Finished machined alloy flanges arranged for product review

Alloy flanges and fittings

Stainless Steel Flanges Manufacturer & Exporter

Name: Stainless Steel Flanges
Brand: Raymond Tube Industries

Raymond Tube Industries manufactures and supplies stainless steel flanges for process, utility, chemical, marine, energy, and project piping requirements. Buyers can define 304L, 316L, 904L, 254 SMO, or another approved grade together with the flange form, NPS or DN, pressure class, facing, bore, dimensional standard, inspection scope, documentation, packing, and destination. Final grade selection and product acceptance remain governed by the approved purchase specification.

Technical snapshot

Key details for your specification.

Material family

Austenitic and high-alloy stainless steel grades selected by project specification

Principal grade routes

304 / 304L, 316 / 316L, 904L, and 254 SMO where specified

Flange forms

Weld neck, slip-on, blind, socket weld, threaded, lap joint, long weld neck, orifice, and drawing-based forms

Dimensional basis

ASME B16.5, ASME B16.47, ASME B16.36, or an approved project drawing as applicable

Class and facing

State pressure class, RF or RTJ facing, gasket basis, bore, and mating pipe schedule

Inspection

PMI, dimensional inspection, TPI, NDE, or project-specific checks where requested

Documentation

MTC / EN 10204 3.1, heat traceability, marking, inspection records, and release dossier as agreed

Quotation input

Grade, flange form, size, class, facing, bore, quantity, standards, tests, documents, and destination

Engineering discussion

Context before component selection.

Choose the grade before comparing flange offers

304L, 316L, 904L, and 254 SMO are not interchangeable purchasing labels. The project environment, corrosion mechanism, fabrication route, piping class, and approved material specification determine which grade enters the RFQ.

Flange form controls the connection

A weld neck flange requires bore and schedule alignment; a blind flange defines a closure; slip-on, socket-weld, threaded, lap-joint, long-weld-neck, and orifice forms introduce different dimensional and inspection questions. State the exact form on each line item.

Class, facing, and bore remain separate decisions

The material grade does not determine pressure class, RF or RTJ facing, gasket interface, bore, or surface finish. These values must come from the piping class, dimensional standard, or approved drawing.

Inspection evidence should follow the risk

Define PMI coverage, dimensional records, NDE, TPI witness points, marking, and MTC requirements before order release. Lot-specific chemistry and mechanical results must be checked against the supplied certificate.

Export release starts at the RFQ

Face protection, segregation, case or pallet requirements, shipping marks, document format, destination, and inspection release should be agreed with the component configuration rather than added after manufacture.

Standards and release

Define the basis, then document it.

ASTM / ASME material route

Confirm the material-product specification and grade for the ordered stainless steel forging rather than applying one standard to every stainless grade.

ASME B16.5

Use for applicable NPS 1/2 through NPS 24 flange dimensions, classes, facings, tolerances, and marking requirements.

ASME B16.47

Use the applicable series and project basis when a large-diameter flange falls outside the B16.5 scope.

Project specification

Piping class, drawing revision, gasket system, surface finish, testing, and acceptance criteria remain order-specific controls.

Related application

Data center cooling systems

Review how water chemistry, cooling architecture, equipment interfaces, inspection, and documentation shape stainless and duplex component RFQs.

Open engineering hub

Location engineeringAshburn, Virginia, USA Location engineeringDublin, Ireland Location engineeringAmsterdam, Netherlands Location engineeringCouncil Bluffs, Iowa, USA Location engineeringSan Jose, California, USA

Applications and next steps

Connect the requirement to the right workflow.

Process and utility piping

Petrochemical and refinery systems

Chemical-processing equipment

Marine and coastal facilities

Water and desalination plants

Food, pharmaceutical, and clean-process utilities

Heat exchanger and vessel connections

Maintenance and shutdown replacement packages

Stainless Steel 304L FlangesDefine a controlled 304L flange requirement.Stainless Steel 316L FlangesReview ASTM, class, facing, and quality controls for 316L.Stainless Steel 904L FlangesReview a high-alloy stainless flange route.254 SMO FlangesReview chloride-service flange procurement inputs.ASME B16.5 Flange GuideReview flange dimensions, classes, and facing context.Quality & TraceabilityPlan PMI, MTC, inspection, and release evidence.Dubai Investments ParkReview fabrication, maintenance, and warehouse procurement context in Dubai.Ras Al Khor Industrial AreaReview workshop and industrial-trading flange requirements.Stainless Steel Pipe FittingsPair flange and fitting requirements within one material family.Request Technical QuotationSend the complete stainless steel flange specification.

Buyer questions

Frequently asked questions.

Which stainless steel grades can be specified for flange enquiries?

Common RTI enquiry routes include 304 / 304L, 316 / 316L, 904L, and 254 SMO. The final grade must match the purchase specification and service review.

Which dimensional standard applies to stainless steel flanges?

ASME B16.5 is a common route for applicable sizes, while ASME B16.47, ASME B16.36, or a project drawing may apply to other configurations.

Which stainless steel flange forms can be included in an RFQ?

State weld neck, slip-on, blind, socket weld, threaded, lap joint, long weld neck, orifice, RTJ, or a drawing-based form as required.

Should RF or RTJ facing be stated separately?

Yes. Facing, pressure class, gasket basis, surface finish, bore, and mating pipe details should be explicit in the flange request.

Can PMI and third-party inspection be requested?

Yes. Define PMI scope, TPI agency or witness points, dimensional checks, and required records before quotation and order release.

What documentation should accompany stainless steel flanges?

State the required MTC or EN 10204 certificate type, heat traceability, inspection reports, marking records, packing list, and release documents.

What information produces a complete stainless steel flange quotation?

Provide grade, product form, size, class, facing, bore or schedule, standards, quantity, testing, 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.

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