49 C.F.R. § 179.220-25 Stamping.
Title 49 - Transportation
To certify that the tank complies with all specification requirements, each outer shell must be plainly and permanently stamped in letters and figures at least [Amdt. 179–9, 36 FR 21343, Nov. 6, 1971]
Title 49: Transportation
PART 179—SPECIFICATIONS FOR TANK CARS
Subpart D—Specifications for Non-Pressure Tank Car Tanks (Classes DOT-111AW and 115AW)
§ 179.220-25 Stamping.
------------------------------------------------------------------------ Examples of required stamping------------------------------------------------------------------------Specifications............................ DOT-115A60W6.Inner container: Material................................ ASTM A240-316L. Shell thickness......................... Shell 0.167 in. Head thickness.......................... Head 0.150 in. Tank builders initials.................. ABC. Date of original test................... 00-0000.Outer shell: Material................................ ASTM A285-C. Tank builders initials.................. WYZ.Car assembler (if other than inner DEF. container or outer shell builders).------------------------------------------------------------------------
