Piping Material Specification 12LB0M01, Class 175, Ductile Iron, Cement-Mortar Lined, Fire-Water (UL/FM Approved) (Underground)
standard by Process Industry Practices, 05/01/2007

Piping Material Specification 12LB0M01, Class 175, Ductile Iron, Cement-Mortar Lined, Fire-Water (UL/FM Approved) (Underground)
standard by Process Industry Practices, 02/01/2001

Piping Material Specification 12LB0M01, Class 175, Ductile Iron, Cement-Mortar Lined, Fire-Water (UL/FM Approved) (Underground) [Complete Revision]
standard by Process Industry Practices, 05/01/2017