ASTM A928 填充金属电熔焊铁素体/奥氏体双相不锈钢管 Standard Specification for Ferritic/Austenitic (Duplex) Stainless Steel Pipe Electric Fusion Welded with Addition of Filler Metal - 宽诚贸易 | 让紧固件、轴承、连接件、泵阀、气动液压元件、软管、钢管、管件、密封件、动力传动容易买，轻松卖！