Detailed Product Description Name: special-shape steel pipeThickness: 0.5mm-20mmOuter diameter: 5mm-120mmLength: 2m-8mUsage:machinery, automobile fitting, metal products,fasteners, machinery manufacture, ironware and so on, Grade: EN 10297-1, EN 10305-1, EN 10277, DIN 2391-2, DIN 1629, ASTM A572, ASTM A53, ASTM A519, JIS G3445, JIS G3444, JIS G3441, etc