1. Introduction Our aluminum zinc cadmium line (ZAC series) sacrificial anode product (referred to as: zinc anode) by the China Classification Society (CCS) recognized quality standards in line with GB / T4950-2002 standard chemical composition of zinc anode meet the US MIL-A-18001H and ASTM-B418 (Type 1) standard. The product has the following characteristics 1. Self-soluble zinc alloy sacrificial anodes, high current efficiency, anode current occurrence good self-regulating properties. 2. Protection of years longer, up to 20 to 30 years, and usually does not occur "over protective" phenomenon. 2, the chemical composition of the chemical elements zinc anode Al Cd impurity, not more than Cu Pb Si Zn content of Fe% 0.3-0.6 0.05-0.12 0.005 0.005 0.006 0.125 3 margin, zinc anode electrochemical performance performance open-circuit potential -V (SCE) work potential -V (SCE) actual capacity A? h / kg current efficiency% dissolved in seawater condition -1.09 ~ -1.05 -1.05 ~ -1.00 ≥780 ≥95 corrosion product is easy to fall off, the surface of the soil uniformly dissolved ≤-1.05 ≤- 1.03 ≥530 ≥65 Note 1: The reference electrode - saturated calomel electrode Note 2: Media - seawater using artificial seawater; soil medium using moist soil, and added around the anode filler. 4, the ballast tanks of zinc alloy sacrificial anodes Model Specifications Model Specifications / mm Weight / kg A × (B1 + B2) × C ZT-1 500 × (115 + 135) × 130 56.0 ZT-2 1500 × (65 + 75 ) × 70 50.0 ZT-3 500 × (110 + 130) × 120 50.0 ZT-4 1000 × (58.5 + 78.5) × 68 33.0 ZT-5 800 × (56 + 74) × 65 25.0 ZT-6 1150 × (48 +54) × 51 20.0 ZT-7 250 × (80 + 100) × 85 13.0 ZT-8 200 × (70 + 90) × 70 7.5