The Stainless Steel Bollard is available in either Grade of stainless steel. Grade 304 and grade 316 are the two standard grades of stainless steel that are used for all our bollard manufacturing. Grade 304 Stainless Steel is more cost effective and is perfectly adequate for use in most external environments in the UK. Grade 316 Stainless Steel is superior to grade 304, due to being able to handle extreme exposure to corrosive saline elements, therefore Grade 316 Stainless Steel should be chosen for UK coastal locations. It is worth noting that both grades are identical in appearance and will equally tarnish if they are not regularly maintained.