49 CFR § 192.113 - Longitudinal joint factor (E) for steel pipe.

---
identifier: "/us/cfr/t49/s192.113"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "49 CFR § 192.113 - Longitudinal joint factor (E) for steel pipe."
title_number: 49
title_name: "Transportation"
section_number: "192.113"
section_name: "Longitudinal joint factor (E) for steel pipe."
chapter_name: "PIPELINE AND HAZARDOUS MATERIALS SAFETY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION"
subchapter_number: "D"
subchapter_name: "PIPELINE SAFETY"
part_number: "192"
part_name: "TRANSPORTATION OF NATURAL AND OTHER GAS BY PIPELINE: MINIMUM FEDERAL SAFETY STANDARDS"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "30 U.S.C. 185(w)(3), 49 U.S.C. 5103, 60101  and 49 CFR 1.97."
regulatory_source: "35 FR 13257, Aug. 19, 1970, unless otherwise noted."
cfr_part: "192"
---


# 192.113 Longitudinal joint factor (E) for steel pipe.

(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]