Diameter 219 steel pipe open diameter 89 tee horse mouth how to release the sample

Manual release steps: (one section as an example, the rest of the method is the same)

1) First, according to the actual size of the elbow side projection drawn. Including seam lines.

2) Split each closed wireframe figure into separate figures by line. (They can be cropped or redrawn separately.

3) Take a drawing, (set the center line perpendicular) and draw it on a separate sheet of paper, drawing two horizontal lines parallel top and bottom along the height of the drawing and perpendicular to the center line, the length of which

is exactly the circumference of the diameter of the drawing. (Closed rectangle)

4) Make equal parts of the drawing vertically and mark them, then draw these equal parts perpendicularly to the unfolded rectangle just drawn, taking care that the points on the unfolded drawing must correspond to the points on the projected drawing.

5) The diagonal lines on the drawing are divided horizontally into equal parts. And parallel to the unfolded drawing, and correspond to the corresponding points. Connect the intersection points obtained on the unfolded pattern in a round and smooth way, which is the unfolded curve. The denser the equalization, the more accurate the curve will be.

6) Release the amount of nibbles, and plate thickness processing.

Elbow under the material must know the bending radius, thickness, a few sections. Can be out of the picture.