Work Item
ASTM WK89935
Revision of B829-19a Standard Specification for General Requirements for Nickel and Nickel Alloys Seamless Pipe and Tube
Rationale
Extend Minimum Size Range and Associated Tolerances in Table 2 - Permissible Variations for Outside Diameter and Wall Thickness of Seamless Cold-Worked Pipe and Tube. The lower outside diameter limit is currently over 0.400” [10 mm]. Because of this, users of specifications such as ASTM B423 that reference B829 for the tolerances are incorrectly defaulting to the converter size tolerances because the converter size tolerance table contains values for O.D.s = 0.400” [10 mm]. Converter size requirements are to only be required when they are invoked on the purchase order. Adding a line to Table 2 for O.D.s = 0.400” [10 mm] will eliminate this confusion.
Work Item Status
Date Initiated: 03-08-2024
Technical Contact: Keith Hottle