The unique welding process that incorporates proprietary technique and uses outerand inner synchronized tugsten arcs enveloped in an atmosphere of inert gas toproduce a double butt joint weld in wall thicknesses through one-half inch withoutthe use of filler metal. The Syncro-weld process then forges the weld effecting arefinement of grain resulting in a smooth weld surface.
Why is SYNCRO-WELD Unique?
INCREASED FATIGUE STRENGTH - Smooth weld surfaces both O.D. and I.D. by use of compression rollers, eliminates all objectionable stress raisers.
ELIMINATION OF ROOT BEAD - The critical root bead weld area is completely eliminated by the Syncro-Weld process where a complete blend of top and bottom weld is effected without any joint bevels.
The companion process to Syncro-Weld employs the same double welding technique,but instead of roll compressing the weld beads, cold reduction is accomplishedby manufacturing the pipe over-sized and subsequently reducing it to desiredsize in tapered die swagging presses, thereby offering all the features ofSyncro-Weld pipe. All Dyna-Weld products meet ASTM A-312 fully without depositof filler metal on wall up and including 2.00" thick.
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