
Steel Profile Square Tube Galvanized Square Steel Pipe Tube. Wide Size Range: Square sizes 15*15-500*500mm and rectangular sizes 20*30-400*600mm available. Multiple Material Options: Available in ASTM A36, SS400, S235JR, S355JR, ST37, ST52, Q195, Q235, Q345. Customizable Length: Length can be customized according to specific customer requirements. Strict Quality Control: 100% inspection for finished products with Mill Test Certificate supplied. Fast Delivery for Stock: Stock products shipped in 2-5 days; common materials in 7-10 days. Flexible Payment Terms: Accept 30% TT deposit with 70% balance, or L/C payment. Professional Manufacturer: Factory with 7 production lines, 2 R&D engineers, and 46 employees. Global Shipping Options: Ship via DHL, UPS, FedEx, TNT, or sea freight for mass products.