Dear all ,Thanks for responding.
XL83NL yes,it depends on service,process etc.I just asked to make sure that is there any specific asnwers,just to avoid my confusion.any way thanks.
LittleINCH ,Sorry for not including more details.its Alloy 20 & CS Flange with molten sulphur inside,
Dear Sir,
Do we need to use insulation gaskets in between two dissimilar flanges(CS & Alloy).Drawing says normal gasket.Is there any Code referance for that.Please help.