SDR11 Poly sweep bends offer substantial benefits to pipeline designers looking for improved flows, or in the case of slurry lines, reduced wear. Poly Sweep bends are made from HDPE pipe and are formed with both a constant radius and a consistent diameter. Radius options start at R=1.5D and go through to R=3D. Angle options are technically not limited, however common angles in Poly Sweep Bends are 15º, 22.5º, 30º, 45º, 60º and 90