MSS SP-43-2008
1. SCOPE
1.1 This Standard Practice provides dimensions,tolerances, and markings for butt-welding fittingsfor low pressure, corrosion resistant applications.
1.2 This Standard Practice covers only fittingsmade for use with Schedule 5S or 10S pipe, for allNPS sizes listed in ASME B36.19M, except that forshort pattern stub ends suitable for use withSchedule 40S are also shown.