应用规范 Standard 设计与制造 Design and manufacture GB/T12234
连接端尺寸
Connection dinlension 结构长度 Face to face GB/T12221
法兰尺寸 End flanged JB/T79
检验与试验 Inspection and test JB/T9092
材 料
Material 碳钢 Carbon steel GB/T12229 不锈钢 Stain less steel GB/T12230
标志 Symbol GB/T12220
供货 Supply JB/T7928