# API 1104 Welding of Pipelines and Related Facilities

> API Standard 1104, Welding of Pipelines and Related Facilities, covers qualification of welding procedures and welders, production welding, and the inspection and acceptance criteria (visual, RT, UT, MT, PT) for pipeline welds, with provisions for automated ultrasonic testing and alternative acceptance criteria.

- Source: https://amps.global/glossary/api-1104/
- Type: Glossary
- Published: 2026-09-05
- Tags: standards

## Key facts

- Acceptance criteria are workmanship-based; an annex allows engineering critical assessment alternatives
- Automated UT of girth welds is qualified against project-specific calibration blocks
- Cross-country pipeline projects apply it alongside AS 2885 in Australia
- Welder qualification records and NDT reports are tied to weld numbers along the line

Also known as: API Std 1104, pipeline welding standard.

## What inspection companies deliver

Radiography or AUT of every girth weld at production pace, with reports keyed to weld numbers, plus welder and procedure qualification witnessing.

## API 1104 work in AMPS

Weld-by-weld reports are generated from your Word template with job and location data filled in, technician and equipment certificates are flagged before expiry, and documents saved through AMPS live in your own OneDrive, SharePoint or Google Drive, not on AMPS servers, so an existing QA folder structure keeps working unchanged and everything stays yours if you ever stop using AMPS.

## Related pages

- [Automated ultrasonic testing (AUT)](https://amps.global/glossary/automated-ultrasonic-testing/)
- [Radiographic testing (RT)](https://amps.global/glossary/radiographic-testing/)
- [WPS and PQR](https://amps.global/glossary/wps-and-pqr/)

## Sources

- [API - American Petroleum Institute standards](https://www.api.org/products-and-services/standards)