01
Identify the component
State flange type, nominal size, quantity, material grade, UNS, and product-form standard.
RTI procurement resource
How to Send a Complete Flange RFQ
A complete flange request separates the material route from the pressure boundary, connection geometry, dimensional standard, quality plan, documentation, quantity, and delivery context. This buyer guide maps the inputs engineers commonly need to review WN, slip-on, blind, socket-weld, threaded, lap-joint, long weld neck, or drawing-defined flange enquiries without assuming a generic description is enough to quote correctly.
Working method
Use the checklist to create a technical record before issuing the RFQ.
Working method
Four controls before technical quotation.
Technical checklist
What to make explicit in the order.
Flange type
WNRF, WNRTJ, SORF, blind, socket weld, threaded, lap joint, long weld neck, or drawing-defined.
Connection data
NPS, class, facing, bore, schedule or wall where relevant, and mating component information.
Material route
Commercial grade, UNS, ASTM or ASME material route, heat traceability, and substitution restriction.
Quality scope
PMI, certificate, NDE, TPI, visual or dimensional records, marking, and preservation requirements.
Document controls
Release evidence should match the order.
Material certificate
State MTC or EN 10204 3.1 requirement and reconcile it to heat number and ordered product form.
Inspection plan
Define hold, witness, review, and release points before manufacturing.
Drawing control
Use the approved drawing number and revision in the purchase order and on the document register.
Buyer questions
Frequently asked questions.
Ready to define an order?
Prepare a technical quotation request.
Use the advanced RFQ to capture the component, material, standards, dimensions, inspection, documents, packing, and destination requirements in one reviewable form.
