ASTM A36 pre-galvanized mild steel rectangular and square welded tube is a versatile structural material widely used in construction, machinery, furniture, and general engineering applications. Made from high-quality low-carbon steel, it combines excellent strength, smooth surface finish, and easy fabrication characteristics suitable for welding, cutting, punching, and bending.

The pre-galvanized coating provides enhanced corrosion protection compared with plain black steel tubes, making it suitable for both indoor and outdoor use. The zinc layer ensures long service life, reduces maintenance cost, and provides aesthetic appearance for visible installations. Available in square and rectangular shapes with thickness from 0.8mm to 12mm and size up to 300×300mm, this product can be customized according to customer drawings or mechanical requirements.

Manufactured under strict ASTM A36 and EN standards, all tubes are subjected to mechanical testing, zinc coating measurement, and surface inspection before packaging. Each piece is wrapped with anti-rust film and steel straps for safe export delivery. Our factory provides OEM service, laser cutting, drilling, slotting, and surface polishing to meet different project specifications.

This product is ideal for steel structures, building frameworks, warehouse racks, transport equipment, solar mounting systems, and decorative metal fabrication. With stable performance, competitive factory price, and consistent quality control, it has become a preferred material for global structural and engineering clients.