Cast in many industrial products have long been used mortgages (anchor) bolts with special heads, such that not only pull, but rotate can’t.
With the advent of high strength composite self-hardening compositions that bolt you can “lay” in the body of the finished product (plastic or metal) and making it pre-nest, and then simonaityte.
Recommend to read
ANCHOR — FROM ANCIENT TIMES TO THE PRESENT DAY
Oddly enough, but we tend to think of Ancient Rus agrarian power, traded mainly salt, hemp, wax, fur goods, linen. Meanwhile our ancestors were taken abroad and iron, and iron, famous...
THREE-PHASE — IN HOME NETWORK
"For the treatment of infield has decided to replace the tiller internal combustion engine electric. Already got polutoraterabaytny the motor. But it is three phase. How to connect to...
