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About This Item

 

Full Description

BS 3293:1960 is a material and dimensional standard only and applies to forged carbon steel slip-on and welding neck flanges of nominal sizes 26 in and larger, for use in the petroleum industry. Drilling, bolting, facing and thickness dimensions are applicable also to integral end flanges of valve and fittings.

Four classes of flanges are provided for, namely Classes 150, 300, 400 and 600.

BS 3293:1960 does not include pressure/temperature ratings; the flange designations quoted are for identification purposes only.



Cross References:
BS 1503
BS 1560
BS 1750
BS 3351
ANSI B16.20
ASTM A 105