root pass

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root pass [′rüt ‚pas]

(metallurgy)

The first weld bead deposited in a multiple pass weld. Also known as root sealer bead.

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No references found			In oil and gas pipes, the quality of the root pass of a weld is critical to the structural integrity of the girth weld. New tool ensures right welds by Oil & Gas News Jepperson explains that welding procedures specified a root pass with solid wire (MIG process) and then subsequent passes with flux-cored wire. Quality welds let thrill seekers go over the edge: as you're hurtling ... by Modern Applications News 0402-20 GTAW Root Pass Welding of 6% Molydenum Austenitic Stainless Steel Pipe--Open Root Joint with Hand-fed Filler. Corrosion and materials help for your pulp and paper mill by Solutions - for People, Processes and Paper			Root Collar root component root crack root crop Root Crops Root Cutter root directory root domain root face root field root fillet root hair Root Hairs root key root knot root locus plot root mean square root mode root node root nodule Root Normal Form root of joint root of unity root of weld root opening root pass root penetration root planing root planning Root Pressure root rot root sealer bead root segment root server root sheath Root Sucker Plants root symbol root task root test root version root vertex root zone Root, Elihu Root, Elisha King Root, George Frederick Root, Gladys Towles Root, John Wellborn Root, Waverley root-balled Root-Knot Nematode Root-Knot Nematodes			root of joint root of lung root of nail root of penis Root of Sum of Squares Root of the Holy Ghost Root of the Holy Ghost Root of the Holy Ghost Root of the lung root of the problem root of tongue root of tooth Root of unity Root of unity root of weld root on root on root on root on root opening root out root out root out root out root out root out of root pain root pain root pain root pain root pass root penetration root perforation root perforation root perforation root perforation root planing root planing root planing root planing root planning Root Port Root position root pressure root pressure Root Protection Area Root Raised Cosine Filter Root Raised-Cosine root ratio root ratio root ratio root ratio root ratio root reptile root resection root resection root resection root resection Root resorption Root resorption Root resorption

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