What is the dark surface on DOM tubing?
What is the dark surface on DOM tubing?
(OP)
Is the dark surface an oxide? We just got some DOM tubing in from our steel supplier and about half the pieces look like the dark surface (whatever it is) was cleaned off or removed. I want to make sure I know what was done.





RE: What is the dark surface on DOM tubing?
RE: What is the dark surface on DOM tubing?
RE: What is the dark surface on DOM tubing?
RE: What is the dark surface on DOM tubing?
RE: What is the dark surface on DOM tubing?
Looks like someone then has cleaned the OD of these tubes. That's not a problem. I just get alarmed when the material looks different than what we've been getting.
RE: What is the dark surface on DOM tubing?