49 C.F.R. § 192.63 Marking of materials.
Title 49 - Transportation
(a) Except as provided in paragraph (d) of this section, each valve, fitting, length of pipe, and other component must be marked— (1) As prescribed in the specification or standard to which it was manufactured, except that thermoplastic fittings must be marked in accordance with ASTM D 2513; or (2) To indicate size, material, manufacturer, pressure rating, and temperature rating, and as appropriate, type, grade, and model. (b) Surfaces of pipe and components that are subject to stress from internal pressure may not be field die stamped. (c) If any item is marked by die stamping, the die must have blunt or rounded edges that will minimize stress concentrations. (d) Paragraph (a) of this section does not apply to items manufactured before November 12, 1970, that meet all of the following: (1) The item is identifiable as to type, manufacturer, and model. (2) Specifications or standards giving pressure, temperature, and other appropriate criteria for the use of items are readily available. [Amdt. 192–1, 35 FR 17660, Nov. 17, 1970, as amended by Amdt. 192–31, 43 FR 883, Apr. 3, 1978; Amdt. 192–61, 53 FR 36793, Sept. 22, 1988; Amdt. 192–62, 54 FR 5627, Feb. 6, 1989; Amdt. 192–61A, 54 FR 32642, Aug. 9, 1989; 58 FR 14521, Mar. 18, 1993; Amdt. 192–76, 61 FR 26122, May 24, 1996; 61 FR 36826, July 15, 1996]
Title 49: Transportation
PART 192—TRANSPORTATION OF NATURAL AND OTHER GAS BY PIPELINE: MINIMUM FEDERAL SAFETY STANDARDS
Subpart B—Materials
§ 192.63 Marking of materials.
