Mechanical · IMC 2021 §506.3.2
Grease Duct Joints, Seams and Penetrations
Details: grease duct joints, seams and penetrations get a continuous liquid-tight weld or braze on the external surface; listed seals, smooth internal welds and UL 1978 ducts are excepted.. Referenced to IMC 2021 §506.3.2.
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