應用規范Usage specification
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1、設計制造:按GB12224-89、GB12228-89、JB/T7746-95
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2、連接端尺寸:(1) 承插孔尺寸接JB1751-75
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3、閥門檢驗和試驗:按GB/T13927-92
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4、材料
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(1)碳鋼按GB699的規定
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(2)不銹鋼按GB1220的規定
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(3)耐熱鋼按GB1221的規定
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1、Design and manufacture conform to standard:GB1224-89,GB1228-89,JB/T7746-95
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2、The connecting dimensions:The dimensions of holls conform to standard JB1751-75
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3、Nspectionand test conform to standard GB/13927-92
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4、Material
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(1).steel casing iron conform to standard GB669
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(2).stainless steel conform to standard GB1220
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(3).steam-resisting steel conform to standard GB1221
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