All Carnegie Library of Pittsburgh locations will be closed on Sunday, April 20.

Tools

Topics & Collections

small text medium text large text

BSI Standards List

Standard
Year
Title
BS 2S 139
1977
Specification for 11/2 per cent nickel-chromium-molybdenum steel (110/130 kgf/mm2 (70/83 tonf/in2): limiting ruling section 70 mm (23/4 in))