Supply Of Description :- Flap Door Chainless Cotter. Drawing No.:- Rdsos Drg. No. Wd- 23018-s-01, Alt. 4, Item No. 8. Material And Specification :- As Per Drawing; Steel Class 2, Is:1875:1992 Rev. 5, Amend. No. 2 Of Nov. 1994 And Is:2004 :1991 Rev. 3..