scope:

General

This Standard for wrought copper and wrought copper alloy solder-joint drainage fittings, designed for use with copper drainage tube conforming to ASTM B 306, covers the following:

(a) description

(b) pitch (slope)

(c) abbreviations for end connections

(d) sizes and method of designating openings for reducing fittings

(e) marking

(f) material

(g) dimensions and tolerances

Convention

For the purpose of determining conformance with this Standard, the convention for fixing significant digits where limits (maximum and minimum values) are specified shall be rounding off as defined in ASTM E 29. This requires that an observed or calculated value shall be rounded off to the nearest unit in the last right-hand digit used for expressing the limit. Decimal values and tolerances do not imply a particular method of measurement.

Relevant Units

This Standard states values in both metric and U.S. Customary units. These systems of units are to be regarded separately as standard. Within the text, the U.S. Customary units are shown in parentheses or in separate tables. (Tables showing dimensions in equivalent U.S. Customary units are found in Mandatory Appendix I.) The values stated in each system are not exact equivalents; therefore, it is required that each systemof units be used independently of the other. Combining values from the two systems constitutes nonconformance with the standard.

Quality Systems

Guidelines relating to the product manufacturer's quality system programs are described in Nonmandatory Appendix A.