... according to customer design. usually,the bends consist of 3D,5D,7D even 12D series. pipe bend Pattern ... 40, 1-1/2 Inch size ANSI B16.49 3D hot induction seamless pipe bends, ASTM A234 WPB, STD ... R=5D, 3 Layer HDPE DIN30670 S-V Suface Finished 3D, 4D, 5D, 6D, 7D, 8D, 10D Pipe Bends Fittings ... to 72 inches size Carbon Steel 3D Bends, Stainless Steel 3D Bends, 3D pipe Bends, 3D Bend Pipe for flow systems ...