Durable Black Square Tube for Greenhouse Frame Fabrication

Durable Black Square Tube for Greenhouse Frame Fabrication. Wide Size Range: OD 20x20-500x500mm, wall thickness 1.3-15.75mm, lengths 5.8m/6m or custom. High Strength Material: Made of high-quality carbon steel with high tensile strength and impact resistance. Custom Surface Treatment: Available in black, hot dip galvanized, painted, or other custom finishes. Custom Length Cutting: Standard 5.8m/6m or custom cut lengths acceptable for specific project needs. International Standards: Complies with ASTM A500, EN10219, JIS, DIN, and BS standards. Comprehensive Processing: Services include cutting, welding, galvanizing, painting, and surface treatments. Quality Inspection: 100% inspection including function and visual checks before shipment. Global Logistics: Located near Tianjin Port with efficient sea and land logistics for global delivery.