Stainless Steel Bollards, Commercial Bollards
Stainless steel is much more expensive than bare or even galvanized steel. So these commercial bollards are normally made of Schedule 40 or 80 (or higher) bare or galvanized steel covered by Schedule 10 Stainless covers the next even size up. So, for example, a 4" steel bollard has a 6" stainless steel cover fastened by set screws at the bottom.