ASME B16.39-2009

Malleable Iron Threaded Pipe Unions: ASME B16.39-2009 Classes 150, 250, and 300 American Society of Mechanical Engineers / 09-Oct-2009 / 18 pages SCOPE
1.1 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.
1.2 References
Standards and specifications adopted by reference in this Standard are shown in Mandatory Appendix II,which is part of this Standard. It is not considered practical to identify the specific edition of each referenced standard and specification in the text, when referenced.Instead, the specific editions of the referenced standards and specifications are listed in Mandatory Appendix II.
1.3 Quality Systems
Nonmandatory requirements relating to the ASME B16.39-2009 fitting manufacturer’s quality system programs are described in Nonmandatory Appendix A.