Itu digunakan untuk spot yang sering dilalui air. Gunanya agar tidak mudah tergelincir jika dilalui orang atau kendaraan.Force-locked bar grating, or swaged grating, is exactly where steel rods are compelled through and locked in load bars. Riveted bar grating is in which the load bars are riveted on the cross bars. There are vast styles of trade n… Read More