Illustrative precision machining of a large alloy weld neck flange in a CNC machining environment

Alloy flanges and fittings

Nickel 201 Flanges Manufacturer & Exporter

Name: Nickel 201 Flanges
Brand: Raymond Tube Industries

This Nickel 201 / UNS N02201 page is intentionally separate from Nickel 200 because low-carbon grade identity and temperature context are part of the purchasing decision. Submit the approved source-material and flange route, drawing or dimensional standard, size, class, facing, bore, process conditions, inspection, certificate requirements, quantity, packing, and destination.

Technical snapshot

Key details for your specification.

Material identity

Nickel 201 / UNS N02201 low-carbon commercially pure wrought nickel

Material standard

Project-approved N02201 flange route; current ASTM B564 scope lists N02200, not N02201

Product definition

Approved source material plus flange form, dimensions, class, facing, and bore

Inspection

Chemistry and carbon verification, MTC, traceability, dimensions, marking, and purchaser release

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

Nickel 201 | 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.

Low-carbon identity is the reason for a separate route

Nickel 201 is the low-carbon form of commercially pure wrought nickel and is considered where the carbon-related behavior of Nickel 200 at elevated temperature is a concern. The exact UNS designation, process envelope, and chemistry evidence should remain visible from RFQ through final marking.

Current B564 scope should not be overstated

The active ASTM B564 scope lists UNS N02200 for nickel forgings but does not list N02201. A Nickel 201 flange enquiry therefore needs an agreed source-material specification, manufacturing method, dimensions, mechanical and NDE acceptance, and documented engineering or purchaser approval.

Carbon verification deserves explicit planning

Handheld PMI may support nickel identity but may not establish the low-carbon requirement by itself. Define MTC chemistry review, heat traceability, source certificates, laboratory verification where required, marking, and TPI hold points so the N02201 designation is defensible at release.

Standards and release

Define the basis, then document it.

Material-product route

Current ASTM B564 scope lists UNS N02200 but not N02201. Define an engineering-approved source material, manufacturing route, tests, and acceptance basis for the Nickel 201 flange.

ASME or drawing dimensions

Dimensional conformity does not establish material conformity. State flange form, size, class, facing, bore, tolerances, and drawing while retaining the separate N02201 approval route.

Chemistry verification

Because low-carbon identity is central to Nickel 201, define how certificate chemistry, heat traceability, source material, and any independent verification will be accepted.

Applications and next steps

Connect the requirement to the right workflow.

Elevated-temperature chemical process reviews

Caustic and controlled-media piping enquiries

Food and high-purity equipment connections

Drawing-based low-carbon nickel components

Nickel Alloy Flanges overviewReview the authoritative nickel alloy flanges product-family route.Material Traceability GuidePlan source certificates, heat identity, marking, and release records.High-Temperature ApplicationsReview the temperature and process inputs behind grade selection.Request Technical QuotationSend the N02201 approved route and flange drawing.

Buyer questions

Frequently asked questions.

Is UNS N02201 listed in the current ASTM B564 forging scope?

No. The current scope lists N02200, not N02201. Use an engineering-approved material-product route and document its acceptance criteria.

Why is Nickel 201 separated from Nickel 200?

Nickel 201 is a low-carbon variant used in a different temperature-related selection context. The exact UNS grade and service envelope must be controlled.

Can handheld PMI alone confirm Nickel 201?

Do not rely on PMI alone for the low-carbon requirement. Review MTC chemistry and define laboratory or purchaser verification where the project requires it.

What must be approved before ordering Nickel 201 flanges?

Approve the source material, manufacturing route, dimensions, condition, tests, chemistry verification, marking, traceability, documents, and any deviations from a standard product route.

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

Nickel 201 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.

Low-carbon identity is the reason for a separate route

Current B564 scope should not be overstated

Carbon verification deserves explicit planning

Define the basis, then document it.

Material-product route

ASME or drawing dimensions

Chemistry verification

Connect the requirement to the right workflow.

Frequently asked questions.

Turn this guidance into a controlled request.

Have a Technical Requirement?