# Longitudinal joint factor (E) for steel pipe.

**Citation:** 49 CFR 192.113  
**Type / status:** regulation / current  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** 2026-08-18  
**Published:** Not stated

(a) The longitudinal joint factor to be used in the design formula in § 192.105 is determined in accordance with the table 1 to this paragraph (a):

Table 1 to Paragraph (a) Specification Pipe class Longitudinaljoint factor(E) ASTM A53/A53M (incorporated by reference, see § 192.7) Seamless 1.00 Elec

## Document text

(a) The longitudinal joint factor to be used in the design formula in § 192.105 is determined in accordance with the table 1 to this paragraph (a):

Table 1 to Paragraph (a) Specification Pipe class Longitudinaljoint factor(E) ASTM A53/A53M (incorporated by reference, see § 192.7) Seamless 1.00 Electric resistance welded 1.00 Furnace butt welded.60 ASTM A106/A106M (incorporated by reference, see § 192.7) Seamless 1.00 ASTM A333/A333M (incorporated by reference, see § 192.7) Seamless 1.00 Electric resistance welded 1.00 ASTM A381 (incorporated by reference, see § 192.7) Double submerged arc welded 1.00 ASTM A671/A671M (incorporated by reference, see § 192.7) Electric-fusion-welded 1.00 ASTM A672/A672M (incorporated by reference, see § 192.7) Electric-fusion-welded 1.00 ASTM A691/A691M (incorporated by reference, see § 192.7) Electric-fusion-welded 1.00 API Spec 5L (incorporated by reference, see § 192.7) Seamless 1.00 Electric resistance welded 1.00 Electric flash welded 1.00 Submerged arc welded 1.00 Furnace butt welded.60 Other Pipe over 4 inches (102 millimeters).80 Other Pipe 4 inches (102 millimeters) or less.60

(b) If the type of longitudinal joint cannot be determined, the joint factor to be used must not exceed that designated for “Other.”

[Amdt. 192-135, 89 FR 33280, Apr. 29, 2024, as amended by Amdt. 192-156, 90 FR 40763, Aug. 21, 2025]

## Provenance

- Official: Yes
- Source: <https://www.ecfr.gov/on/2026-08-18/title-49/section-192.113>
- Source ID: `ecfr`
- SHA-256: `cfd6b36765e18e0a5e14efa9e928332349d901688ced96df2a887f9b6a714902`
- Retrieved: 2026-08-20T05:54:34.435Z
- Exported: 2026-08-22T10:51:55.696Z
- Document slug: `49-cfr-192-113`

### Source metadata

```json
{
  "cfrTitle": 49,
  "part": "192",
  "section": "192.113",
  "subpart": "Subpart C—Pipe Design",
  "corpusVersion": "2026-08-18",
  "jurisdiction": "US"
}
```