diff --git a/SGGL/FineUIPro.Web/HJGL/BaseInfo/PipingClassIn.aspx.cs b/SGGL/FineUIPro.Web/HJGL/BaseInfo/PipingClassIn.aspx.cs
index b29ad88b..3add6128 100644
--- a/SGGL/FineUIPro.Web/HJGL/BaseInfo/PipingClassIn.aspx.cs
+++ b/SGGL/FineUIPro.Web/HJGL/BaseInfo/PipingClassIn.aspx.cs
@@ -419,8 +419,8 @@ namespace FineUIPro.Web.HJGL.BaseInfo
                 int a = PipingClassList.Count();
                 for (int i = 0; i < a; i++)
                 {
-                    var isExistPipingClassCode = Funs.DB.Base_PipingClass.FirstOrDefault(x => (x.PipingClassId != PipingClassList[i].PipingClassId || (PipingClassList[i].PipingClassId == null && x.PipingClassId != null)) && x.PipingClassCode == PipingClassList[i].PipingClassCode);
-                    var isExistPipingClassName = Funs.DB.Base_PipingClass.FirstOrDefault(x => (x.PipingClassId != PipingClassList[i].PipingClassId || (PipingClassList[i].PipingClassId == null && x.PipingClassId != null)) && x.PipingClassName == PipingClassList[i].PipingClassName);
+                    var isExistPipingClassCode = Funs.DB.Base_PipingClass.FirstOrDefault(x => (x.PipingClassId == PipingClassList[i].PipingClassId || (PipingClassList[i].PipingClassId == null && x.PipingClassId != null)) && x.PipingClassCode == PipingClassList[i].PipingClassCode);
+                    var isExistPipingClassName = Funs.DB.Base_PipingClass.FirstOrDefault(x => (x.PipingClassId == PipingClassList[i].PipingClassId || (PipingClassList[i].PipingClassId == null && x.PipingClassId != null)) && x.PipingClassName == PipingClassList[i].PipingClassName);
                     if (isExistPipingClassCode != null)
                     {
                         ShowNotify("存在相同批次的管道等级代号，请修正后重新提交！", MessageBoxIcon.Warning);