The removal of the "nail seal" can be handled from two aspects: hole type and adjustment:
From the perspective of hole design, without affecting the overall deformation effect, the hole type can be boldly removed, which is not only harmless to the molding, but also never scratches the back cover.
From the adjustment point of view, if there is indentation Stainless Steel Seamless Pipe under the stainless steel welded pipe blank of the vertical roller, the vertical roller is lowered; If there are indentation marks on both sides of the flat roller stainless steel welded pipe blank, tighten the vertical roller or loosen the flat roller appropriately before the flat roller. If there is indentation on one side of the stainless steel welded pipe blank after the flat roller is unloaded, the rolled line of the vertical roll in front of the flat roll should be corrected.

Stainless steel plate purchase choice Stainless Steel Industrial Pipe manufacturers how to do? We should be able to have a certain understanding of this problem, you can know how to do it when choosing a manufacturer, it is generally recommended to spend more time on the choice of manufacturers, in fact, we know more about the relevant information of some manufacturers, for multiple manufacturers to compare, you can choose a better manufacturer, you do not need to worry too much about the choice of manufacturers, you can patiently spend some time in the choice of manufacturers.

The surface of stainless steel welded pipe is a common defect of welded stainless steel welded pipe, which is specifically manifested as compression, indentation and scratches.
Scratching: Mainly refers to the failure of the roller that does not move in operation or has a large relative speed difference with the stainless steel welded pipe blank, and its characteristics are related to the speed difference. For example, vertical roller bearings are damaged, the rotation of vertical rollers is blocked, and the surface of stainless steel welded pipes is scratched; The linear velocity of the rolling diameter position on the hole is different from the linear velocity of other parts. Compared with the moving stainless steel welded pipe blank, there is a certain relative movement between the positions with a large speed difference, and when the friction reaches a certain level, the surface of the stainless steel welded pipe blank will be scratched. The former is characterized by a vertical line on the surface of the stainless steel welded pipe; The latter is characterized by an irregular curved surface of stainless steel welded pipe, similar to "nail printing" "Nail printing usually appears on both sides, bottoms and middle positions of stainless steel welded pipe blanks. The edge and bottom of the stainless steel welded pipe blank correspond to the position of the speed difference of the forming 304 Stainless Steel Pipe vertical roller, and the middle corresponds to the position of the speed difference of the forming flat roller hole.