DN450 (18" NB) ASA150 RF BOSSED SLIP ON FLANGE SS 304

Flange outside diameter: 635.0mm (O)
Flange thickness: 39.6mm (C)
Flange hub height: 68.3mm (Y)
Pitch Circle Diameter (PCD): 577.8mm (K)
Raised Face Height: 1.5mm (RF)
Bolt Holes: 16 off 31.7mm diameter
Bore Diameter: 461.7mm (B)
Material: Stainless Steel
Grade: 304
Standards: ASME B16.5
Flange Face: Raised Face
Certification Available: 3.1 BS EN 10204 Material Certification

Alternative terminology:
Slip on Flange, Weld on, Stainless Steel, Raised Faced, ASA 150LB, SOB