First, I want to touch briefly on the metals that are used in the screen printing industry. Pound-wise, the major one would be steel as supplied by both domestic and foreign manufacturers. If you buy steel from the mill, you can specify cold-rolled dry steel. Dry means oil-free. It is relatively clean. You can purchase the steel in sheet or coil form if you have the equipment to do your own sheeting. If ultimate corrosion- resistance is required, you can specify a surface-treated steel - phosphatized zinc grip, paint grip or some other chemical treatment. You may prefer to purchase precoated …