Reference profile
- Designation
- API 577
- Title
- Welding Processes, Inspection, and Metallurgy
- Issuing body
- API
- Current edition
- [verify]
- Status
- Library record: reviewed; official standard status [verify].
- Category
- Inspection & Maintenance
1
Overview
Guidance for welding inspection, welding processes, metallurgy, and common discontinuities.
2
Scope & Applicability
Covers
- Welding processes
- WPS and PQR
- Weld discontinuities
- Welder qualification
Does NOT cover (exclusions)
- Exclusions are not documented in this library record. Confirm the official publication, neighbouring codes, the adopted edition, and jurisdictional boundaries before application.
3
Key Requirements
Lifecycle requirements
- Inspection planning
- Integrity assessment
- Repair decision
4
Technical Details
Guidance for welding inspection, welding processes, metallurgy, and common discontinuities.
Components: In-service equipment, Inspection record.
Where to find it in the codeRefer to the official table of contents and the sections cited by the project specification; section numbering can vary by edition.
5
Engineering Notes
- Use the current adopted edition together with jurisdictional requirements.
6
Related Standards
- ASME BPVC IX
Companion or referenced standard; verify its exact relationship in the adopted edition.
- API 510
Companion or referenced standard; verify its exact relationship in the adopted edition.
- API 570
Companion or referenced standard; verify its exact relationship in the adopted edition.
7
Source, Edition & Status
- Publisher
- API
- Edition Year
- N/A
- Industries
- Petrochemical, Refinery, Chemical, Oil & Gas
- Content Status
- reviewed
- Last Reviewed
- 2026-07-01
- Last Updated
- 2026-07-01
- Verified By
- Engineering Reviewer
- Official Link
- N/A
This paraphrased summary is a discovery aid. Do not reproduce or substitute it for the copyrighted official publication or jurisdictional requirements.