Welding Hardened Steel

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My buddys neighbor had a 40 foot length of 6 inch pipe he wanted gone,so I decided id cut it into 4 ten foot lengths. I showed up with my rage cold saw and it barely scratched it,I think I wiped out the blade...I ended up cutting it with a cut off wheel in my skill saw...Im thinking about using for a lean too or maybe to hang some pretty hefty gates at my entry,can I mig or stick weld brackets to it? Is there a procedure as far as say preheat the area? Thanks JimEsab Multimaster 260Esab Caddy160IEsab 161 STLESAB powercut 650Esab 220i tigLincoln Precision Tig 225Lincoln IdealArc 250INE SKYLINE 1500Klutch 140iMEASURE TWICE IS FOR MORONS
Reply:Well it was not hardened as you stated I was pipe. Your blade probably just wore out.If you are worried about welding it, a proper preheat would do.Any markings on the pipe?Weld like a "WELDOR", not a wel-"DERR" MillerDynasty700DX,Dynasty350DX4ea,Dynasty200DX,Li  ncolnSW200-2ea.,MillerMatic350P,MillerMatic200w/spoolgun,MKCobraMig260,Lincoln SP-170T,PlasmaCam/Hypertherm1250,HFProTig2ea,MigMax1ea.
Reply:Shovelon ,,,no markings on the pipe,my guess is it may have been for well drillingEsab Multimaster 260Esab Caddy160IEsab 161 STLESAB powercut 650Esab 220i tigLincoln Precision Tig 225Lincoln IdealArc 250INE SKYLINE 1500Klutch 140iMEASURE TWICE IS FOR MORONS
Reply:I have only played around with hardened steel a little. Welded ok but hard as hell on drill bits. If you want to know if its hardened, just take a good sharp bit and try to drill a hole, you will know for sure after that. You dont see too much tube that is hardened but like you said, it may have been for a special purpose.Hobart Handler 210 with SpoolgunHypertherm PM30 PlasmaHTP 221 Tig WelderHF BandsawHF Auto Dark Helmet
Reply:Rather than kill your drill bit us a sharp mill file, that will tell you what you need to know........  Miller Dynasty 350Twenty Six HammersThree Crow BarsBig Rock