BS 1640-4:1968

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 19 mm to 609.5 mm. Welding-neck flanges not included.

Cross References:
BS 1501-1506
BS 1560
BS 1600
BS 2600
BS 2910
BS 2926
BS 3351


Partially replaced by BS EN 10253-4:2008.

All current amendments available at time of purchase are included with the purchase of this document.