Welding galvanized steel fittings on steel pipes
Welding galvanized steel fittings on steel pipes
(OP)
I know that welding galvanized fitting with steel fitting is not recommended , can you tell me why ?
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Welding galvanized steel fittings on steel pipes
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RE: Welding galvanized steel fittings on steel pipes
BigInch
-born in the trenches.
http://virtualpipeline.spaces.msn.com
RE: Welding galvanized steel fittings on steel pipes
The main risk in doing this, is the gas that is created when the zink is burned during the welding process. This gas can be life threatening.
The zink coating needs to be ground off to create a weld lane. It would also be wise to have an air flow that blow any stray fumes away from the welder.
RE: Welding galvanized steel fittings on steel pipes
Both the OD and ID need to be ground to completely remove zinc before welding.
Be aware that a lot of galvanized fittings are ductile iron rather than carbon steel...
RE: Welding galvanized steel fittings on steel pipes
The whole idea of welding threaded components kind of bothers me.
RE: Welding galvanized steel fittings on steel pipes
RE: Welding galvanized steel fittings on steel pipes
RE: Welding galvanized steel fittings on steel pipes
"The subject can then appear to be more susceptible to the onset of this condition on Mondays or on weekdays following a holiday than they are on other days."
What does that NOT include?
BigInch
-born in the trenches.
http://virtualpipeline.spaces.msn.com
RE: Welding galvanized steel fittings on steel pipes
RE: Welding galvanized steel fittings on steel pipes
Of course, the onset of 'metal fever' is more likely on Monday. Tues-Friday, the welder has a continuing case which ameliorates over the weekend.
That page is obsolete. In 1999, the subject list was broadened to: Antimony, Arsenic, Barium, Beryllium Cadmium, Chromium, Cobalt, Copper, Lead, Manganese, Mercury, Nickel, Ozone, Selenium, Silver, Vanadium.
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See current standard Ventilation and protection in welding, cutting and heating. - 1915.51 http:/
Also, in 2006, OSHA issued new, much lower permissible exposure limits (PELs) for hexavalent chromium (which is created in arcs/plasmas from stainless steel, chromium plating & other Cr-containing materials.
http://www.osha.gov/SLTC/hexavalentchromium/
http:/