A new method of detecting the inner surface and inner diameter of the steel tube is introduced.

提出一种新的检测钢管内表面质量和内直径的方法。

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Test was taken for comparing the method of test tube and spectrophotometry, their detecting result were almost same, relative error was within 10%. It can be used for in-site detect.

作了测试管法与分光光度法的对比测定，表明两种方法测定结果基本相同，相对误差在10%以内，满足了现场监测需要。

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Test was taken for comparing the method of test tube and spectrophotometry, their detecting result were almost same, relative error was within 10%. It can be used for in-site detect.

作了测试管法与分光光度法的对比测定，表明两种方法测定结果基本相同，相对误差在10%以内，满足了现场监测需要。

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