L-P-540 Complete Document History
Plastic Tube and Tubing, Heavy Walled, Polyvinl Chloride, +Cancelled, Superseded By L-P-1036


Obsolete Revision Information:
   NOT - PLASTIC TUBE AND TUBING, HEAVY - June 27, 1967
   BASE - PLASTIC TUBE AND TUBING, HEAVY - Jan. 1, 1960