diff --git a/business/src/main/java/com/fizz/business/controller/SteelGradeInfoController.java b/business/src/main/java/com/fizz/business/controller/SteelGradeInfoController.java
index 6c70f4b..0b5b1fd 100644
--- a/business/src/main/java/com/fizz/business/controller/SteelGradeInfoController.java
+++ b/business/src/main/java/com/fizz/business/controller/SteelGradeInfoController.java
@@ -30,57 +30,45 @@ public class SteelGradeInfoController {
     @Operation(summary = "查询钢种列表")
     public R<List<StdAlloyVO>> list(@RequestParam(value = "keyword", required = false) String keyword) {
 
-        // 使用 LambdaQueryWrapper 查询 StdAlloy 表中的数据，支持按名称/编号模糊查询
+        // 严格按 cgldb.sql：查询 std_alloy(GRADEID, NAME)
         LambdaQueryWrapper<StdAlloy> queryWrapper = new LambdaQueryWrapper<>();
-        queryWrapper.select(StdAlloy::getGradeid, StdAlloy::getName); // 只查询 gradeId 和 name 字段
+        queryWrapper.select(StdAlloy::getGradeid, StdAlloy::getName);
         if (StringUtils.isNotBlank(keyword)) {
             queryWrapper.like(StdAlloy::getName, keyword)
                     .or()
                     .like(StdAlloy::getGradeid, keyword);
         }
-        queryWrapper.orderByAsc(StdAlloy::getName); // 按 name 排序
+        queryWrapper.orderByAsc(StdAlloy::getName);
 
-        // 查询 StdAlloy 数据
         List<StdAlloy> stdAlloyList = steelGradeInfoService.list(queryWrapper);
 
-        // 使用 BeanUtils 将 StdAlloy 对象的字段映射到 StdAlloyVO
         List<StdAlloyVO> stdAlloyVOList = new ArrayList<>();
         for (StdAlloy stdAlloy : stdAlloyList) {
             StdAlloyVO stdAlloyVO = new StdAlloyVO();
-            BeanUtils.copyProperties(stdAlloy, stdAlloyVO); // 将 StdAlloy 属性复制到 StdAlloyVO
+            BeanUtils.copyProperties(stdAlloy, stdAlloyVO);
             stdAlloyVOList.add(stdAlloyVO);
         }
 
-        // 返回结果
         return R.ok(stdAlloyVOList);
     }
 
     @GetMapping("/info")
     @Operation(summary ="询单个钢种详情")
     public R<StdAlloy> getSteelGradeInfo(@RequestParam Integer gradeid) {
-
-        // 使用 LambdaQueryWrapper 查询 StdAlloy 表中的数据
-        LambdaQueryWrapper<StdAlloy> queryWrapper = new LambdaQueryWrapper<>();
-        queryWrapper.eq(StdAlloy::getGradeid, gradeid); // 只查询 gradeId 和 name 字段
-
-        // 查询 StdAlloy 数据
-        StdAlloy stdAlloyList = steelGradeInfoService.getById(gradeid);
-
-        // 返回结果
-        return R.ok(stdAlloyList);
+        return R.ok(steelGradeInfoService.getById(gradeid));
     }
 
 
     @PostMapping("/add")
     @Operation(summary ="新增")
-    public R<Boolean> add(@RequestBody StdAlloy steelGradeInfo) {
-        return R.ok(steelGradeInfoService.save(steelGradeInfo));
+    public R<Boolean> add(@RequestBody StdAlloy stdAlloy) {
+        return R.ok(steelGradeInfoService.save(stdAlloy));
     }
 
     @PutMapping("/update")
     @Operation(summary ="更新")
-    public R<Boolean> update(@RequestBody StdAlloy steelGradeInfo) {
-        return R.ok(steelGradeInfoService.updateById(steelGradeInfo));
+    public R<Boolean> update(@RequestBody StdAlloy stdAlloy) {
+        return R.ok(steelGradeInfoService.updateById(stdAlloy));
     }
 
     @Operation(summary ="删除")
diff --git a/business/src/main/java/com/fizz/business/domain/StdAlloy.java b/business/src/main/java/com/fizz/business/domain/StdAlloy.java
index a8c259b..d79c4f7 100644
--- a/business/src/main/java/com/fizz/business/domain/StdAlloy.java
+++ b/business/src/main/java/com/fizz/business/domain/StdAlloy.java
@@ -2,10 +2,12 @@ package com.fizz.business.domain;
 
 import com.baomidou.mybatisplus.annotation.TableField;
 import com.baomidou.mybatisplus.annotation.TableId;
+import com.baomidou.mybatisplus.annotation.TableName;
 import lombok.Data;
 import java.time.LocalDateTime;
 
 @Data
+@TableName("std_alloy")
 public class StdAlloy {
 
     @TableId("GRADEID")
diff --git a/business/src/main/java/com/fizz/business/mapper/SteelGradeInfoMapper.java b/business/src/main/java/com/fizz/business/mapper/SteelGradeInfoMapper.java
index 1bf6504..7690059 100644
--- a/business/src/main/java/com/fizz/business/mapper/SteelGradeInfoMapper.java
+++ b/business/src/main/java/com/fizz/business/mapper/SteelGradeInfoMapper.java
@@ -3,7 +3,6 @@ package com.fizz.business.mapper;
 
 import com.baomidou.mybatisplus.core.mapper.BaseMapper;
 import com.fizz.business.domain.StdAlloy;
-import com.fizz.business.domain.SteelGradeInfo;
 import org.apache.ibatis.annotations.Mapper;
 
 @Mapper
diff --git a/business/src/main/java/com/fizz/business/service/SteelGradeInfoService.java b/business/src/main/java/com/fizz/business/service/SteelGradeInfoService.java
index 0e8b403..1821ac6 100644
--- a/business/src/main/java/com/fizz/business/service/SteelGradeInfoService.java
+++ b/business/src/main/java/com/fizz/business/service/SteelGradeInfoService.java
@@ -2,7 +2,6 @@ package com.fizz.business.service;
 
 import com.baomidou.mybatisplus.extension.service.IService;
 import com.fizz.business.domain.StdAlloy;
-import com.fizz.business.domain.SteelGradeInfo;
 
 public interface SteelGradeInfoService extends IService<StdAlloy> {
 }
\ No newline at end of file