About jual plat timah hitam surabaya
Polos (Basic) : jenis steel grating ini berupa plat kotak – kotak yang polos tanpa ada bagian yang bergerigi kecuali virkannya.Compared to flat surfaces, even sleek steel gratings, serrated gratings make workers or pedestrians safer. Even in rain or substantial winds the serration gives a foothold for sneakers, and serrated steel grating is usual