How to fix the middle of the light steel keel to the roof and the ground, the keel has a joint?
First with the expansion bolts fixed heaven and earth keel and roof and the ground, the middle with a vertical keel; if the layer is too high, then the keel will have joints, of course, have special connections.
If it is looking for decoration workers to do, then they are professional. Under normal circumstances is the use of surge tube and self-tapping screws fixed. (There are other ways). Keel specifications a lot, generally long after the increase in joints. What specifications of the keel with what specifications of the joints. Not common.
Keel fixation requires the use of expansion bolts fixed, but now many practices are directly linked with steel nails, so more convenient, the effect is almost, of course, is not good with expansion bolts. Top and bottom with 75 days keel. Then there are 75 vertical keels.
