Press-locked steel bar grating
Hebei Powers Trading Co.,ltd [China] 
PRESS-LOCKED STEEL BAR GRATING
Because this grating is a system of interlocking, perpendicular bars, press-locked steel bar grating provides a smooth clean look ideal for architectural applications such as grilles, dividers and screens.
Press-locked steel bar grating is used in the same structural applications as its welded steel and rectangular aluminum counterparts. Materials include carbon steel, stainless steel or aluminum. Spacings range from 7/16" to 1-3/16".
Press-Locked Steel Bar Grating is often desirable because of its clean, smooth look and excellent lateral support. It exhibits the same strength, long life and openness as welded grating, although it is not recommended for rolling loads. Instead of welding the joints, however, tremendous hydraulic pressure is used to bond the two close-tolerance slotted bars together. Permanent locking is achieved by forcing the deep cross bar into the notched bearing bar.
