Illustrative machined alloy flange forms for a technical reference

Alloy flanges and fittings

254 SMO Flanges Manufacturer & Exporter

Name: 254 SMO Flanges
Brand: Raymond Tube Industries

Raymond Tube Industries manufactures, supplies, and exports 254 SMO / UNS S31254 flanges for chloride-critical process, marine, and water-treatment piping systems. Buyers can define flange form, NPS or DN, class, facing, bore, material and dimensional standards, inspection, testing, documentation, packing, quantity, and destination.

Technical snapshot

Key details for your specification.

Material identity

254 SMO / UNS S31254

Product route

Flanges

Dimensional control

ASME B16.5 dimensional and facing review

Service discussion

seawater and aggressive chloride-bearing media review

Controlled size architecture

Flange size and configuration matrix

NPS 1/2 through NPS 24 under ASME B16.5. Standard dimensions are shown for specification planning; availability, manufacturing route, and delivery are confirmed against the final RFQ specification.

Final RFQ confirmation

Class / schedule scope

Classes 150, 300, 400, 600, 900 and 1500. Class 2500 requires the applicable NPS and current governing table to be checked.

Facing / end scope

RF / RTJ as applicable

ASME B16.5 flanges nominal size and configuration guide
Nominal size	DN	Product	Standard	RFQ review
1/2"	DN 15	Flange	ASME B16.5	Final RFQ
3/4"	DN 20	Flange	ASME B16.5	Final RFQ
1"	DN 25	Flange	ASME B16.5	Final RFQ
1-1/4"	DN 32	Flange	ASME B16.5	Final RFQ
1-1/2"	DN 40	Flange	ASME B16.5	Final RFQ
2"	DN 50	Flange	ASME B16.5	Final RFQ
2-1/2"	DN 65	Flange	ASME B16.5	Final RFQ
3"	DN 80	Flange	ASME B16.5	Final RFQ
4"	DN 100	Flange	ASME B16.5	Final RFQ
5"	DN 125	Flange	ASME B16.5	Final RFQ
6"	DN 150	Flange	ASME B16.5	Final RFQ
8"	DN 200	Flange	ASME B16.5	Final RFQ
10"	DN 250	Flange	ASME B16.5	Final RFQ
12"	DN 300	Flange	ASME B16.5	Final RFQ
14"	DN 350	Flange	ASME B16.5	Final RFQ
16"	DN 400	Flange	ASME B16.5	Final RFQ
18"	DN 450	Flange	ASME B16.5	Final RFQ
20"	DN 500	Flange	ASME B16.5	Final RFQ
22"	DN 550	Flange	ASME B16.5	Final RFQ
24"	DN 600	Flange	ASME B16.5	Final RFQ

This table records nominal standard scope, not a promise that every type, class, facing, bore, or material combination is available.

Use the RFQ selector to state product form, NPS / DN, class or schedule, facing or end connection, testing, and documents for review.

Controlled size architecture

Flange size and configuration matrix

NPS 26 through NPS 60 under ASME B16.47. Standard dimensions are shown for specification planning; availability, manufacturing route, and delivery are confirmed against the final RFQ specification.

Final RFQ confirmation

Class / schedule scope

Series and class require technical review

Facing / end scope

Facing / drawing review

ASME B16.47 large-diameter flanges nominal size and configuration guide
Nominal size	DN	Product	Standard	RFQ review
26"	DN 650	Large-diameter flange	ASME B16.47	Final RFQ
28"	DN 700	Large-diameter flange	ASME B16.47	Final RFQ
30"	DN 750	Large-diameter flange	ASME B16.47	Final RFQ
32"	DN 800	Large-diameter flange	ASME B16.47	Final RFQ
34"	DN 850	Large-diameter flange	ASME B16.47	Final RFQ
36"	DN 900	Large-diameter flange	ASME B16.47	Final RFQ
38"	DN 950	Large-diameter flange	ASME B16.47	Final RFQ
40"	DN 1000	Large-diameter flange	ASME B16.47	Final RFQ
42"	DN 1050	Large-diameter flange	ASME B16.47	Final RFQ
44"	DN 1100	Large-diameter flange	ASME B16.47	Final RFQ
46"	DN 1150	Large-diameter flange	ASME B16.47	Final RFQ
48"	DN 1200	Large-diameter flange	ASME B16.47	Final RFQ
50"	DN 1250	Large-diameter flange	ASME B16.47	Final RFQ
52"	DN 1300	Large-diameter flange	ASME B16.47	Final RFQ
54"	DN 1350	Large-diameter flange	ASME B16.47	Final RFQ
56"	DN 1400	Large-diameter flange	ASME B16.47	Final RFQ
58"	DN 1450	Large-diameter flange	ASME B16.47	Final RFQ
60"	DN 1500	Large-diameter flange	ASME B16.47	Final RFQ

RTI large-diameter availability is not published. Use the technical quotation flow with the current dimensional standard and drawing.

Use the RFQ selector to state product form, NPS / DN, class or schedule, facing or end connection, testing, and documents for review.

Controlled size selector

Configure this alloy requirement.

Use the controlled NPS / DN conversion, then pass size, class or schedule, facing or end connection, and quantity to the RFQ.

Final RFQ confirmation

MaterialProductProduct typeSizePressure classSchedule / boreFacingQuantity

Selected requirement

254 SMO / UNS S31254 | Weld Neck Flange | 6" / DN 150 | Class 600 | RTJ

ASME B16.5. Availability, manufacturing route, and delivery are confirmed against the final RFQ specification.

View technical details Request Technical Quotation

Engineering discussion

Context before component selection.

Engineering context

254 SMO 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.

Specification controls

For 254 SMO Flanges, the RFQ must turn 254 SMO / UNS S31254 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.

Procurement decision

Before issuing an order for 254 SMO 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

Define the basis, then document it.

Material route

Project-specific product-form standard to be confirmed against the purchase specification

Dimensional route

ASME B16.5 dimensional and facing review

Quality release

MTC, PMI, inspection records, and project document requirements

Applications and next steps

Connect the requirement to the right workflow.

chloride-critical process, marine, and water treatment systems

Specification-led flange packages

Project piping-class procurement

Drawing and data-sheet enquiries

Stainless Steel Flanges overviewReview the authoritative stainless steel flanges product-family route.Material dataReview 254 SMO context.Product engineeringReview product configuration controls.Advanced RFQCapture enquiry data.

Buyer questions

Frequently asked questions.

Which flanges can be reviewed in 254 SMO?

The required configuration must be identified by the drawing or piping class. State the form, dimensions, facing or end connection, material route, and inspection scope for technical review.

Which standards should accompany a 254 SMO flanges enquiry?

Use the approved material product standard together with the governing dimensional standard, project specification, and any drawing or client inspection requirement.

Which records should be requested with 254 SMO flanges?

Define the MTC type, heat traceability, PMI, dimensional record, test evidence, third-party inspection requirement, marking, packing, and release dossier before quotation.

Technical quotation

Turn this guidance into a controlled request.

Capture the material, product form, dimensions, standard, inspection, documentation, packing, and destination requirements for review.

Submit Technical RFQ Email Export Desk

254 SMO Flanges Manufacturer & Exporter

Key details for your specification.

Flange size and configuration matrix

Flange size and configuration matrix

Configure this alloy requirement.

Context before component selection.

Engineering context

Specification controls

Procurement decision

Define the basis, then document it.

Material route

Dimensional route

Quality release

Connect the requirement to the right workflow.

Frequently asked questions.

Turn this guidance into a controlled request.

Have a Technical Requirement?