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Product Details:
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| Boom Length: | 28 M | Suitable Machine: | 45 Ton Class |
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| Maximum Reach: | 27.6 M | Digging Depth: | - |
| Bucket Capacity: | Crusher 2.0 T | Boom Weight: | 14.8 T |
| Material: | Q690D Main Sections | Application: | Custom Excavator Long Reach Boom Arm |
| Brand: | DF | ||
| Highlight: | 28m High Reach Boom,45 Ton Demolition Boom,Telescopic Insert Boom |
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Beyond 26 m we build the boom in three pieces with a telescopic insert, so the arm can travel on a standard trailer and be extended on site with the machine's own crane. Working height reaches 28 m.
The insert joint is the critical detail: we machine the mating faces, use fitted pins rather than bolts alone, and record the joint clearance in the test report that ships with the boom.
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 | 28 m |
| Carrier class | 45 ton class |
| Maximum reach | 27.6 m |
| Maximum digging depth | - |
| Bucket | crusher 2.0 t |
| Boom weight | 14.8 t |
| Steel | Q690D main sections |
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