In many stainless steel welded pipe above there will be some enterprise logo and product information on the above, these marks have a certain difference. Marked in the metal welded pipe surface logo and product information is marked in different ways.

The metal welded pipe surface has the dent, this generally is the related manufacturer enterprise logo. This is a steel seal that is extruded onto the surface of the strip. At the front end of the pipe welding machine, there is a set of steel seal marking axis. The steel seal is installed here. When the steel belt passes by, the steel seal wheel rotates to squeeze the prominent logo on the surface of the steel belt.

There is no dent on the surface of the metal welded pipe, which is the code information of plane spraying. Generally, laser spraying code or spraying is used in the sizing section of the back end of the pipe welding machine. The information is input into the spraying equipment, and the pipe is printed when it passes by. This is easier to understand, it's the same as the pipeline spray mark.