BS 4504 Standard Flange Facings Types,Welding Ends of neck flange
BS 4504 standard flange facings types,welding ends of neck flange.
Weld Neck Flange – Welding Ends
Flange Facings – BS 4504
BS 4504 flange facing types A to H are defined below. The dimensions vary with pipe size (DN) and pressure
rating (PN) as detailed in the following table.