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Product Details:
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| Boom Length: | 18 M | Suitable Machine: | 20-22 Ton Class |
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| Maximum Reach: | 17.6 M | Digging Depth: | 12.5 M |
| Bucket Capacity: | 0.6 M³ | Boom Weight: | 5.2 T |
| Material: | Q355B Main, Q690D Boom And Stick Ends | Application: | Custom Excavator Long Reach Boom Arm |
| Brand: | DF | ||
| Highlight: | 18m Long Reach Boom,22 Ton Excavator Arm,12.5m Digging Depth |
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This is the length canal contractors ask for: 17.6 m of reach covers most secondary canals and irrigation channels in one setting, and 12.5 m of depth clears silt that has built up over several seasons.
We build the boom and stick from Q355B with Q690D at the high stress ends, add a 1.9 t counterweight and match the bucket at 0.6 m³ so the cycle stays productive rather than slow.
Talk to our factory engineer on WhatsApp: +86 180 2625 4557 — send your machine model, stick length and working depth, and we return a drawing and quotation within one working day.
| Item | Value |
|---|---|
| Overall boom length | 18 m |
| Carrier class | 20-22 ton class |
| Maximum reach | 17.6 m |
| Maximum digging depth | 12.5 m |
| Bucket | 0.6 m³ |
| Boom weight | 5.2 t |
| Steel | Q355B main, Q690D boom and stick ends |
DEFENG (DF) has manufactured custom excavator attachments for fifteen years in a 3,000 m² workshop in Guangdong, southern China. We build long reach boom arms, standard and heavy duty buckets, and amphibious pontoons for swamp excavators, all to customer drawings rather than to a fixed catalogue.
| Factory capability | Detail |
|---|---|
| Experience | 15 years in custom excavator attachments |
| Workshop area | 3,000 m² with separate cutting, welding, machining and painting bays |
| Welding team | All structural welders hold valid welding qualification certificates |
| Equipment | Automatic welding machines, CNC plasma cutting, boring mill, stress relief and load test bench |
| Monthly output | 10 sets of long reach booms plus buckets and pontoons |
| Main products | Excavator boom arms, buckets, amphibious floating pontoons |
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| Step | What happens | Control |
|---|---|---|
| 1. Drawing | Boom geometry matched to your machine, stick and bucket | 3D model review with the customer |
| 2. Cutting | Q355B and Q690D plate cut on CNC plasma table | Plate certificates kept per set |
| 3. Welding | Certified welders on root passes, automatic welding machines on long seams | Weld map signed off per boom |
| 4. Stress relief | Post-weld heat treatment on the boom and stick | Hardness check after cooling |
| 5. Machining | Boom foot, pin bores and boss faces bored after welding | Bore tolerance +/-0.05 mm |
| 6. Assembly | Hydraulic lines, pins, bushings and cylinder mounts fitted | Full cycle test before painting |
| 7. Painting | Shot blast, primer and two top coats in your colour | Colour matched to your sample |
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| Packing | SINGLE — one boom set per package, wrapped and braced on a steel frame |
| Delivery time | 7-30 days depending on drawing approval and quantity |
| Supply ability | 10 Sets per Month |
| Price | Negotiable, quoted against your machine and working depth |
| Warranty | 12 months on structure and welds |
Get a factory quotation within 24 hours
WhatsApp / WeChat: +86 180 2625 4557
Email: dfsophia2024@163.com
DEFENG (DF) Factory — custom excavator boom arms, buckets and amphibious pontoons
Contact Person: Chen
Tel: +8618026254557