Steel bar grating has two surface kind: serrated floor and clean area. Serrated steel grating is made from serrated steel bars, that may be small carbon steel bars, aluminum steel bars and stainless steel bars. Pemasangan steel grating biasanya dilakukan pada saluran air di area terbuka, seperti jalan raya dan https://jual-grating-galvanis49372.blog5star.com/30141408/considerations-to-know-about-jual-grating-bekas