correct, its like metal is slowing being eating(dissolving) away. this duct is about 80ft in the air, if this continues duct will fall. top picture has about 1" gap. I have been told from manufacture that fabricated duct was stiffing ring is acting like a heat sink and condentsation is building...
Good afternoon, I need some assistance with metals, we are a wood conveying facility and sending wood chips through a 88" duct (metal .250 thick) temps range from 140-180 F, duct supplier used stiffing rings about every 4'. problem is duct looks as if its being melted from outside in. I am...
