Confirm certificate type and traceability requirements early
BLD Forge Direct
Inspection Document Checklist for Forged Flanges
Inspection documents should be agreed before quotation, not after production. This guide helps buyers specify MTC 3.1, dimensional report, PMI, UT, MT, PT, heat treatment records and third-party inspection requirements at RFQ stage.
Summary
Inspection documents should be agreed before quotation, not after production. This guide helps buyers specify MTC 3.1, dimensional report, PMI, UT, MT, PT, heat treatment records and third-party inspection requirements at RFQ stage.
List NDT, PMI and dimensional reports before price comparison
State whether third-party inspection is review, witness or release
Match markings, heat numbers and document language with the project specification
Inspection Document Matrix
| Document | When to request | Evidence expected | Quotation impact |
|---|---|---|---|
| Dimensional report | All critical flange and custom forging RFQs | Measured dimensions against drawing/table | Low to medium |
| PMI | Stainless, duplex, alloy or mixed-grade orders | PMI report or marked verification | Medium |
| UT | Heavy forgings, rings, pressure parts | UT procedure and acceptance level | Medium to high |
| MT/PT | Surface crack detection or pressure components | MT/PT report and acceptance criteria | Medium |
| Impact test | LF2 or low-temperature service | Charpy impact record | Medium |
| Third-party inspection | EPC or end-user hold point | ITP, witness report and release note | High if added late |
Practical Checklist
Use this list before sending drawings or line items for quotation review.
MTC EN 10204 3.1 or project-specific certificate wording
Heat number, material grade and product marking requirements
Chemical and mechanical test values required by the standard
Dimensional report scope and acceptance tolerance
PMI, UT, MT, PT, hardness, impact test or other requested inspection
Third-party inspection agency, hold point and release document
Document language, stamping, packing list and export document handover
Common RFQ Mistakes
These points often cause repeated clarification, price revisions or document mismatch.
- Requesting inspection documents only after the commercial price is agreed
- Comparing quotations without confirming whether NDT is included
- Leaving third-party inspection hold points undefined
- Not matching heat numbers between products, marks and certificates
- Forgetting document language, stamp or release-note requirements
FAQ
Short answers for buyers preparing this RFQ topic.
Which inspection documents are standard for forged flange orders?
A typical set: EN 10204 3.1 material certificate, dimensional inspection report, heat treatment record, and marking/packing lists. Project orders may add PMI, UT/MT/PT reports, hardness results and third-party release notes.
What is PMI and when should it be requested?
Positive Material Identification verifies alloy composition on the finished part, usually by portable XRF. It is standard for stainless, duplex and alloy grades where material mix-up risk matters, and should be requested in the RFQ if required.
What are witness and hold points in an ITP?
An Inspection and Test Plan can define points where the buyer or third party observes a test (witness) or where production must stop until release (hold). These affect scheduling and cost, so they belong in the RFQ, not after order placement.
Send your RFQ or drawing directly to BLD Forge Direct.
Email quote@bldforgedirect.com with standard, drawing, material, quantity and inspection requirements.