Brakes making noise when braking 40mph or less

I had same noise befor installing new brake shoes on my 2016 trailer that i bought new. I was hopping bew 4707 TRP brake shoes will fix noise after i take down 3 year olf Meritor brakes shoes but noise is still there. Brake drums are Webb and still good and they are 3 year old. So what could .qke tbis anoing noise. All brake chambers are S cam bushing are fairly new. If i brake harder than letz say 30psi apply pressure noise will be gone. All slack adjusters are adjusted and holding adjustment. Btw i do all these repaires by my self at home

 

Its same squeaking noise like most of dump trucks have haha. Its friction noise. Just dont know why. Maybe i overheated drum or drums and now they making noise on midium braking. Wont do on light or heavy breaking

 

I think its 23k linings i have. Should got 20k since its OTR truck and trailer. Right now im takineverything apart on trailer and installing new TRP drums and gonna try replace anchor pins and bushing since i didnt donit 3 weeka ago whem i installed new TRP brakes on trailer

 

I dont think noise was cousing by siezed up anchor pins. It have to be one of the old drums

 

Yeah they anchor pins and buahing were pita. Anyway. Installed new drums on trl and noise is gonne. Now its time to do on drives. This time im doing btlrake shies and drums at same time

 

And new drive axle brakes and drums are on. Not bad for one afternoon on 95f Missouri weather grrrr