Is it Friction Weld?No. Nothing like friction. There is no fusion line. The profile is smooth. Note – friction grain flow is 90 degrees. Grain flow of solid-state is laminar, and smooth.By FuseRing|2022-06-03T11:05:50-04:00May 30th, 2022|Share This Post With Others!FacebookTwitterLinkedInWhatsAppPinterestEmail