The use of stainless steel pipe or more use of time after a long time, is the need to check it this is a very key step, in order to ensure the quality of stainless steel pipe safety so in the detection of time must ensure the quality of pipe. Here we will simply understand the surface inspection method of stainless steel pipe.

1. If there are sundries on the surface of stainless steel tube, especially when there is dust adhesion, heating will of course affect the oxide scale.

2, the surface of the workpiece such as cold processing attached lubricating oil, in trichloroethylene degreaser, caustic soda solution fully degreased after cleaning with warm water and then heat treatment.

3, the difference of the atmosphere in the stainless steel tube furnace in different parts of the furnace atmosphere, the formation of the oxide scale will also change, which is also the cause of the uneven pickling. So the atmosphere in all parts of the furnace is the same during heating.

4. The object in direct contact with the heating workpiece can only be used after fully drying. But after drying such as placed at room temperature, in the case of high humidity moisture will still condense on the surface of the workpiece. So dry it before use.