Method Of Making Glass Tube

First of all, we need to put glass tubes in the steel tube, and then put a heating body in the glass tube. This heating body has high frequency induction, and the glass tube can be heated to a certain temperature, which is the softening of the glass tube. Because the glass tube is inside the steel pipe, the temperature of the inner surface of the steel pipe can be as high as nearly 700 degrees, and the temperature of the outer surface is less than 300 degrees.

When the glass tube is heated and softened, it moves forward relative to the heating body. As it moves, air is pumped into the tube, which needs to be compressed so that the softened glass sticks to the inner wall of the steel tube. If you want to reduce the cost of this production method, but also want to increase the speed of glass tube production, you can control the heating temperature of the inner surface of the steel tube, to control the thermal impact of the steel tube, so that the steel tube to maintain the best strength.