PROBLEM TO BE SOLVED: To provide a cage frame excellent in corrosion resistance and durable for long-term use. SOLUTION: The cage frame 1 is a frame body 115 formed of a steel pipe, a floating body 100 installed so as to closely contact the surface of the frame body 115 over the entire length of the frame body 115 without a gap, and exposed from the floating body 100. However, at least the metal portion in the splashed portion of seawater is thicker than the design plate thickness based on strength and rigidity by the corrosion allowance calculated based on the corrosion prevention speed (the mooring metal fitting 13, the intermediate hanging metal fitting 14, and A column support metal fitting 113). [Selection diagram] Figure 1【課題】耐食性に優れ、長期使用に耐える生簀用枠体を提供すること。【解決手段】生簀用枠体１は、鋼管によって形成される枠体１１５と、枠体１１５の全長にわたって枠体１１５の表面に隙間なく密着するように設置される浮体１００と、浮体１００から露出し、少なくとも海水の飛沫部にある金属部分が、強度及び剛性を基準とした設計板厚より防食速度に基づいて算出される腐食代の分だけ厚い金具（係留金具１３、中間吊り金具１４、及び支柱支持金具１１３）と、を備える。【選択図】図１
