EN 1092-1 Flanges
05 (Blank [blind] flanges) 33 (Lapped pipe ends) 11 (Weld-neck flanges) 34 (Weld-neck collars) 12 (Hubbed slip-on flanges for welding) EN 1092-1 PN6 Flanges Note 1: Dimensions N1, N2 and N3 are measured at the intersection of the hub draft angle and the back face of the flange. ... Flange type (typ) as in EN 1092-1 01 (Plate [slip-on] flanges ...