If I have a galvanised only bollard, and I use stainless steel ring kits, does this have some effect (chemical) to gal and s/s material ?

Short answer

YES! If galvanised and stainless steel properties are in direct contact and in the presence of an electrolyte (water), galvanic corrosion will occur if they are regularly exposed to an electrolyte. .

Long answer

Galvanic corrosion will happens on galv ONLY in the right condition (for example: WET). It is always a good idea to separate or insulate them. You could apply some coating on the stainless steel thread to minimize the direct contact. Or use a plastic sleeve or some sort to form a barrier between them. But in the bollard case, because the galvanised portion in the product is way larger than stainless steel, it may not be a problem after all.

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Barrier Group is Australia’s leading industrial safety manufacturer and distributor. Barrier Group designs, manufactures and distributes a wide range of industrial and pedestrian safety products such as bollards, fencing and pedestrian barriers, industrial gates, queue control systems, and traffic and car control products like speed humps, wheel stops and traffic delineators. We supply to all Australian cities including Melbourne, Sydney, Brisbane, Adelaide, Perth, Canberra, Hobart and Darwin, and supply to most overseas locations.

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