SPIRAL DUCT & FITTINGS - Eastern Sheet Metal
Hot-pressed elbow is a kind of elbow which is made by using professional equipment after heating the pipe, then cutting and heating it to the critical temperature. After holding for a period of time, the elbow is put into the quenching agent quickly, so that its temperature drops sharply, and the elbow is made by the method of rapid cooling which is faster than the critical cooling speed.
Get Price