BS Flange

BS Flange are flanges with Dimensions as per BS 4504  or BS10:1962 British Standard, BS 4504 material standard Specification for Flanges and Bolting for Pipes, Valves, and Fittings. BS 4504 standard dimensions from PN6, PN10, PN25 and PN40.

BS Flange VS ASME Flange

1. Material (similarity):

Both BS flange and ASME flange material can be carbon steel, stainless steel and other alloy steel.

2. Design pressure (difference):

About BS flange, the pressure is PN2.5, PN6, PN10, PN16, PN25, PN40. Regarding the ASME flange, the pressure is 150LBS, 300LBS, 400LBS, 600LBS, 900LBS

3. Type (similarity):

Slip on, Weld Neck, Plate, Blind, Socket Weld, Thread, Lap Joint.

4. Installation (similarity and difference):

Same connection,due to OD of British standard is different from that of the American standard, and the flange connection size is different. Before connection, check the applicable standard of the pipe and select the appropriate flange for connection.

https://www.hebeileading.com/uploads/image/20211117/09/bs4504.jpg