# -4 Material.

**Citation:** 49 CFR 179.201-4  
**Type / status:** regulation / current  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** 2026-08-18  
**Published:** Not stated

All fittings, tubes, and castings and all projections and their closures, except for protective housing, must also meet the requirements specified in ASTM A 262 (IBR, see § 171.7 of this subchapter), except that when preparing the specimen for testing the carburized surface may be finished by grindi

## Document text

All fittings, tubes, and castings and all projections and their closures, except for protective housing, must also meet the requirements specified in ASTM A 262 (IBR, see § 171.7 of this subchapter), except that when preparing the specimen for testing the carburized surface may be finished by grinding or machining.

[68 FR 75762, Dec. 31, 2003]

## Provenance

- Official: Yes
- Source: <https://www.ecfr.gov/on/2026-08-18/title-49/section-179.201-4>
- Source ID: `ecfr`
- SHA-256: `e537d87d5ad4f0f0222ca5896a3552e27e3a204780876f4eb69650bb01d1fec1`
- Retrieved: 2026-08-20T05:46:20.606Z
- Exported: 2026-08-23T12:00:35.168Z
- Document slug: `49-cfr-179-201-4`

### Source metadata

```json
{
  "cfrTitle": 49,
  "part": "179",
  "section": "179.201-4",
  "subpart": "Subpart D—Specifications for Non-Pressure Tank Car Tanks (Classes DOT-111AW, 115AW, and 117AW)",
  "corpusVersion": "2026-08-18",
  "jurisdiction": "US"
}
```