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Document Designation and Title Year Select Item(s) C505 Standard Specification for Nonreinforced Concrete Irrigation Pipe with Rubber Gasket Joints 05a C505 Standard Specification for Nonreinforced Concrete Irrigation Pipe With Rubber Gasket Joints 05 C505 Standard Specification for Nonreinforced Concrete Irrigation Pipe With Rubber Gasket Joints 03 C505 Standard Specification for Nonreinforced Concrete Irrigation Pipe With Rubber Gasket Joints 99a