Material identity
Monel 400 / UNS N04400

Alloy flanges and fittings
Raymond Tube Industries manufactures, supplies, and exports Monel 400 / UNS N04400 flanges for saltwater-facing and defined process piping systems. Buyers can state the approved material route, flange form, NPS or DN, pressure class, facing, bore, dimensional standard, traceability, testing, documentation, packing, quantity, and destination for technical and commercial review.
Technical snapshot
| Nominal size | DN | Product | Standard | RFQ review |
|---|---|---|---|---|
| 1/2" | DN 15 | Flange | ASME B16.5 | |
| 3/4" | DN 20 | Flange | ASME B16.5 | |
| 1" | DN 25 | Flange | ASME B16.5 | |
| 1-1/4" | DN 32 | Flange | ASME B16.5 | |
| 1-1/2" | DN 40 | Flange | ASME B16.5 | |
| 2" | DN 50 | Flange | ASME B16.5 | |
| 2-1/2" | DN 65 | Flange | ASME B16.5 | |
| 3" | DN 80 | Flange | ASME B16.5 | |
| 4" | DN 100 | Flange | ASME B16.5 | |
| 5" | DN 125 | Flange | ASME B16.5 | |
| 6" | DN 150 | Flange | ASME B16.5 | |
| 8" | DN 200 | Flange | ASME B16.5 | |
| 10" | DN 250 | Flange | ASME B16.5 | |
| 12" | DN 300 | Flange | ASME B16.5 | |
| 14" | DN 350 | Flange | ASME B16.5 | |
| 16" | DN 400 | Flange | ASME B16.5 | |
| 18" | DN 450 | Flange | ASME B16.5 | |
| 20" | DN 500 | Flange | ASME B16.5 | |
| 22" | DN 550 | Flange | ASME B16.5 | |
| 24" | DN 600 | Flange | ASME B16.5 |
| Nominal size | DN | Product | Standard | RFQ review |
|---|---|---|---|---|
| 26" | DN 650 | Large-diameter flange | ASME B16.47 | |
| 28" | DN 700 | Large-diameter flange | ASME B16.47 | |
| 30" | DN 750 | Large-diameter flange | ASME B16.47 | |
| 32" | DN 800 | Large-diameter flange | ASME B16.47 | |
| 34" | DN 850 | Large-diameter flange | ASME B16.47 | |
| 36" | DN 900 | Large-diameter flange | ASME B16.47 | |
| 38" | DN 950 | Large-diameter flange | ASME B16.47 | |
| 40" | DN 1000 | Large-diameter flange | ASME B16.47 | |
| 42" | DN 1050 | Large-diameter flange | ASME B16.47 | |
| 44" | DN 1100 | Large-diameter flange | ASME B16.47 | |
| 46" | DN 1150 | Large-diameter flange | ASME B16.47 | |
| 48" | DN 1200 | Large-diameter flange | ASME B16.47 | |
| 50" | DN 1250 | Large-diameter flange | ASME B16.47 | |
| 52" | DN 1300 | Large-diameter flange | ASME B16.47 | |
| 54" | DN 1350 | Large-diameter flange | ASME B16.47 | |
| 56" | DN 1400 | Large-diameter flange | ASME B16.47 | |
| 58" | DN 1450 | Large-diameter flange | ASME B16.47 | |
| 60" | DN 1500 | Large-diameter flange | ASME B16.47 |
Engineering discussion
Monel 400 flanges cannot be defined by grade alone. Their engineering review depends on the exact product form, connection geometry, design boundary, material condition where relevant, inspection plan, and the project specification that governs acceptance.
For Monel 400 Flanges, the RFQ must turn Monel 400 / UNS N04400 into a defined material, product-form, dimensional, inspection, document-release, quantity, packing, and delivery record. This avoids using a general alloy or product label as an unapproved technical conclusion.
Before issuing an order for Monel 400 Flanges, reconcile Flanges with the drawing or piping class, standard edition, test plan, acceptance authority, and certificate requirements. Any deviation, alternative material, or added test is a project engineering decision.
Standards and release
ASTM B564 / ASME SB564 and ASTM B366 / ASME SB366 as applicable
ASME B16.5 dimensional and facing review
MTC, PMI, inspection records, and project document requirements
Applications and next steps
saltwater-facing and process piping systems
Specification-led flange packages
Project piping-class procurement
Drawing and data-sheet enquiries
Buyer questions
Technical quotation
Capture the material, product form, dimensions, standard, inspection, documentation, packing, and destination requirements for review.
Technical quotation desk
Send us your material grade, size, class or schedule, quantity, and specification.