My 2006 Honda Accord sounds like the front brakes Are grinding at low speed.

The brake pedal does not vibrate, the car does not pull to either side. There is no grinding during higher speed braking. The front brakes were changed at 70k. I have recently inspected the frictio surfaces and all appear to be in spec. I bled the brakes recently to ensure no air was in the system but hey still sound like they are grinding.