Common Grades
- ASTM A182 F304 / F304L
- ASTM A182 F316 / F316L
- Duplex F51 / F60
- Super duplex F53 / F55 by review
Stainless and duplex flange sourcing
Stainless Steel Forged Flanges
This page targets stainless steel forged flange manufacturer China, A182 F304 flange supplier, A182 F316 flange, duplex forged flange and stainless weld neck flange searches.
Baolongda reviews stainless, duplex and super duplex flange RFQs by grade, standard, corrosion service, PMI route, pressure class, facing, bore and project inspection requirements.
Stainless / Duplex RFQ Scope
Stainless and duplex flange buyers often search by grade and inspection route, especially when PMI, corrosion resistance or project approval matters.
Flange Types
- Weld neck flange
- Blind flange
- Long weld neck flange
- Custom forged flange
Review Points
- PMI requirement
- Corrosion service
- MTC and heat record
- Third-party inspection
| RFQ data | Grade, standard, flange type, NPS/DN, class or PN, facing, bore, quantity, service notes and PMI / inspection requirement. |
|---|---|
| Related materials | ASTM A105 flanges for carbon steel service and A350 LF2 flanges for low-temperature carbon steel service. |
| Inspection | MTC EN 10204 3.1, PMI, heat treatment or solution treatment records when applicable, UT/MT/PT, dimensional inspection and third-party inspection. |
| Related pages | ASME B16.5 flanges, long weld neck flanges, forged flange hub. |
Stainless Forged Flange FAQ
Buyer questions for stainless, duplex and corrosion-service forged flange RFQs.
Which stainless grades can be reviewed?
Common RFQs include A182 F304/F304L, F316/F316L, duplex F51/F60 and super duplex grades by project review.
What service details should be included?
Include corrosion service notes, sour-service or NACE requirements if applicable, temperature, pressure class, facing, bore and quantity.
What inspection is common for stainless flanges?
Typical requests include MTC 3.1, PMI, solution treatment records where applicable, dimensional inspection, NDT and third-party inspection.
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