JIS A8604:1985 pdfダウンロード。Submersible Pumps for Construction 1.Scope This Japanese Industrial Standard specifies a temporary and portablesubmersible pump,hereinafter referred to as the “pump”,used for civil-engineering works，architectural works and other construction works，whichis of single suction，single stage,centrifugal type and has nominal diameter (“)of pump of 32 to 250 mm and is coupled directly with a submersible 3-phasesinduction motor with 2 poles,4 poles or 6 poles,or a submersible single phaseinduction motor with 2 poles or 4 poles and rated frequency of 50 Hz or 60 Hz, Note (-) The nominal diameter of pump shail be indicated by a nominal diameter of hose coupling to...