Beton landasan steel grating (bagian kanan dan kiri) harus rata atau sama tinggi. Bagian bawah steel grating diusahakan menempel secara sempurna dengan landasan bawah.They are often produced with Virtually any mixture of pitch dimensions. Mostly this is 41mm x 100mm or 30mm x 100mm.If you want expanded metallic in other sizes and shapes, Bushwick