7.5X52-- 212 cement nail 



 Cement screw for a fixed window frame expansion screws, quality first, reputation on the idea of ??winning the trust of our customers. 



 The product with the C1022 wire production, after carburizing heat treatment, surface hardness min450HV0.3, core hardness 270-390HV10, notch depth (EF) X0.42, the minimum plating thickness 3um. 



 Supply two kinds of cement screw head type screws in various lengths in the cement. 7 .. 5 cement nail length from 42-212MM, head T-30 and T-25 two sizes