DOT-3AL Cylinders Made of Aluminum Alloy 6351-T6 · Eddy current examination combined with visual inspection

For DOT-3AL Cylinders Made of Aluminum Alloy 6351-T6, test or inspection is Eddy current examination combined with visual inspection; interval is 5; regulation section is 49 CFR § 180.209, recorded from its source on 2026-08-06; source re-checked 2026-09-30.

Values marked our reading are our classification of what the source says — the source does not print them in those words. The quote below is the evidence for each one; judge it yourself.

What the source says

Table 4 to Paragraph (m)—Requalification and Inspection of DOT-3AL Cylinders Made of Aluminum Alloy 6351-T6 Requalification requirement | Examination procedure 1 | Sustained Load Cracking Condemnation Criteria 2 | Requalification period (years) | Eddy current examination combined with visual inspection | Eddy current—In accordance with Appendix C of this part Visual inspection—In accordance with CGA Pamphlet C-6.1 (IBR; see § 171.7 of this subchapter) | Any crack in the neck or shoulder of 2 thread lengths or more | 5

— law.cornell.edu, retrieved 2026-08-06

Source

• law.cornell.eduhttps://www.law.cornell.edu/cfr/text/49/180.209

Last verified against source: 2026-09-30. Due for re-check by 2027-09-30. This page as Markdown · OKF bundle · full dataset as JSON.