1. Introduction Our sacrificial anode (abbreviation: aluminum anode) according to GB / T 4948-2002 research and production of aluminum alloy suitable for seawater ships, machinery and equipment, ballast tanks, tank walls, coastal facilities, submarine pipes, steel pile wharf, offshore platforms, cables and other facilities of the cathodic protection of metal corrosion. 2. storage tube inside the chemical composition of aluminum sacrificial anodes Name Model Specification / mm Weight / kg A × (B1 + B2) × C aluminum sacrificial anodes AC-1 750 × (115 + 135) × 130 35.0 aluminum sacrificial anodes AC- 2 500 × (115 + 135) × 130 23.0 aluminum sacrificial anodes AC-3 500 × (105 + 135) × 100 16.0 aluminum sacrificial anodes AC-4 300 × (105 + 135) × 100 10.0