Nominal diameter:
DN 20 – DN 600 (DN 20 only PN10/16)
Face-to-face:
EN 558 Series 20
ISO 5752 Series 20
API 609 Table 1
Flange accommodation:
EN 1092 PN 6/10/16
ASME Class 150
AS 4087 PN 16
Flange Surface Design:
EN 1092 Form A/B
ASME RF, FF
Top flange:
EN ISO 5211