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Thanks once again Luis,do we have any idea how long before this corrosion starts to happen?

Thanks Luis,the SS spec is 304L

if the line is insulated there will be a primer coat and if the line is not insulated there will be 2 coats plus a coded colour.Do you need to know the thickness or quality of paint?.

Thanks MJ but problem is we have bought stainless steel socket weld valves for carbonsteel piping.I heard in the distant past of weld electrodes for welding carbon steel pipe to stainless steel but dont know if the practice is acceptable,the integrity of the weld etc.

Can anyone tell me if there are any repercussions when welding stainless steel pipe to carbon steel pipe.I assume there exists transition weld electrodes but not sure if this practice can be applied to design of a chemical plant due to the ordering of wrong material.

I need to know the viscocity of biodiesel at below zero temperatures.Can someone help.Thanks

Could someone advise me on where I can find a typical steam tracing specification for pipework in a biosiesel plant.Thanks

Thanks,being as we are at the basic engineering phase a back of fag packet calc would suffice Can you help pleasqe.

Info required on how to calculate expansion loops in a steam line on a pipe rack and also determining forces due to pipe expansion on anchor bay etc.

Gents and Ladies Where can I find a Hydrostatic Test and flushing procedure for piping systems as per B31.3. Thanks

My current project is a biodiesel plant for Rotterdam.We will transport the fuel by road tanker by using bottom loading arms in a tanker bay and my problem is I dont have any details of the road tankers which will be used ie length,position of connecting nozzle etc.I dont know if I am on the...

sorry I forgot to say it is a 12" line.

Could someone advise me on a typical pipe specification for a steam line 14 barg operating at 210°C(slightly superheated). Thanks

Thanks again.The firewater pipeline is an underground system with hydrants all over the site.My tie-in point for the potable water line in question is in fact running from a neigbouring site and is not near the firewater line.I have read several pipespecs from previous projects and they have...

I need to select a suitable gasket to be used in a pipeline transporting either soya/rapeseed oil or biodiesel.Any advice please.

Thanks for the input.The pipe trench is existing and has several existing pipes in it,it is an open trench about 1 metre below ground level.I looked into the possibilities of burying the line but its just not feasible as it runs through an existing site for at least 800 meters.You make an...

My project has carbon steel product lines in which soya/rapeseed oil and biodiesel are being pumped at ambient temp and not more than 10 barg.I need flanged valves ASA 150# some manual and some motor operated they are 6" and 10" diameter lines.Will I use butterfly or gate or other for this...

Thanks for your help on this matter.The more complete picture is that I am building a biodiesel plant which requires potable water for process purposes and drinking also.My tie in point is a 3" line almost one kilometer from the plant so my new 3" line will run above ground in a pipe trench to...

Thanks for the answer.The line will be winterized(electrical tracing and insulated)can I still use PVC in this case?

There seems to be a differing of opinion as to whether pipe material should be galvanized carbon steel or stainless steel.Any ideas please.