... : carbon steel, alloy steel, stainless steel , seamless pipe, straight seam, spiral seam pipe.R Bend radius:3D≤R≤6000mm, (R=3D, 4D, 5D ... , 6D, 7D, 8D, 9D, 10D)Bend Angle:15, 30 ... , 45, 60, 90, 135, 180 or as customer's requirement.Length: straight ...