Non-standard flange to drawing means we produce customized non-standard flanges completely based on your 2D/3D drawings (PDF, DWG, STEP, IGS). We accept special sizes, unusual pressure levels, special face types, multi-bolt holes, large diameters, small bores, reducer structures and integrated designs.Our non-standard flanges are widely used in petrochemical, offshore, power, shipbuilding, machinery and special engineering projects where standard flanges cannot fit.
Production Details
1.Drawing review and technical confirmation
2.Raw material inspection and spectral test
3.Forging / ring rolling / blank making
4.Heat treatment as required
5.CNC precision machining
6.100% dimensional inspection
7.NDT and pressure test
8.Surface treatment: anti-rust oil, passivation, painting
9.Marking: drawing number, material, heat number
10.Packaging and delivery
Product Feature and Application
Key Features
- 100% manufactured according to your drawing
- High precision CNC machining
- High strength forged structure
- Special design for limited installation space
- Reliable sealing and long service life
- Full material traceability
- Accept small batch & mass production
Typical Applications
- Non-standard pipeline connection
- Oil & gas wellhead and manifold
- Offshore platform and marine engineering
- Petrochemical and refinery equipment
- Power station boiler and special piping
- Large engineering and special equipment
- Mechanical equipment custom connection
| Service | Non-standard Flange to Customer Drawing |
| Standards | Non-standard, customized |
| Pressure | PN6–PN420, 150LB–2500LB, 5K–350K, custom pressure |
| Diameter | DN10–DN2000, 1/2″–78″, custom size |
| Types | Weld neck, slip-on, blind, threaded, lap joint, reducer, large diameter, special shape |
| Face type | RF, FF, RTJ, TG, V, male-female, special facing |
| Materials | Carbon steel, alloy steel, stainless steel, duplex steel, Inconel, Monel, Hastelloy |
| Drawing format | PDF, DWG, DXF, STEP, IGS, SolidWorks |
| Certification | EN 10204 3.1, MTC, ISO 9001, API, DNV, ABS |
| Testing | Dimensional, UT, MT, hydrostatic test |
Production Display
Our factory is equipped with large forging presses, heavy-duty CNC machining centers, large-diameter processing equipment and complete testing labs. We support third-party inspection by SGS, BV, TÜV, DNV, ABS.
Product Transport Package
- Surface: Anti-corrosion oil, varnish, black paint, passivation
- Packaging: Export wooden case, steel pallet, reinforced package
- Label: Drawing No., part name, material, heat No., quantity
- Documents: Packing list, MTC, test report, certificate
- Transportation: Sea, land, air global delivery
After-sales Service
- Professional drawing review and optimization
- Customized technical solution
- Timely production progress feedback
- Fast after-sales response
- Quality re-inspection guarantee
- Stable long-term supply
Why Choose Us
- 19 years of non-standard flange experience
- Strong forging & CNC machining capacity
- Strict quality control system
- Flexible production for small orders
- Competitive factory price
- Professional global service
Send us your drawing for non-standard flange quotation and solution.
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