[Code of Federal Regulations]
[Title 49, Volume 3]
[Revised as of October 1, 2004]
From the U.S. Government Printing Office via GPO Access
[CITE: 49CFR192.63]

[Page 38-39]
 
                        TITLE 49--TRANSPORTATION
 
 CHAPTER I--RESEARCH AND SPECIAL PROGRAMS ADMINISTRATION, DEPARTMENT OF 
                       TRANSPORTATION (CONTINUED)
 
PART 192_TRANSPORTATION OF NATURAL AND OTHER GAS BY PIPELINE: MINIMUM 
FEDERAL SAFETY STANDARDS--Table of Contents
 
                           Subpart B_Materials
 
Sec. 192.63  Marking of materials.

    (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.

[[Page 39]]

    (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]