Dimensions and tolerances, materials, methods of manufacture, pressure/temperature ratings, marking, inspection, tests for seamless and fabricated fittings: 45° long radius elbows, 90° long and short radius elbows, 90° long radius tangent elbows, long and short radius return bends, equal and reducing tees, concentric and eccentric reducers, caps and lap-joint stub ends, of sizes in to 24 in. Welding-neck flanges not included.Cross References:BS 1501-1506BS 1560BS 1600BS 2600 BS 2910BS 2926BS 3351Partially replaced by BS EN 10253-4:2008.Incorporates the following:PD 4890 published 15 April 1963PD 5747 published 15 February 1966PD 6265 published 15 September 1967