stainless steel is extremely durable, structurally strong and is highly resistant to corrosion, especially when electro-polished. The specification of our Wedge Wire Grate as follows: Wedge wire: 3x4.2mm, 3.2mm pitch; Support wire: 3x6mm, 25mm pitch; Frame: 22.8x5mm; Surface treatment: polished. We can also custom it according to customers’ requirement.