Cross References:BS 3503S 100Replaces BS 4S 21:1949.
BS 5S 21:1964
Original price was: $78.74.$39.00Current price is: $39.00.
Specification for aircraft material. ’20’ carbon steel (suitable for welding) (25/35 tonf/sq in: maximum size 6 inches diameter or minor sectional dimension)
BSI Group , 01/31/1964
Pages: 6


