# a-6 Manufacture.

**Citation:** 49 CFR 178.33a-6  
**Type / status:** regulation / current  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** 2026-08-18  
**Published:** Not stated

(a) By appliances and methods that will assure uniformity of completed containers; dirt and scale to be removed as necessary; no defect acceptable that is likely to weaken the finished container appreciably; reasonably smooth and uniform surface finish required.

(b) Seams when used must be as follo

## Document text

(a) By appliances and methods that will assure uniformity of completed containers; dirt and scale to be removed as necessary; no defect acceptable that is likely to weaken the finished container appreciably; reasonably smooth and uniform surface finish required.

(b) Seams when used must be as follows:

(1) Circumferential seams. By welding, swedging, brazing, soldering, or double seaming.

(2) Side seams. By welding, brazing or soldering.

(c) Ends. The ends shall be of pressure design.

[Order 71, 31 FR 9074, July 1, 1966. Redesignated at 32 FR 5606, Apr. 5, 1967]

## Provenance

- Official: Yes
- Source: <https://www.ecfr.gov/on/2026-08-18/title-49/section-178.33a-6>
- Source ID: `ecfr`
- SHA-256: `e12e14c2724e0a85509a33a1314ecf06e679a8393902c84d0dc6624d6ba18be7`
- Retrieved: 2026-08-20T05:46:20.151Z
- Exported: 2026-08-22T23:48:09.474Z
- Document slug: `49-cfr-178-33a-6`

### Source metadata

```json
{
  "cfrTitle": 49,
  "part": "178",
  "section": "178.33a-6",
  "subpart": "Subpart B—Specifications for Inside Containers, and Linings",
  "corpusVersion": "2026-08-18",
  "jurisdiction": "US"
}
```