Confirm flange type, standard and drawing basis
BLD Forge Direct
Forged Flange RFQ Checklist
A complete forged flange RFQ should clearly state the standard, material, size, pressure rating, facing, quantity, inspection process and destination. Use this checklist to prepare the first message clearly so quotation review can start without repeated clarification.
Summary
A complete forged flange RFQ should clearly state the standard, material, size, pressure rating, facing, quantity, inspection process and destination. Use this checklist to prepare the first message clearly so quotation review can start without repeated clarification.
List size, pressure rating, material and quantity
Attach inspection and certificate requirements early
Include destination country and packing expectations
RFQ Data Fields That Prevent Re-Quotation
| RFQ field | Minimum usable data | Example | Why it matters |
|---|---|---|---|
| Standard | ASME, EN, DIN, GOST or drawing number | ASME B16.5 | Sets dimensional table and inspection basis |
| Size | NPS or DN plus bore or schedule | NPS 6, Sch 80 bore | Prevents bore and wall-thickness mismatch |
| Pressure rating | Class or PN | Class 600 or PN 40 | Controls thickness, drilling and face requirements |
| Material | Exact grade and condition | ASTM A105N or A350 LF2 | Controls MTC, heat treatment and test route |
| Facing | RF, FF, RTJ or drawing face | RTJ R46 groove | Changes machining and inspection scope |
| Documents | MTC, NDT and third-party inspection | MTC 3.1 + PMI + UT | Prevents late document cost additions |
Practical Checklist
Use this list before sending drawings or line items for quotation review.
Flange type: weld neck, slip-on, blind, socket weld, threaded, lap joint or custom drawing
Standard or drawing: ASME B16.5, EN, DIN, GOST or project-specific drawing
Size: NPS or DN, plus bore if the drawing is not standard
Pressure rating: Class, PN or project pressure requirement
Material grade and condition, such as ASTM A105, A105N or A350 LF2
Facing and connection details: RF, RTJ, FF, bore, bolt pattern and tolerance notes
Quantity, required delivery destination and needed-by date
Inspection documents: MTC 3.1, dimensional report, PMI, UT, MT, PT or third-party inspection
Common RFQ Mistakes
These points often cause repeated clarification, price revisions or document mismatch.
- Sending only a product name without standard, size or pressure rating
- Mixing DN, NPS, PN and Class references without a drawing or specification
- Leaving facing, bore or bolt pattern unclear for non-standard requirements
- Requesting certificate or inspection documents only after price discussion
- Omitting destination country, packing requirement or third-party inspection need
FAQ
Short answers for buyers preparing this RFQ topic.
What information must a forged flange RFQ include for an accurate quote?
State the standard (ASME B16.5, EN 1092-1, DIN or GOST), flange type, NPS or DN, pressure class or PN, facing (RF, RTJ or FF), material grade, bore or schedule, quantity, inspection documents and destination country. Missing any of these usually causes re-quotation.
Why does the destination country matter in a flange RFQ?
Destination drives packing standard, document language, certificate requirements and freight terms. A quotation without the destination can miss export packing, marking or documentation costs.
Should inspection requirements be sent before or after the price?
Before. MTC 3.1, PMI, UT, MT/PT or third-party inspection each add measurable cost and lead time. Prices compared without the same inspection scope are not comparable.
Can one RFQ mix several flange standards and sizes?
Yes. Send a line-item table with one row per standard, type, size, class, material and quantity. Clear line items are quoted faster than mixed free-text descriptions.
Send your RFQ or drawing directly to BLD Forge Direct.
Email quote@bldforgedirect.com with standard, drawing, material, quantity and inspection requirements.