Home / Standards / GB 5661-85 GB 5661-85 Dimensions of cavities for mechanical seals and soft packings in axial suction centrifugal pumps 轴向吸入离心泵机械密封和软填料用的空腔尺寸 Standard Type GB ICS N/A CCS N/A Status N/A Issue Date N/A Implementation N/A Responsible Dept N/A Drafting Unit N/A