厂家提供A193-B7特氟龙螺栓双头螺柱全牙A194-2H重型螺母 图文详情执行标准Standard材料类别Material TypeGrade公称尺寸Normal Size (in.)长度Length螺纹Screw Thread机械性能 Mechanical Requirementσb(MPa)σ0.2(MPa)δ4(%)ψ(%)硬度HardnessASME/ANSI B 16.5ASME/ANSI B 18.2.1ASME/ANSI B 1.1A 193B7≤2.5按合同规定According to ord