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BANGKOK 21 May 2019 04:01

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I have a 3 step pool ladder. The plastic steps are connected to 2 SS tubes on each side of the steps. Holes have been drilled thru the SS tubes and nuts and bolts attach the steps to the SS tubes.

 

The holes drilled thru the SS tubes also allow the salt water into the tubes and the inside is rusting causing rust marks aroung the step anchor points.

 

I want to stop the salt water leaking thru the holes drilled in the tubes where the bolts attach the steps to the tubes.

 

I was thinking of putting silicon around the holes and bolts, hoping to stop the water, but not sure if silicon will permantly stick to the SS.

 

Any ideas?

 

 

 

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Pics20190511_074655.jpg20190511_074709.jpg

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What about Sikaflex 292 to do the job?

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Why is the inside rusting and not the outside? What bolts are you using.

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Why is the inside rusting and not the outside? What bolts are you using.
More pics.

Now not sure what's happening.

Correction: Sika 295 also20190511_121356.jpg20190511_121406.jpg20190511_074709.jpg

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Seems like the tubes are only ss on outside.20190511_122746.jpg

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Posted (edited)

At least two of those washers look dodgy. Maybe try some real SS washers?

Edited by VocalNeal

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Rust leaking out from all holes drilled in ss.

I purchased the steps with other pool stuff from a recommended pool supplier.

I think the ss is not marine grade as well.

Can't trust anyone these days.20190511_124110.jpg20190511_124119.jpg20190511_124547.jpg

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Posted (edited)

No such thing as "marine grade". For salt water you need 316 but likely your steps are 304 as they don't show much. 

 

I'm still going with the dodgy washers. Notice one of the washers/bolts exhibits no sign of corrosion!

 

Are the steps sealed at the top or open? If sealed you can cut some bits of bicycle tube to suite the curve in the treads and coat the support side with silicone and reassemble. This will stop the air leaking out and hence the water getting in. 

Edited by VocalNeal
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Just remembered I have a friend in the UK who is a SS welder. He said it could be the pipe join and is sending me over some stuff.

Thanks for your interest and help.

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You will find most stainless steel in Thailand is 304. 316 is too expensive for the Thai's. 304 will rust especially in and around salt water, over 15 yrs in the pool industry in Thailand & I haven't seen one set without a waterline burn or rust!

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You will find most stainless steel in Thailand is 304. 316 is too expensive for the Thai's. 304 will rust especially in and around salt water, over 15 yrs in the pool industry in Thailand & I haven't seen one set without a waterline burn or rust!
I think you're probably correct, but I would have expected a recommended pool supplier to supply 316 grade when they supplied the stairs. I mean they charged enough and knew it was for a saltwater pool. Not to worry, know better now.

Just been to the local (211 km) shop who made our other SS stair rails and cleaned and polished the one from the pool shop. Came up OK as the pic shows.

The one the SS shop made seems to be preety good still, but I did ask for 316 grade.

Only been 2 years.20190514_125624.jpg

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Even for an "expert" it is impossible to tell grades of new SS apart. I worked in an industrial plant where we didn't allow 304 on site lest it get left lying around and... If the receiving dept. got anything 304 they wouldn't take it off the truck or put it back on and sent the truck on its way.

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AG300 is the silicon I'm going to use on the SS.

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My friend has a large factory that makes comercial Desalination & RO machines. He told me there is a test kit with a liquid (Acid of some sort) that you put on the steel & if it goes green it is 304. 

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