# Welding.

**Citation:** 49 CFR 178.352-4  
**Type / status:** regulation / historical  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** 2003-10-01  
**Published:** Not stated

Welding must be of material having a melting point in excess of 800 °C (1475 °F) (except that for packages constructed prior to March 31, 1975, this temperature may be 540 °C (1000 °F)), with a joint efficiency of at least 0.85. This requirement applies to welding used in adding spacer rods to compl

## Document text

Welding must be of material having a melting point in excess of 800 °C (1475 °F) (except that for packages constructed prior to March 31, 1975, this temperature may be 540 °C (1000 °F)), with a joint efficiency of at least 0.85. This requirement applies to welding used in adding spacer rods to comply with § 178.352-3(c)(1).

[Amdt. 178-35, 39 FR 45246, Dec. 31, 1974. Redesignated by Amdt. 178-97, 55 FR 52716, Dec. 21, 1990, as amended at 63 FR 37462, July 10, 1998]

## Provenance

- Official: Yes
- Source: <https://www.govinfo.gov/app/details/CFR-2003-title49-vol2/CFR-2003-title49-vol2-sec178-352-4>
- Source ID: `govinfo-cfr`
- SHA-256: `e1e47656640e94f4d98772dcbe77fd8d6e0959df490bffda4a56825f8c88ed5f`
- Retrieved: 2026-08-13T06:37:29.399Z
- Exported: 2026-08-23T09:32:47.223Z
- Document slug: `49-cfr-178-352-4`

### Source metadata

```json
{
  "part": "178",
  "section": "178.352-4",
  "subpart": "Subpart K—Specifications for Packagings for Class 7 (Radioactive) Materials",
  "annualEdition": 2003,
  "revisedAsOf": "2003-10-01",
  "govInfoPackage": "CFR-2003-title49-vol2",
  "legalStatus": "official-annual-cfr-edition",
  "effectiveDateNote": null,
  "historicalAnchor": true,
  "historicalAnchorNote": "The section appears in an official annual CFR edition but is absent from the connected current eCFR corpus.",
  "jurisdiction": "US"
}
```