ERW Square Tube Manufacturing Process

1. At the beginning of the ERW square tube manufacturing process, A wooden wedge is used to firmly block one end of the large-diameter rectangular tube, causing it to stand upright (note: the outer leader should be left in place to make pulling out easier). Sifted construction sand that has been fried by fire is then used while it is still hot. Pour the dry sand into the Buchner funnel gradually, tapping the wall thickness as you go until it is unlikely that it will fall off in the tube.

2. ERW square tube manufacturing process needs to draw a detailed drawing of a large-diameter square and rectangular tube by electric welding on the working platform: the radius of the outer circle is 50+diameter/2, the nominal diameter is 50-diameter/2, and the upper switch is welded at the gradual bend and the end. Avoid over- or under-simmering in the sub.

3. Go to the fire and simmer, you can also use a steam torch to bake and simmer. It is very simple to simmer, just gradually simmer it back, but if you are simmering with a gas welding torch, you should pay attention to the electric welding of large-diameter rectangular tubes and simmer them one by one, and be careful to be close to the bottom end of the serving platform. That part must be roasted to the same degree of doneness, or it will simmer flat!

4. In the ERW square tube manufacturing process, if you find that it is under-simmering (insufficient viewing angle) or over-simmering (viewing angle becomes larger), you can use cold water to pour cold water on the inside of the arc or heat both sides and vice versa for calibration.

Note: The sand must be easy to stir-fry because the water in the sand is removed to avoid explosion accidents when the large-diameter square tube is put on fire!