[MW:1726] Fw: how to weld ASTM material A335

--- On Sun, 3/8/09, Ahmed Eissa <ahmedeissa16@yahoo.com> wrote: From: Ahmed Eissa <ahmedeissa16@yahoo.com> Subject: how to weld astem material A335 To: materials-welding@googlegroups.com Date: Sunday, March 8, 2009, 5:35 PM dear,all   we are going to weld material A335 P no 9 ,11  and 5 Seamless Ferritic Alloy-Steel Pipe for High-Temperature services. can any one help how to do preheat and post weld heat treatment. if possible i will be glad if any one share a premade WPS and PQR to use as guide   thanks in a dvance

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