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應用規范Usage specification

1、設計制造：按GB12224-89、GB12228-89、JB/T7746-95

2、連接端尺寸：(1) 承插孔尺寸接JB1751-75

3、閥門檢驗和試驗：按GB/T13927-92

4、材料

(1)碳鋼按GB699的規定

(2)不銹鋼按GB1220的規定

(3)耐熱鋼按GB1221的規定

1、Design and manufacture conform to standard:GB1224-89,GB1228-89,JB/T7746-95

2、The connecting dimensions:The dimensions of holls conform to standard JB1751-75

3、Nspectionand test conform to standard GB/13927-92

4、Material

(1).steel casing iron conform to standard GB669

(2).stainless steel conform to standard GB1220

(3).steam-resisting steel conform to standard GB1221

主要零件材料 Matcrial for main parts
主要零件名稱Parts name	材料Material
閥體、閥蓋Body,bonnet	碳鋼Carbon steel
閥座Seat	不銹鋼Stainless steel
閥板Disc	不銹鋼Stainless steel
閥桿Stem	不銹鋼Stainless steel
墊片Seat	不銹鋼Stainless steel+石墨graphite
填料Packing	柔性石墨Flexible graphite

主要尺寸及重量Main dimensions and weight