Blue protective coating applied to pipe weld preps
Blue protective coating applied to pipe weld preps
(OP)
I am looking for the name of the blue protective coating that you apply to weld preps before welding to protect them. I ahve also seen it applied over the heat number stamps on piping as you cannot paint over these. I have googled the name "weld through primer" however the items are really only coming up for mig welding on car parts and they are spray cans. There must be some special type for applying to piping for the power industry. I have seen this used religiously by german piping companies however cannot seem to find the correct name or suppliers. Any help would be appreciated.





RE: Blue protective coating applied to pipe weld preps
RE: Blue protective coating applied to pipe weld preps
TTFN

FAQ731-376: Eng-Tips.com Forum Policies
Need help writing a question or understanding a reply? forum1529: Translation Assistance for Engineers
Of course I can. I can do anything. I can do absolutely anything. I'm an expert!
RE: Blue protective coating applied to pipe weld preps
Treat it like a laquer or enamel "temporary" varnish = OK for a short time to "sort of" delay - not even prevent rust, but only good for a few weeks indoors, 1-2 weeks outdoors. The solvent (remover) will remove the Dykem, but it WILL NOT "clean" the metal underneath adequately for welding. If you are going to weld (GTAW in particular) the prep area, you MUST grind the metal again just moments before welding. Never, of course, try to weld through the Dykem blue.
RE: Blue protective coating applied to pipe weld preps