Abstract： ASME B16.22:2018 pdf download.Wrought Copper and Copper Alloy Solder-Joint Pressure Fittings. 9 INSPECTION TOLERANCE 9.1 Convention For determining conformance with this Standard, the convention for fixing significant digits where limits (m...

ASME B16.22:2018 pdf download.Wrought Copper and Copper Alloy Solder-Joint Pressure Fittings.

9 INSPECTION TOLERANCE

9.1 Convention

For determining conformance with this Standard, the convention for fixing significant digits where limits (maximum or minimum values) are specified shall be as defined in ASTM E29. This requires that an observed or calculated value be rounded off to the nearest unit in the last right-hand digit used (or expressing the limit. Decimal values and tolerances do not Imply a particular method of measurement.

9.2 Linear Dimensions

An inspection tolerance, as shown in Table 9.2-1, shall be allowed on center-to-shoulder, center-to-center, center-to-threaded-end, and shoulder-to-threaded-end dimensions on all fittings having internal (C) solder ends, as well as on center-to-solder-end and

solder- end-to-threaded-end dimensions on all fittings having external (FTG) solder ends.

couplinginspection limits for shoulder•to-shoulderand shouldrr.to.rnd dimensions shall be double those shown in Table 9.2-1, except that the minus tolerance applied to dimension L (see Figure 4.1.1) shall not result in a dimension smaller than 1.5 mm (0.06 in.).

The largest opening in the litti pig shall govern the tolerance to be applied to ,ilI openings.

9.3 Ovality of Fitting End (C or FIG)

Maximum ovality of the fitting solder-point end shall not exceed 1% of the maximum diameters shown in Table 3.1.1-1. The average of the maximum and minimum diameters shall be within the dimensions shown in the Table.

9.4 Inside Diameter of Fitting

The minimum cross-sectional area of the inside diameter through the fitting body shall not be less than the theoretical minimum

area defined by diameter Oen Table 3.1.1-1. The out-of-roundness condition of the cross-sectional area shall not exceed the value

shown in Table 3.1.1-1.

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