B-1.1, r. 2 - Construction Code

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8.107. Flanged joints for aboveground piping must be provided in welded systems at intervals that will facilitate dismantling and avoid subsequent in-place cutting and welding operations.
Flanged joints must be made with forged or cast steel flanges designed, manufactured and installed in compliance with ASME Standard B16.5 Pipe Flanges and Flanged Fittings: NPS ½ through NPS 24 Metric/Inch Standard, published by the American Society of Mechanical Engineers; bronze flanges may be used on copper or brass piping not exceeding 50 mm in diameter.
O.C. 220-2007, s. 1; O.C. 87-2018, s. 40.
8.107. Flanged joints for aboveground piping must be provided in welded systems at intervals that will facilitate dismantling and avoid subsequent in-place cutting and welding operations.
Flanged joints must be made with forged or cast steel flanges designed, manufactured and installed in compliance with ASME Standard B16.5 Pipe Flanges and Flanged Fittings, published by the American Society of Mechanical Engineers; bronze flanges may be used on copper or brass piping not exceeding 50 mm in diameter.
O.C. 220-2007, s. 1.