Material identity
Stainless Steel 304 / ASTM A403 WP304 route for wrought fittings
Alloy flanges and fittings
Stainless Steel 304 Pipe Fittings Manufacturer & Exporter
This commercial route is for Stainless Steel 304 pipe fitting enquiries that must distinguish grade, fitting construction, and inspection class before price comparison. Define elbow, tee, reducer, cap, stub end, or forged fitting form together with NPS or DN, schedule, end preparation, ASTM and dimensional standard, quantity, test documents, and delivery destination.
Technical snapshot
Key details for your specification.
| Nominal size | DN | Product | Standard | RFQ review |
|---|---|---|---|---|
| 1/2" | DN 15 | Butt-weld fitting | ASME B16.9 | |
| 3/4" | DN 20 | Butt-weld fitting | ASME B16.9 | |
| 1" | DN 25 | Butt-weld fitting | ASME B16.9 | |
| 1-1/4" | DN 32 | Butt-weld fitting | ASME B16.9 | |
| 1-1/2" | DN 40 | Butt-weld fitting | ASME B16.9 | |
| 2" | DN 50 | Butt-weld fitting | ASME B16.9 | |
| 2-1/2" | DN 65 | Butt-weld fitting | ASME B16.9 | |
| 3" | DN 80 | Butt-weld fitting | ASME B16.9 | |
| 4" | DN 100 | Butt-weld fitting | ASME B16.9 | |
| 5" | DN 125 | Butt-weld fitting | ASME B16.9 | |
| 6" | DN 150 | Butt-weld fitting | ASME B16.9 | |
| 8" | DN 200 | Butt-weld fitting | ASME B16.9 | |
| 10" | DN 250 | Butt-weld fitting | ASME B16.9 | |
| 12" | DN 300 | Butt-weld fitting | ASME B16.9 | |
| 14" | DN 350 | Butt-weld fitting | ASME B16.9 | |
| 16" | DN 400 | Butt-weld fitting | ASME B16.9 | |
| 18" | DN 450 | Butt-weld fitting | ASME B16.9 | |
| 20" | DN 500 | Butt-weld fitting | ASME B16.9 | |
| 22" | DN 550 | Butt-weld fitting | ASME B16.9 | |
| 24" | DN 600 | Butt-weld fitting | ASME B16.9 | |
| 26" | DN 650 | Butt-weld fitting | ASME B16.9 | |
| 28" | DN 700 | Butt-weld fitting | ASME B16.9 | |
| 30" | DN 750 | Butt-weld fitting | ASME B16.9 | |
| 32" | DN 800 | Butt-weld fitting | ASME B16.9 | |
| 34" | DN 850 | Butt-weld fitting | ASME B16.9 | |
| 36" | DN 900 | Butt-weld fitting | ASME B16.9 | |
| 38" | DN 950 | Butt-weld fitting | ASME B16.9 | |
| 40" | DN 1000 | Butt-weld fitting | ASME B16.9 | |
| 42" | DN 1050 | Butt-weld fitting | ASME B16.9 | |
| 44" | DN 1100 | Butt-weld fitting | ASME B16.9 | |
| 46" | DN 1150 | Butt-weld fitting | ASME B16.9 | |
| 48" | DN 1200 | Butt-weld fitting | ASME B16.9 |
Engineering discussion
Context before component selection.
Construction class matters in an A403 enquiry
ASTM A403 distinguishes fitting classes associated with seamless or welded construction and NDE. A complete WP304 request therefore includes the class designation, fitting geometry, wall schedule, end preparation, and any supplementary examination instead of asking only for an SS 304 elbow or tee.
Reducers and tees need complete branch geometry
For concentric or eccentric reducers, state both end sizes, schedules, orientation requirements, and end preparation. For equal or reducing tees, identify run and branch sizes and walls. These details affect manufacturability, dimensions, inspection, packing, and commercial comparison.
Keep forged and butt-weld fittings on separate routes
A butt-weld elbow and a socket-weld forged fitting do not share the same dimensional or pressure-class logic. Splitting them into controlled line items prevents the schedule, class, material standard, marking, and inspection requirements from being mixed during quotation and release.
Standards and release
Define the basis, then document it.
ASTM A403 / ASME SA403
State WP304 and the applicable seamless or welded fitting class. The construction and NDE class is part of the ordered product identity, not a documentation afterthought.
ASME B16.9 / MSS route
Define the dimensional basis for butt-weld fittings and state NPS, schedule or wall, geometry, end preparation, tolerance, and any drawing control.
Forged fittings
Socket-weld and threaded forged fittings follow a separate material, pressure-class, and dimensional route and should be listed as distinct line items.
Applications and next steps
Connect the requirement to the right workflow.
General process piping spools
Industrial utility systems
Fabricated equipment connections
Maintenance fitting packages
Stainless Steel Pipe Fittings overviewReview the authoritative stainless steel pipe fittings product-family route.Stainless Steel 304L FittingsCompare the separately controlled WP304L enquiry route.ASME B16.9 Fittings GuideReview butt-weld geometry, dimensions, tolerances, and buying inputs.Material Traceability GuideConnect heat identity to fitting marking and release documents.Request Technical QuotationSend the complete SS 304 fitting schedule to RTI.
Buyer questions
Frequently asked questions.
Technical quotation
Turn this guidance into a controlled request.
Capture the material, product form, dimensions, standard, inspection, documentation, packing, and destination requirements for review.
