Arched steel fiber with Korean and US patents is a very special product.
Korean patent: #10-1596246
USA patent: #15/10,305
Total length(Lt) and geometry improves performance by more than 20% over end-hooked steel fibers.
① Long length(Lt)
② Long resistance(C)
①+② Increased pull energy(Ep)
③ SFRC performance
Aspect ration = Length(L) / Diameter(D)
In general, the larger the aspect ratio, the better the performance.