Illustrative precision machining of a large alloy weld neck flange on a CNC machine

Alloy flanges and fittings

Hastelloy C22 Flanges Manufacturer & Exporter

Name: Hastelloy C22 Flanges
Brand: Raymond Tube Industries

Raymond Tube Industries supports Hastelloy C22 / UNS N06022 flange requirements for corrosive process systems where both material identity and process chemistry demand careful review. Define ASTM B564, flange form, NPS or DN, class, facing, bore, dimensional standard, fluid composition, temperature, inspection, MTC, PMI, TPI, packing, and destination.

Technical snapshot

Key details for your specification.

Material identity

Hastelloy C22 / UNS N06022 nickel-chromium-molybdenum-tungsten alloy

Material standard

ASTM B564 / ASME SB564 for forgings

Product definition

Weld neck, blind, slip-on, socket weld, threaded, lap joint, RTJ, or drawing flange

Inspection

MTC, heat traceability, PMI, dimensions, corrosion testing or TPI where specified

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

Hastelloy C22 | 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.

N06022 selection starts with the complete chemical environment

Hastelloy C22 is a nickel-chromium-molybdenum material with tungsten and is known for broad resistance across oxidizing and non-oxidizing chemical contexts. Concentration, contaminants, temperature, aeration, crevices, and upset conditions still determine whether it is appropriate for a specific flange joint.

C22 and C276 should not be merged into one commercial item

Both are nickel-chromium-molybdenum corrosion-resistant alloys, but they have distinct UNS identities, chemistry, performance envelopes, and project histories. A substitution requires a documented engineering comparison of the actual medium, welding, code, product form, and acceptance requirements.

Surface and documentation requirements can be service-critical

State machining finish, facing geometry, cleaning, contamination control, marking method, PMI extent, any corrosion or NDE testing, and protected packing. The release record should preserve heat identity and inspection evidence without introducing unapproved contact materials.

Standards and release

Define the basis, then document it.

ASTM B564 / ASME SB564

The current forging scope includes UNS N06022. Confirm active edition, grade, heat treatment, mechanical acceptance, and any supplementary examination in the order.

ASME B16.5 / drawing

Define flange geometry, pressure class, facing, bore, gasket interface, and dimensions separately from the corrosion-resistant material specification.

Corrosion test basis

Any corrosion test, acceptance criterion, NACE review, cleaning, or surface requirement must be named by the project; it is not implied by the alloy designation.

Applications and next steps

Connect the requirement to the right workflow.

Mixed-chemistry process system reviews

Chemical reactor and transfer-line connections

Pollution-control and scrubber piping

Aggressive process media flange enquiries

Nickel Alloy Flanges overviewReview the authoritative nickel alloy flanges product-family route.Hastelloy C276 FlangesCompare the benchmark N10276 commercial product route.ASTM B564 GuideReview forging requirements and order information.Chemical ProcessingReview media, corrosion, inspection, and procurement concerns.Request Technical QuotationSend the N06022 flange and process environment.

Buyer questions

Frequently asked questions.

Is UNS N06022 included in ASTM B564?

Yes. The current ASTM B564 forging scope lists N06022. The order should still state edition, condition, dimensions, tests, and supplementary requirements.

Can Hastelloy C22 be substituted for C276 automatically?

No. Compare process chemistry, temperature, contaminants, fabrication, code, corrosion data, and project approvals before any substitution.

Does the alloy name guarantee corrosion performance?

No. Material approval depends on the real chemical environment, concentration, temperature, crevice conditions, flow, contaminants, and project criteria.

What should a C22 flange RFQ include?

Provide UNS grade, material standard, flange form, size, class, facing, bore, dimensions, medium and temperature, inspection, corrosion tests if required, documents, packing, and destination.

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

Hastelloy C22 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.

N06022 selection starts with the complete chemical environment

C22 and C276 should not be merged into one commercial item

Surface and documentation requirements can be service-critical

Define the basis, then document it.

ASTM B564 / ASME SB564

ASME B16.5 / drawing

Corrosion test basis

Connect the requirement to the right workflow.

Frequently asked questions.

Turn this guidance into a controlled request.

Have a Technical Requirement?