《鐵制、銅制和不銹鋼制螺紋連接閥門》(GB/T8464-2023)【全文附高清無水印PDF+DOC/Word版下載】英文標準名稱:Cast iron,copper and stainless steel valves with screwed connections簡介:本文件規定了鐵制、銅制和不銹鋼制螺紋連接的閘閥、