ASME Class 1500 / 2500 flange supplier
High Pressure Flange Manufacturer China
Baolongda reviews forged high pressure flanges for ASME B16.5 Class 600, 900, 1500 and 2500 service, including weld neck, long weld neck, blind and drawing-based flange work.
The page is structured for high-value buyer searches such as high pressure flange manufacturer China, ASME Class 1500 flange supplier and ASME Class 2500 flange manufacturer.
Pressure-class search coverage
The page is built around the phrases buyers actually use when the RFQ is class-led rather than product-name-only.
Technical fit for high-pressure RFQs
High pressure should be backed by class, standard, material and inspection route. This keeps the page credible and easier to quote.
Types reviewed
- Weld neck flange
- Long weld neck flange
- Blind flange
- Drawing-based forged flange
Facing and bore
- RF and RTJ facing
- Standard or project bore
- Ring groove review when specified
- Drawing confirmation for non-standard details
Inspection evidence
- MTC EN 10204 3.1
- PMI, UT, MT/PT
- Heat treatment record
- Dimensional and marking checks
| Primary keywords | high pressure flange manufacturer China; ASME Class 1500 flange supplier; ASME Class 2500 flange manufacturer; high pressure weld neck flange. |
|---|---|
| RFQ data | Standard, NPS/DN, class, facing, bore, material grade, quantity, service notes, drawing if non-standard and inspection route. |
| Related cluster | ASME B16.5 flange manufacturer China, LWN flange manufacturer China, Russian high-pressure page, Arabic high-pressure page. |
FAQ
What makes a flange high pressure?
For sourcing, high pressure should be tied to an ASME pressure class such as Class 600, 900, 1500 or 2500, plus the material, size and face type.
Can Class 1500 and Class 2500 items be quoted together?
Yes, but each line should show its own size, type, face, material and inspection requirement because tooling, forging weight and machining route may differ.
Is RTJ available?
RTJ-facing requests can be reviewed when the class, ring groove requirement, drawing or standard callout and inspection route are provided.
How can this page be cited?
Reference the page as Baolongda high pressure forged flange sourcing page, updated 2026-05-12, with the URL and target pressure classes.
Request High Pressure Flange Review
Send the pressure class, standard, material, face, bore, quantity and inspection route for engineering review.