Steel bar grating has two area type: serrated surface area and smooth surface area. Serrated steel grating is made of serrated steel bars, which can be very low carbon steel bars, aluminum steel bars and stainless steel bars. Untuk informasi harga terbaru anda bisa menghubungi customer service kami, anda juga https://jaredtsqnk.like-blogs.com/29624190/jual-steel-grating-secrets