Marking of Materials

§ 192.63 Marking of Materials#

(a)Except as provided in paragraph#

(d)and#

(e)of this section, each valve, fitting, length of pipe, and other component must be marked as prescribed in the specification or standard to which it was manufactured.#

(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.#

(e)All plastic pipe and components must also meet the following requirements:#

(1)All markings on plastic pipe prescribed in the listed specification and the requirements of paragraph(e)(2) of this section must be repeated at intervals not exceeding two feet.#

(2)Plastic pipe and components manufactured after December 31, 2019, must be marked in accordance with the listed specification.#

(3)All physical markings on plastic pipelines prescribed in the listed specification and paragraph(e)(2) of this section must be legible until the time of installation.#

(f)Operators shall reidentify pipe if specification markings are obliterated during the coating and/or wrapping process. This reidentification is not necessary if pipe is immediately installed in a system.#