How much land would be required to weld 8 inch diameter sch,40 pipe open butt?
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Depends on a lot of things.
for tig welding root pass, no land is required.
for stick uphill 6010 electrode, 3/32--1/8" with a 3/32--1/8" gap.
for downhill root with 6010 or 7010, 1/16"--3/32" gap and land works depending on welder preference and procedure.
