Asme B16.9 48" Wrought Carbon Steel Pipe Elbow SCH40

For purposes of deter mining proof testing requirements of section 9, the mate rials are grouped by similar propertie. Fittings made from block forgings may only be supplied subject to agreement between the manufacturer and purchaser. Such fittings need not meet the requirements of section 7.

For applications where fatigueloading is a concern, required minimum dimensions shall be furnished by the purchaser. Fittings may be made to special dimensions, sizes, shapes, and tolerances by agreement between the manufacturer and the purchaser. This Standard states values in both SI (Metric) and U.S.Customary units. These systems of units are to be regarded separately as standard.

Within the text and tables, the U.S. Customary units are shown in parentheses. The values statedin each systemare not exact equivalents;therefore, it is required that each system of units be usedindependently of the other. Combining values from the two systems constitutes nonconformance with the Standard.