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Powder coating square tubing

10K views 15 replies 13 participants last post by  Dualie  
#1 ·
I live in florida and this is a square tube ramp like for the boating industry.

Does powder coating only get the outside of the square tubing?

Wouldn't this mean the tubes will rust from the outside? If so, I will change my design to angle iron so the powder will reach every part of the material.


Has anybody else came across this problem before?