Covers seamless, centrifugal cast and welded corrosion resistant alloy line pipe. Austenitic Stainless, and Martensitic Stainless, Duplex Stainless and Ni Base Alloys. Includes standard weight, regular weight, special, extra strong, and double extra strong plain end line pipe. Processes of manufacturer, chemical and physical requirements and methods of test. Metric units in this specification are shown in italic type in parentheses in the text and in many tables.