The machine-stamped loading bars with special slots for accommodating the inserts and the pre-cut inserts themselves are pressed together by a large capacity hydraulic machine, by such way the press-locked grating is formed. The vertically arranged loading bars .and inserts produce a very uniform mesh pattern.
The following are the two major types:
1、Press Locked Grating:Loading bars and inserts with different heights.(Figure 一 shows)
2、Full Grating:loading bars and inserts with the same height.(Figure 二 shows)