Short Excavator CAT313 Tunnel Arm Multipurpose Q355B Material , Excavator Tunnel boom arm
To get our product catalogue
Catalogue ZH excavator boom arm.pdf
The use of tunnel arm
The tunnel arm of the excavator is a shorter arm than the standard arm of the excavator,
which is used for digging, crushing, cleaning, and so on. Short arm, the flexible operation
can be used in tunnel narrow spaces to improve tunnel excavation efficiency.
Advantage of our factory to produce Excavator long reach boom
1. 14000㎡ Workshop with Precision Equipments
2. High-tech R&D Team, Own techinical people more than 15
3. Experienced Workers more than 60 people
4. Customization size ,colour ,support OEM ,ODM
5. Prompt Lead Time 7-20 days
6. Excellent Service
name | main material | warranty(day) |
Boom | Q355B | 180 |
Arm | Q355B | 180 |
Cyliner protector guard | Q355B | 180 |
cylinder | - | 180 |
Linkage assenbly | Q355B | 180 |












