Historical
ASME B16.12-2009
Cast Iron Threaded Drainage Fittings
This Standard for cast iron threaded drainage fittings covers: (a) size and method of designating openings in reducing fittings (b) marking (c) materials (d) dimensions and tolerances (e) threading (f) ribs (g) coatings (h) face bevel.
American Society of Mechanical Engineers [asme]