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Description / Abstract:
General
This Standard covers threaded malleable iron unions, Classes
150, 250, and 300. It also contains provisions for using steel for
NPS 1⁄8 unions. This Standard includes
(a) design
(b) pressure–temperature ratings
(c) size
(d) marking
(e) materials
(f) joints and seats
(g) threads
(h) hydrostatic strength
(i) tensile strength
(j) air pressure test
(k) sampling
(l) coatings
(m) dimensions
Mandatory Appendix I provides tables in U.S. Customary
units.