Designation: F2947/F2947M − 25Standard Specification for150 mm to 1500 mm [6 in. to 60 in.] Annular CorrugatedPro...
Designation: F2947/F2947M − 21aStandard Specification for150 to 1500 mm [6 to 60 in.] Annular Corrugated Profile-W...