
Black or Galvanized Steel Square Tube S235 Section. Comprehensive Material Options: Available in Q195, Q235, Q355 grades and S235, S355JR standards. Extensive Size Range: Square pipes from 20x20mm to 500x500mm with thickness 1.2mm to 20mm. Diverse Surface Treatments: Options include pre-galvanized (40-80g/m2) and hot-dipped galvanized (200-600g/m2). Global Standard Compliance: Meets EN10219, EN10210, GB/T 6728, JIS G3466, and ASTM A500 standards. 1-Year Warranty Coverage: Includes quality assurance for all mechanical equipment and pipes. Fast Delivery Capability: Delivery time ranges from 15 to 45 days based on order quantity. OEM Service Support: Strong R&D team available to assist with custom design and manufacturing. Competitive Factory Pricing: Direct factory sales offer prices 20 USD per ton lower than other suppliers.