
INDUSTRIAL VALVES - FACE-TO-FACE AND CENTRE-TO-FACE DIMENSIONS OF METAL VALVES FOR USE IN FLANGED PIPE SYSTEMS - PN AND CLASS DESIGNATED VALVES
出版:Comite Europeen de Normalisation

专家解读视频
INDUSTRIAL VALVES - FACE-TO-FACE AND CENTRE-TO-FACE DIMENSIONS OF METAL VALVES FOR USE IN FLANGED PIPE SYSTEMS - PN AND CLASS DESIGNATED VALVES
出版:Comite Europeen de Normalisation
专家解读视频