 years of industry experience, we possess a profound understanding of client requirements while maintaining a highly competitive market position. Quality control remains our core priority, with rigorous production monitoring systems designed to eliminate the possibility of compensation claims.
All products originate from reputable mills, utilizing the latest technological advancements in strict accordance with international standards.
Inquiries are addressed within 24 hours, with comprehensive solutions provided within 48 hours.
We accept small-scale initial orders to facilitate trust before formal long-term partnerships.
As a leading China-based manufacturer, we leverage an integrated supply chain that allows us to source high-grade Q195-Q355 steel at optimal prices. Our 50*50 square tubes benefit from advanced galvanizing baths that ensure a zinc coating of up to 275g/m², providing superior corrosion resistance in salty or humid environments. For the global buyer, this means a product that lasts 20-30 years without structural degradation.
