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Roughness Requirements. Weld edge prep and other edge surfaces shall be evaluated with the surface roughness guide AWS C4.1-77. Acceptance criteria shall be as follows:
Weld edge prep surfaces for manual and semiautomatic welding processes shall not be rougher than Sample 3 and shall have no gouges deeper than 1.5 mm.
Weld edge prep surfaces for mechanized and automatic welding processes (except SAW) shall not be rougher than Sample 4 and shall have no gouges.
Weld edge prep surfaces for SAW shall not be rougher than Sample 3 and shall have no gouges.
Edges of members not subject to calculated stresses shall not be rougher than Sample 2 and shall have no gouges deeper than 3 mm.
All other edges shall not be rougher than Sample 3 and shall have no gouges deeper than 1.5 mm.
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