Today, I went to our production workshop for the industrial tubular heaters, and found that the korea customer's 300pcs triangle vacuum difusion pump heater are almost ready. The triangle vacuum difusion pump heater is 240V 2000W, and the pipe material is incoloy840. with 2 meters nickel wire. This heater was designed to be flat pipe surface in order to increase the heating contact area, this can improve the heating transfer effiency, and also increase the life service time. we made mould for the production of the heater because the bending directly is different from the normal type. and by now, we have sent to them for 20000pcs, they are very happy with our quality and price.