不锈钢法兰与碳钢法兰：您应该选择哪一种？
选择正确的法兰材料会影响成本、性能和使用寿命。 本指南对不锈钢和碳钢法兰进行了比较。
不锈钢法兰 - 优势
- 卓越的防锈和防化学品腐蚀性能
- 卫生 - 食品、饮料、制药的理想选择
- 耐温性 - 从低温到高温
- 维护成本低--无需涂层
- 常见牌号304/304L、316/316L、321、347、904L、2205 双相钢
碳钢法兰 - 优势
- 成本效益高 - 30-50% 低于不锈钢
- 高强度--卓越的机械性能
- 采用标准程序，易于焊接
- 常见等级：ASTM A105、A350 LF2、A694 F52/F60
最佳应用
不锈钢： 化学加工、食品和饮料、制药、海洋环境、高纯度水系统
碳钢： 石油和天然气管道、蒸汽系统、配水、一般工业管道、非腐蚀性环境
成本比较
碳钢 A105：1x 基准线，10-15 年使用寿命
不锈钢 304：成本 2-3 倍，使用寿命 20-30 年以上
不锈钢 316：成本 3-4 倍，使用寿命 25-40 年以上
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