Next, as shown in the bolts had to be put away tight gasket, and then another flange smooth on top, each one bolt hole to be aligned. Do not place the note after a smooth touch flange.
Next, the most important is when the bolt according to the angle, the first hand hold the bolt diagonal, until the flange can not shake up, note that at this time to guarantee the correctness of the position of the gasket.
Then, tighten the bolts with a wrench vigorously, until it stops, then the note is facing tight angle, while tight look, or the other side will tilt.
Then, another bolt also installed on the diagonal, the same is also a tight angle, while tight look, head to prevent warping.
Finally, all the bolts are eleven strengthened by diagonal sequence tighten again to prevent loosening, after adding other connections to such protection does not leak fastening flanges.