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China Factory ASTM A500 Square Steel Tube
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:...