BLD Forge Direct
Blind flange RFQs are checked by standard, size, class or PN, facing, material grade, thickness, marking, inspection documents and destination country before quotation.
Confirm in one screen that the photo, the product name and the supply scope all describe the same forged part.
Product family: Flanges
Blind flange RFQs are checked by standard, size, class or PN, facing, material grade, thickness, marking, inspection documents and destination country before quotation.
The single authoritative view of what we can supply against your standard, drawing, material and inspection requirements.
| Scope and rating | |
|---|---|
| Size and rating review | NPS 1/2 to 60, DN 15 to 1500, ASME Class 150 to 2500 and PN ratings by EN/DIN/GOST tables. |
| Supplied variants |
|
| Standards and materials | |
| Standards / drawings |
|
| Material grades |
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| Geometry, tolerance and inspection | |
| Critical dimensions | OD, thickness, bolt pattern, RF/FF/RTJ face, gasket contact surface and pressure-test requirement. |
| Inspection depth | Thickness check, drilling, face finish, marking, MTC 3.1, PMI and NDT when high-pressure service requires it. |
| Reviewed before quotation |
|
| Buying logic | |
| Best-fit RFQ | Best for closed-end pipe, vessel nozzle and pressure isolation line items. |
| Buyer application | Pipeline isolation, pressure vessel nozzles, valve end closures and maintenance blinds. |
Generated from the published values above - it does not invent standard dimensions. Final manufacturing and inspection follow your current standard, drawing revision and project specification.
Also known as
Use this route to understand what has to be confirmed before price, lead time, MTC 3.1 and third-party inspection commitments are made.
Material grade, heat number, certificate basis and substitution limits are checked against the Blind Flanges drawing or standard before procurement is released.
The forging route is selected around flange type, section thickness, bore allowance, hub or neck geometry and pressure-service requirements.
Heat treatment is planned with the required record package, mechanical testing basis and impact-test condition where low-temperature or alloy service applies.
Rough machining opens reference faces, bore, hub, neck or sealing-face stock needed to control allowance before final flange machining.
Final machining controls facing, bore, bolt pattern, groove, sealing surface and flange-table or drawing tolerances before dimensional inspection is issued.
Inspection covers dimensional report, MTC 3.1, PMI and required UT, MT or PT records before the release documents are matched to the purchase order.
Marking, packing and export documents are prepared by PO line item so the Blind Flanges shipment can clear customs and be identified at site receiving.
Include document requirements with the first RFQ so inspection cost and timing are visible before offer comparison.
Complete offers come back fastest when the first message carries the data below - and avoids the omissions that make quotations look cheaper than they are.
Short answers for common RFQ questions.
Yes. Figure-8 spectacle blinds, paddle blanks and spacer rings are machined from the same forged plate stock as blind flanges, to line class or drawing. State standard or drawing, line size, pressure class, thickness, material grade and inspection documents in the RFQ.
Email quote@bldforgedirect.com with standard, drawing, material, quantity and inspection requirements.