SMSTEEL
SMSTEEL
Featured Hot-Rolled & Pickled ProductsHot Rolled Pickled and Oiled (HRPO) steel is an industrial-grade material that undergoes a critical surface treatment process. Standard hot-rolled steel often carries a thick layer of black iron oxide (mill scale) due to the high-temperature rolling process. To remove this scale and achieve a clean, smooth surface, the steel is "pickled" in an acidic bath—typically hydrochloric acid. After pickling, a thin layer of oil is applied to the surface to prevent oxidation and flash rusting before the steel reaches the final manufacturing floor.
As a leading Wholesale Pickled and Oiled Steel Supplier, STEP MILLION STEEL understands that HRPO steel serves as the bridge between standard hot-rolled and expensive cold-rolled steel. It offers the structural strength of hot-rolled material but with a surface finish that is ready for painting, welding, and high-precision laser cutting.
The pickling process removes all impurities and mill scale, providing a uniform, clean metallic finish essential for aesthetics and coating adhesion.
HRPO steel maintains the ductility of hot-rolled steel, making it ideal for deep drawing, bending, and complex stamping operations in the automotive sector.
By using HRPO instead of Cold Rolled steel, manufacturers can save significantly on raw material costs while achieving comparable surface performance.
Globally, the shift towards automated manufacturing and robotic welding requires steel with consistent surface tension and no mill scale. HRPO steel has become the gold standard for CNC laser cutting factories in Europe and North America.
As the automotive industry pivots towards electric vehicles (EVs), the demand for high-strength, low-alloy (HSLA) pickled steel is surging. It provides the necessary strength for battery casings and chassis components while reducing weight.
Modern "Pickled and Oiled Steel Factories" are investing in closed-loop acid regeneration systems. China's leading factories, like STEP MILLION STEEL, are at the forefront of this green transition, ensuring sustainable production for global procurement.
Founded in 2010, STEP MILLION STEEL SUPPLY CHINA CO., LTD. has grown into a titan of the steel industry. With a 66,700 square meter facility and over 300 dedicated employees, we operate eight high-frequency welding lines and advanced pickling lines.
Our strategic partnerships with national giants like Hebei Iron and Steel Group, Baowu Group, and Shougang Group allow us to secure the highest quality raw materials. We sell over 700,000 tons of steel annually, with a turnover reaching nearly 4 billion yuan.
Tailored steel solutions for diverse global markets
With 15+ years in the industry, we provide technical consultancy to ensure the HRPO grade you choose matches your stamping or welding equipment requirements exactly.
Our commitment to quality eliminates the possibility of compensation claims. We source only from top-tier mills, ensuring material integrity and strict compliance with international industrial standards.
From small-scale trial orders to massive 100,000-ton monthly shipments, we offer flexible payment terms and expedited delivery schedules to integrate seamlessly into your supply chain.
Whether you are in South America, Southeast Asia, or the Middle East, Step Million Steel provides the passionate, trustable partnership needed to drive your manufacturing success.
Comprehensive Steel Product Range
