China Factory ASTM A500 Square Steel Tube Grade:ASTM A500 Grade A ,Grade B ,Grade C,Grade D Type :ASTM A500 Square tubing,ASTM A500 Rectangle Tubing Section Size:2" x 2" to 12" x 12" Wall Thickness:120", 180", 188", 250", 313", 375", 500" Lengths:20', 24', 40', 48', Customer Specific Lengths Application:structural supports, building columns, highway signs, oil field services and communication towers. Tension test requirement Grade A/Grade B Tensile strength, min: 310Mpa/400Mpa Yield strength, min: 270Mpa/315Mpa Elongation in 50mm: 25%/23% Pipe end: square cut ends, with the burr held to a minimum or the burr shall be removed on the outside diameter, inside diameter or both. Packing 1.with narrow steel strips bundled or loose packing. 2. wrapped with waterproof cloth; 3. surpport extra requires if customers need If you require further information or you do not see what yo need in our web,please do not hesitate to contact us. Our customer service specialists will be happy to help you. FAQ Q:Can provide OEM/ODM service? A: Yes. Please feel free to contact us for more details discuss. Q: How is your Payment Term? A:T/T in advance. Other payment term we can also discuss. Q: Can we visit your factory? A:Warmly welcome. Once we have your schedule, we will arrange the professional sales team to follow up your case. Q:What is your advantage? A:We are the 100% manufacturer ,could guarantee the price is first-hand.