Galvanising questions

[biggles]

Fistly how much does it roughly cost and secondly can something be re-galvanised? I made some gate type things a few years ago and used some second hand steel, some of which was galvanised. I have now perfected these for what they need to do and would like to galvanise them as they wont last long in cow muck. cheers Items are approx. 15ft by 9ft and weigh about 150kg.

 

[Cowcalf]

Fistly how much does it roughly cost and secondly can something be re-galvanised? I made some gate type things a few years ago and used some second hand steel, some of which was galvanised. I have now perfected these for what they need to do and would like to galvanise them as they wont last long in cow muck. cheers Items are approx. 15ft by 9ft and weigh about 150kg.

up here about 400 pounds per ton weighed after treatment, do not think galvanized would affect it,but painted items are more expensive

 

[Warp Land Farmer]

Fistly how much does it roughly cost and secondly can something be re-galvanised? I made some gate type things a few years ago and used some second hand steel, some of which was galvanised. I have now perfected these for what they need to do and would like to galvanise them as they wont last long in cow muck. cheers Items are approx. 15ft by 9ft and weigh about 150kg.

Worksop Galv, Wedge at Chesterfield or Premier all offer a service you could use. There is also a Galv firm in Stoke too but their name escapes me. As it has some existing Galv they will have to soak it in flux to take the existing Galv off then pickel it prior to regalving. It won't be cheap but well worth it if your system has been perfected.

 

[Clive]

Fistly how much does it roughly cost and secondly can something be re-galvanised? I made some gate type things a few years ago and used some second hand steel, some of which was galvanised. I have now perfected these for what they need to do and would like to galvanise them as they wont last long in cow muck. cheers Items are approx. 15ft by 9ft and weigh about 150kg.

sent some stuff ( elec fence corner posts we have made copying the Rappa design) today - min was 15kgs and think that was a £4 /kg- will check tomorrow

3 day turn around, no need for any prep as they acid dip pre dipping

much cheaper than painting if you cost material and time and then doing that every 5 years and much better

 

[biggles]

thanks for the replies guys. tried painting things before and not had much luck with it near cow muck , so im thinking proper job this time.

 

[Forever Fendt]

sent some stuff ( elec fence corner posts we have made copying the Rappa design) today - min was 15kgs and think that was a £4 /kg- will check tomorrow

3 day turn around, no need for any prep as they acid dip pre dipping

much cheaper than painting if you cost material and time and then doing that every 5 years and much better

£196 per ton structural £300 per ton box section frames gates ect +6% enviro charge

 

[hilux]

Wow. That's cheap, talking £600/ton in South Wales for small stuff. When holes have been drilled for pins, how much oversize do u need to allow for galv? (Hope that makes sense)

 

[Forever Fendt]

Wow. That's cheap, talking £600/ton in South Wales for small stuff. When holes have been drilled for pins, how much oversize do u need to allow for galv? (Hope that makes sense)

gate slide bolts and latches 4mm oversize ok we would wire latches ect half open with mig wire if you can

 

[Cowcalf]

£196 per ton structural £300 per ton box section frames gates ect +6% enviro charge

think you must be in heaven all your costs are a lot cheaper we can get

 

[hilux]

Do you not find that a bit loose? What thickness is the galv then? Got some 16 mm holes to drill for hinges. That would mean 20mm hole which seems a bit big.

 

[RWG Contracts]

you can re-galvanise but they don't like doing

 

[Forever Fendt]

Do you not find that a bit loose? What thickness is the galv then? Got some 16 mm holes to drill for hinges. That would mean 20mm hole which seems a bit big.

if you drilling holes for bolts we use 19mm for m16 bolts and 23 mm for m20 bolts that is 1mm extra the 4mm i quoted above is for a sliding bolt ect where both parts are assembled so both bits picking zinc up if that helps

 

[hilux]

I thought I hadn't explained myself properly. Thank you for your help Wish I lived in Derbyshire ,save myself a few££££ on galv.

 

[Paul E]

I find that the galv always blobs around pin holes etc, so usually drill them after, so you get a nice round hole it slides in properly.
Use wedge galvanising too. think last lot was about 60 p /kg IIRC.
Make sure you drill all the internal holes for venting. Once I took some in and saw some that had exploded because some R Sole hadn't drilled it right. Nasty.

 

[joe soapy]

Think gal process takes some strenth out of metal, thats why they dont do it again

 

[RWG Contracts]

Think gal process takes some strenth out of metal, thats why they dont do it again

I thought it was because the fake reacts and causes little explosions

 

[Warp Land Farmer]

Think gal process takes some strenth out of metal, thats why they dont do it again

No, you can't Galv over Galv as it won't take, the Galv process is a fusing of the molten zinc to the metal substrate, no metal sub straight no zinc fusing.

 

[RWG Contracts]

No, you can't Galv over Galv as it won't take, the Galv process is a fusing of the molten zinc to the metal substrate, no metal sub straight no galv fusing.

They can do it but the moan like chuff if you ask them too

 

[Warp Land Farmer]

They can do it but the moan like chuff if you ask them too

Yes to do it they take off the old Galv with a flux soak to expose the metal. They moan as the flux is then contaminated by the stripped zinc rendering the flux less active reducing its useful life before replacement is necessary.

 

[RWG Contracts]

Yes to do it they take off the old Galv with a flux soak to expose the metal. They moan as the flux is then contaminated by the stripped zinc rendering the flux less active reducing its useful life before replacement is necessary.

I see