Concrete Fixing Screws

High-Low Thread
This kind of screw includes a high thread and a low thread. 
The unique qualities of hi-lo thread specifications help minimize the amount of material displaced as the screw is driven into the material,
while also serving to create a stronger grip than would otherwise be possible.

Tensile test
According to different needs, the physical performance can be achieved.
And customized tests can be made for special needs.

DIN, IFI, ISO, ASTM, ASME or according to customer's drawing and samples.
Material: Carbon steel: 1022, 1018
                   Alloy steel: 10B21, 10B33
Gauge: #8 - #14, M4 – M20
Length: 5’’- 12’’, 100mm – 300mm