Steel sq. bar 25 mm( x 500 mm long or multiples) to specn. is: -4431- 1978. gd. 40 c 10 s 18 (b) .,st. sqr. 70mm in std. length to specn. is: 5517- 1993, des. 42cr4mo2 lrs 100.,steel round 36 mm dia to specn. jss 9510-07- 2001, code ref: a- 75(lvfd),steel square 100 mm to specn. jss 9510-07-2001 code ref a. 75. (lvfd) supply condn. as forged. a separate,steel bloom/square 150 mm x 1000 mm long or its multiple to jss: 9510-07-2001 code reference a-75 (,steel round bar 150 mm dia x 1300 mm or its multiples in length to specn- is: - 5517-1993, gd. 40 ni 6