+86 29 8881 0979 Sales@dolphmicrowave.com
Precision Microwave & RF Components Contact Us

+86 29 8881 0979

Contact Us

We machine, bend and braze in-house since 2001

Custom Waveguide Bend Manufacturer

Most waveguide bend manufacturers ask for a part number. We’d rather see your drawing. Tell us the frequency range, waveguide size, what plane the bend sits in, the angle you need, and which flanges bolt to your run. We’ll machine, bend, braze and test it right here in our own shop — we’ve been doing it since 2001.

E-plane, H-plane and miter configurations
30°, 45°, 60° and 90° bend angles
48 published models — WR2300 down to WR28
Aluminum, brass and copper — you pick
Email Your RFQ View Published Bend Models
Double-ridged waveguide E-plane and H-plane bends manufactured by Dolph Microwave
Double-ridged waveguide bends from our standard line. Custom angles, flanges and materials are quoted per order.
Our standard line — 48 models in the table

Published bend models from 0.32 to 40 GHz

Two standard families we build regularly. Custom angles, sizes, flanges and materials are confirmed against your drawing before we quote.

Rectangular waveguide miter bends

  • 0.32 to 40 GHzPublished model table span
  • WR2300 to WR28Waveguide sizes — 24 E-plane and 24 H-plane models
  • 1.1:1 to 1.15:1VSWR listed across the table
  • 0.15 to 0.25 dBInsertion loss in the published table
  • UDR and PDRFlange designations, cover and grooved

Double-ridged waveguide bends

  • 0.84 to 40 GHzWRD84 to WRD180 coverage
  • WEB and WHBE-plane and H-plane ordering codes
  • 45°, 60°, 90°Published bend angles — 90° is the default
  • Max 1.25:1Published VSWR limit
  • Cover or groovedP and M flange options, Al or brass body
Published models

48 standard miter bends, 0.32 to 40 GHz

E-plane models below. H-plane versions share the same DH numbers at 20% bandwidth. Every model ships with a datasheet and STEP file.

Model
Freq. (GHz)
WG size
VSWR
IL (dB)
A*B (mm)
DH-3WTEB
0.32–0.49
WR2300
1.15:1
0.15
220*220
DH-6WTEB
0.49–0.75
WR1500
1.1:1
0.15
150*150
DH-12WTEB
0.96–1.46
WR770
1.1:1
0.15
110*110
DH-22WTEB
1.72–2.61
WR430
1.1:1
0.15
70*70
DH-40WTEB
3.22–4.90
WR229
1.1:1
0.2
45*45
DH-100WTEB
8.20–12.40
WR90
1.1:1
0.2
25*25
DH-180WTEB
14.5–22.0
WR51
1.1:1
0.25
20*20
DH-320WTEB
26.5–40.0
WR28
1.1:1
0.25
12*12

8 of 48 published models shown. All bodies Al/Cu, chromate inside, painted outside, UDR/PDR flanges. Full table on the product page

Space-qualified waveguide components manufactured and tested by Dolph Microwave
Bends and assemblies also ship in space-qualified builds. Space-qualified line
How ordering works

One part number tells us the whole build

Published example: DH-650DR WEB_WHB 50*50 P M A. Send us yours in the same format, or just send the drawing.

DHDolph Microwave
650DRWRD650 double-ridged size
WEB / WHBE-plane bend / H-plane bend, 90° default
50*50A*B dimensions in millimetres
P / MCover flange / grooved flange
AAluminum body — brass available
Waveguide bends datasheetPDF — model range and ordering Double-ridged flange designationsPDF — flange drawings and dimensions
Custom work

Tell us where the run has to turn. We’ll build the bend.

Plane, angle, size, flange and material are the decisions that matter. We confirm all of them against your drawing before production starts.

01

Miter bends — E-plane and H-plane

Standard 90° with 30°, 45° and 60° on order. 6061 aluminum is the standard body; copper and brass where electrical performance matters.

Review miter bend models
02

Double-ridged bends

WRD84 through WRD180, 0.84 to 40 GHz in one component family. Cover or grooved flanges, 45° to 90°, aluminum or brass.

Review double-ridged models
03

Multi-bend and complex runs

Several direction changes in one constant-cross-section assembly — 1.72 to 110 GHz in WR-10 to WR-430, VSWR as low as 1.06:1.

View custom assembly capability
04

Hybrid and preformed flexible bends

Flex-rigid hybrid E and H bends from 1.13 to 110 GHz in WR-10 to WR-650, plus preformed flexible-twist bends with a helically wound core.

Review flexible waveguide options
How we define the build

From your specs to a finished bend

A drawing, STEP file or sketch is enough to start. The quote lists the exact configuration, material, finish and RF targets — plus the test data you get with delivery.

Rectangular waveguide miter bend in aluminum with chromate finish, from the Dolph Microwave standard line
Miter bend from the published WR2300–WR28 range. Chromate conversion inside, grey anticorrosion paint outside.
Custom multi-bend waveguide assembly with constant cross-section built by Dolph Microwave
Multi-bend assembly built to a customer run — several direction changes in one brazed component.

Have a drawing or a part number already?

Email it over with your quantity and target date. You get back a quote that lists the exact configuration, material, finish and RF targets.

Email Your Drawing Double-Ridged Models
How we handle your order

What happens after you send us your specs

We check everything before we make anything. It saves drawing revisions and surprises at install.

01

Fix the requirements

Frequency range, waveguide size, bend plane and angle, flange, material, finish, quantity and documents. Confirmed in writing before anything else.

02

RF and mechanical check

Bend plane, angle, cross-section through the bend, flange clocking, leg lengths and the total envelope — reviewed together, not as separate pieces.

03

Drawing and acceptance criteria

We confirm the drawing or STEP file, VSWR target, insertion loss limit, surface finish and which checks you want reported before shipment.

04

Build, braze, inspect, test

Machining, bending and brazing happen in-house. We run the agreed dimensional and RF checks and ship the test data with the parts.

25+ Years building waveguide components — founded 2001
48 Published miter bend models, WR2300 to WR28
110 GHz Top of the multi-bend and hybrid flex-rigid lines
100 GHz RF vector and scalar measurement capability
Hybrid flex-rigid waveguide assembly with integrated bend sections from Dolph Microwave
Hybrid flex-rigid bend assembly — rigid sections with a flexible core to absorb vibration and misalignment.
Materials, flanges and finish

The details that decide whether a bend fits

Most problems with bends show up at the flanges and in the envelope. Tell us these up front and the first drawing is usually right.

  • Bend plane, angle and leg lengths — and the total A*B envelope
  • Flange type, bolt pattern and clocking on both ends
  • 6061 aluminum as standard; copper or brass where loss matters
  • Chromate or iridite inside; grey or black anticorrosion paint outside
  • Silver or gold plating on request to reduce microwave losses
Our measurement services and lab capability
What to send us

Send us this. We’ll send you a quote.

The more complete the RFQ, the faster the quote — and the fewer drawing revisions.

Item
Send
Why we ask
Operating band
Minimum and maximum frequency
Picks the waveguide size and which bend family applies.
Waveguide size
WR or WRD designation
Locks the cross-section the bend must keep constant.
Bend geometry
E-plane or H-plane, angle, leg lengths and maximum envelope
Decides whether a miter, swept or multi-bend build is right.
Flanges
UDR, PDR, cover or grooved — plus clocking and bolt pattern
So both ends mate with your existing run.
Material and finish
Aluminum, brass or copper; inside and outside finish
Affects loss, weight, corrosion protection and price.
Commercial scope
Quantity, target date, documents and acceptance criteria
So the quote and delivery scope are clear — no guessing.

Have a drawing, STEP file, sketch or a photo of the part you want replaced? Send it. We quote drop-in replacements as well.

Runs with your bends

Parts that usually go with a bend

Standard waveguide category Double-ridged waveguide category Custom waveguide assemblies All waveguide components
About us

Who we are and what we stand behind

Before you place an order — here’s what you might want to know about us.

Established manufacturer

Founded in 2001; the state-owned 806 Factory is our predecessor. We design and make waveguide components and antenna feed systems in Xi’an, China.

View company profile

Quality system

ISO 9001:2015 certified, with a written Quality Manual and Quality Procedure covering design, manufacture and sale.

Review certificate document

Factory and lab

CNC milling and turning, bending, brazing and assembly in-house. Environmental lab runs temperature-shock and functional-vibration tests.

View manufacturing capability

One-year warranty

Every product carries a one-year warranty against defects in material and workmanship, from the date of delivery.

Review published warranty
Technical questions

Custom Bend FAQ

Which bend angles can you make?
90° is standard. Published options include 45° and 60°, and 30° is available on order for miter bends. For anything else, send the drawing — the angle is confirmed at quote.
Do you make both E-plane and H-plane bends?
Yes. Ordering uses WEB for E-plane and WHB for H-plane on double-ridged models; rectangular miter and multi-bend lines also come in both planes. Custom E-bend/H-bend combinations are quoted per drawing.
What frequency range do your bends cover?
Published miter models run 0.32 to 40 GHz — 48 models from WR2300 to WR28. Double-ridged bends cover 0.84 to 40 GHz (WRD84 to WRD180). Multi-bend and hybrid flex-rigid assemblies reach 110 GHz.
What VSWR can we expect?
Published miter models list 1.1:1 to 1.15:1 across the table, with typical values better than 1.05 and as low as 1.03:1 over a 5% bandwidth. Double-ridged models list a maximum of 1.25:1. Multi-bend assemblies publish VSWR as low as 1.06:1.
Which flanges and materials are available?
UDR and PDR flanges on miter models; cover (P) and grooved (M) on double-ridged. Bodies are aluminum, brass or copper; chromate or iridite inside, anticorrosion paint outside, with silver or gold plating on request.
What should our RFQ include?
Operating frequency range, WR or WRD size, bend plane and angle, A*B dimensions and leg lengths, flange type, material and finish, quantity — and a drawing or sketch if you have one.
Preformed flexible waveguide bend with protective jacket from Dolph Microwave
Preformed flexible bend — for runs that also need vibration isolation.
Keep reading

Technical articles on bends and assemblies

Waveguide corner, bend and twist component drawings

What Is Waveguide: Corners, Bends, and Twists

Read article
Specialized waveguide bends and twists for rigid and double-ridged assemblies

Specialized Bends and Twists for Rigid, Flexible and Double-Ridged

Read article
Waveguide adapter collection used in low-loss assemblies

How to Reduce Insertion Loss in Waveguide Assemblies

Read article
Waveguide assemblies under RF test

How to Test Waveguide Assemblies: 3 Effective Methods

Read article
Ready to get a quote?

Send us your specs. We’ll send back a quote with a buildable design.

Email your frequency range, waveguide size, bend plane, angle, flange, material, quantity and whatever drawing or sketch you have. We review everything before we quote — no point quoting what won’t work.

Send RFQ by Email View Published Bend Models
sales@dolphmicrowave.com +86 29 8881 0979
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DOLPH-MW WARRANTY

Dolph Microwave warrants our products to be free from defective material and workmanship for a period of one year from the date of delivery. All defective parts will be replaced and repair work required by normal use will be performed, without charge, within this one year period. This warranty shall be exclusive and in lieu of all other warranties expressed or implied.

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CONTACT DOLPH

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Tel/Fax: (+86) 29-8881-0979
E-mail: Sales@dolphmicrowave.com

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