MIL-D-9898C, MILITARY SPECIFICATION: DRAWING, TUBE BEND (21 JAN 1986) [NO S/S DOCUMENT]

MIL-D-9898C, MILITARY SPECIFICATION: DRAWING, TUBE BEND (21 JAN 1986) [NO S/S DOCUMENT]., This specification covers tube bend drawings prepared by the Air Force and by contractors for tubing formed by draw bending machines.