We are a factory specializing in producing high-quality ASTMA6 Q235 20# Seamless Welded Square Tube. Our products are made of premium grade materials and are rigorously tested to meet the ASTM A6 and GB/T3091-2008 standards. Our square tube is widely used in construction, machinery, and other industries due to its excellent physical properties and durability. It features high strength, toughness, and corrosion resistance, making it an ideal choice for heavy-duty applications. With our strict quality control measures and advanced production equipment, we guarantee the best possible results for our customers. Contact us today to learn more about our products and services.