ASTM A194 A194M-20a 高温、高压或高温高压环境用螺栓用碳素钢、合金钢和不锈钢螺母标准规范 ... 上一篇:ASTM E2709-19 Demonstrating Capability to Comply with an Acceptance Procedure下一篇:ASTM D975-20c Standard Specif i cation for Diesel Fuel 1