Custom Flanges Manufacturing
DEK's custom flanges manufacturing holds sealing faces flat to 0.02 mm, bolt circles to ±0.05 mm and critical dimensions to ±0.005 mm. No MOQ, prototypes in 3–5 days, engineer-reviewed.
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±0.005mm
Critical Tolerance
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3–5 days
Prototype Lead
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6–800 mm
Flange Diameter
Machined Flanges and CNC Fittings to Your Drawing
DEK turns and mills pipe and vessel flanges, vacuum flanges, waveguide flanges, hydraulic adapters, tube fittings and sanitary ferrules from 304/316 stainless, 2205 duplex, brass, 6061 aluminum, carbon steel and titanium. These are sealing parts, so we work to face flatness, sealing-face finish, bolt-circle position and thread class.
Flanges and fittings sit in our custom CNC machined parts catalogue: no MOQ, every drawing engineer-reviewed. Read what a flange is, or our guide on choosing the right flange type while the drawing is open.
Types of Flanges and Fittings We Machine
Pipe, vacuum, waveguide, hydraulic, tube, sanitary and high-purity parts, machined from bar, plate or customer-supplied forged blanks.
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Pipe & Vessel FlangesWeld-neck, slip-on, blind and lap-joint flanges from bar, plate or forgings. -
Vacuum FlangesKF, ISO-K and CF knife-edge flanges for chambers and feedthroughs. -
Waveguide FlangesWaveguide flange machining to UG, CPR and UBR/PBR series. -
Hydraulic AdaptersCNC fittings with SAE ORB, JIC 37° flare, BSPP and NPT ends. -
Tube Fittings & FerrulesTube fittings, ferrules and compression bodies in stainless and brass. -
Sanitary Tri-Clamp FerrulesSanitary tri-clamp ferrules and adapters to ISO 2852 and DIN 32676. -
Ultra-High-Purity FittingsFittings with electropolished bores for gas and semiconductor lines.
Materials, Processes & Tolerances for Flanges
Grades, machining routes, sealing-face tolerances and finishes for custom flanges, adapters, ferrules and fittings, all from one shop.
Design Tips for Custom Flanges and Fittings
Six drawing habits that shorten review, keep sealing faces flat and avoid interpretation errors on flanges and fittings.
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Reference the Standard
Cite ASME B16.5, EN 1092-1, ISO 2861 or MIL-DTL-3922 and dimension only the deviations: faster review, fewer errors.
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Sealing-Face Finish by Function
Ra 0.4 µm for O-rings and metal seals; serrated Ra 3.2–6.3 µm on raised faces for gaskets that need bite.
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CF Knife-Edge Details
State the knife-edge angle and height on the drawing, and ask for the edge to be protected before shipment.
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Dual-Standard Adapters
Give both thread callouts with class on the drawing, for example 1/2-14 NPT to G1/2 ISO 228-1 class A.
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Wall Behind the Raised Face
Keep at least 3 mm between the raised face groove and the bolt circle so the face stays flat under bolt load.
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Welded Flanges and Fittings
When parts will be welded, specify 316L or 304L and ask for a weld prep chamfer to be machined in.
What to Call Out on Your Drawing
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Standard or Drawing
Send a drawing or the standard reference (ASME B16.5, EN 1092-1, ISO 2852) so an engineer can check dimensions and thread callouts by hand.
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Material and Pressure Rating
State the grade, from 304 or 316L to 2205 duplex or titanium grade 2, and the pressure rating the flange or fitting must hold.
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Quantity and Certificates
Give the quantity, from one adapter to a 5,000-piece run, and ask for material and inspection certificates if you need them.
Applications & Industries
DEK flanges and fittings serve oil and gas instrumentation, semiconductor vacuum and gas lines, telecom and radar waveguides, and marine seawater piping.
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Aerospace
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Medical
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Automotive
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Robotics
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Semiconductor
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Electronic
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Telecom
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Drone & UAV
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Energy
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Oil & Gas
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Marine
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Industrial Equipment
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Construction
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Agriculture
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Consumer Products
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Military & Defense
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Mining
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AerospaceNon-flight-critical brackets, cabin hardware and fittings under AS9100D, in 7075 aluminum, Ti-6Al-4V and Inconel 718, with FAI.Learn More -
MedicalInstrument shafts, handles and cannulas in 316L stainless, titanium and PEEK under ISO 13485, with lot traceability as standard.Learn More -
AutomotivePrototype and low-to-mid-volume sensor housings, valve bodies and shafts in aluminum, 4140 and 4340 alloy steel, stainless and brass.Learn More -
RoboticsJoint housings, harmonic drive flanges and gripper fingers in aluminum and hardened steel, with 5-axis milling in one setup.Learn More -
SemiconductorChamber components, wafer handling fixtures and vacuum flanges in 6061 aluminum, 316L, PEEK and Kovar, with burr-free edges.Learn More -
ElectronicConnector bodies, heat sinks, RF shields and precision pins in aluminum, brass and copper, held to ±0.01 mm on contact features.Learn More -
TelecomWaveguide components, filter housings and RF enclosures in aluminum and copper alloys, with silver or nickel plating for conductivity.Learn More -
Drone & UAVMotor mounts, gimbal frames and landing gear fittings in 7075 aluminum, titanium and magnesium to cut weight without losing stiffness.Learn More -
EnergyBattery end plates, busbars, inverter housings and fuel-cell fittings in aluminum, copper and stainless, machined flat and burr-free.Learn More -
Oil & GasValve components, manifold blocks, downhole tool parts and flanges in 4140, 17-4 PH, duplex 2205 and Inconel, with hardness specs.Learn More -
MarinePropeller shafts, pump parts and deck hardware in 316 stainless, bronze and aluminum bronze, chosen first for corrosion resistance.Learn More -
Industrial EquipmentGripper plates, linear guide mounts, cam followers and machine frames in aluminum and steel, with fixtures kept on file for repeats.Learn More -
ConstructionStructural brackets, anchoring hardware and hydraulic fittings in mild steel, alloy steel and aluminum, zinc plated or powder coated.Learn More -
AgricultureGearbox housings, shafts, sprayer nozzle bodies and sensor mounts in cast iron, steel and stainless for abrasion and moisture.Learn More -
Consumer ProductsKnobs, handles, enclosure parts and audio hardware where the machined surface shows, anodized, bead blasted or polished to sample.Learn More -
Military & DefenseOptical mounts, enclosures and accessory rails in aluminum, steel and titanium, with material certification and FAI reports.Learn More -
MiningWear plates, bushings, crusher components and hydraulic fittings in hardened alloy steel, bronze and stainless for dust and vibration.Learn More
Why DEK for Custom Fittings Machining
Odd quantities and odd combinations of standards are normal here, and each one gets the same engineering check.
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No MOQ, Any Quantity
A single adapter is quoted the same way as a 5,000-piece run, and prototypes ship in 3–5 days.
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Thread Callouts Checked
An engineer checks every thread callout by hand at review, and threads are verified with go/no-go gauges.
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Inspected at FAI
Thread gauges, CMM and surface roughness testers are used at FAI, and inspection certificates are provided on request.
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Verified Stainless Stock
Incoming stainless is spectrometer verified, and material certificates are provided on request for each order.
Certified, Engineer-Reviewed Quotes
DEK is ISO 9001:2015, ISO 13485 and AS9100D certified by TÜV. Quotes come back within 6 hours for standard flanges and fittings, after an engineer reviews the drawing.
Certified Flange & Fitting Quality
Every flange and fitting is made under our TÜV-certified quality management system.
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AS9100DAerospace Quality Management System
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ISO 9001:2015Quality Management Standard
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ISO 13485Medical Devices Quality Management
Flange Materials and Finishes
Pick the grade and finish combination for the medium, the pressure and the sealing face of your flange or fitting.
Surface Finishes
Need another grade or finish? Ask our engineers
All MaterialsFlanges & Fittings FAQ
Short answers on standards, waveguide flanges and thread callouts for machined flanges and fittings.
Get a Quote for Custom Flanges Manufacturing
Send a drawing or standard reference, material, quantity and pressure rating. Quotes for standard flanges and fittings come back within 6 hours.
- Engineer review of every drawing
- No MOQ, from a single adapter
- Prototypes in 3–5 days
- Critical dimensions to ±0.005 mm
- Material and inspection certificates on request
Ready to Scale Your Project?
Get started with a stable process and controlled quality. Let's discuss your project.
