Defects

A Split Seam (also called Clam Shell) is a serious visual seam defect. Possible causes for Split Seam / Clam

Possible causes of Low Free Space: Low (Tight) Seam Thickness Tight 2nd operation roll

Possible causes of High Free Space: High (Loose) Seam Thickness Loose 2nd operation roll Sprung Seam

More about Seam Gap. Possible causes of High Seam Gap: Loose 2nd operation roll High 2nd operation roll High 1st operation

Possible causes of Deep Countersink: Worn 1st operation roll profile High 1st operation roll Worn 2nd operation roll profile High 2nd operation

Seam Length (AKA Seam Height or Seam Width) is a critical external seam measurement. When too short, it means that there

Possible causes of High / Long Seam Length / Seam Height: 1st operation roll setup is too loose 2nd operation roll setup is

Possible causes of high BH Butting: Long Body Hook Short Seam Length

Possible causes of low (short) BH Butting: Short Body Hook Long Seam length