In this video, we walk through a 4.5mm CuNi 90/10 45-degree elbow (8", BW, EEMUA 146 Sec.1) and show how it performs in compact piping layouts. You'll see a close-up comparison of the 45° and 90° bend geometry, a step-by-step butt-weld fit-up demonstration, and a flow-path visualization explaining how the gentler angle reduces pressure drop and turbulence. We also cover wall-thickness verification, marking and traceability checks, and practical installation tips for seawater and other corrosive service. Ideal for engineers, fabricators, and procurement teams evaluating copper-nickel fittings for space-constrained systems.