High Quality Excavator Tunnel Arm for ZX210, PC138, 320D Models
Tunnel Boom Advantages
- Thicker upper and lower cover plates for enhanced durability
- Iron sand filling to reduce vibration during operation
- Enlarged cylinders to prevent damage from excessive vibration
- Stop valves prevent oil leakage during bucket replacement
- Multi-layer welding of pipe connectors to minimize oil leakage risk
ZHONGHE Manufacturing Advantages
- Modern design and styling
- Professional engineering team
- Rigorous quality control standards
- Competitive pricing
- CE certifiion compliance
- Responsive customer support
- Patented technology
- Extensive production experience
Our company employs over 15 technical professionals including designers, engineers, and sales specialists. Our workshop features more than 30 skilled workers organized into material, machining, and assembly groups. Each group is supervised by a team leader to ensure quality workmanship and seamless workflow between production stages. We maintain a strong, united team dedied to continuous development and excellence.
Frequently Asked Questions
How can we guarantee the quality?
Our factory has an independent quality department. Each product undergoes rigorous testing and can only leave the factory after passing qualifiion standards. We perform final inspections at least 5 times before shipment.
What products can you purchase from us?
Excavator long reach boom arms, telescopic arms, pile driving arms, excavator grapples, and rock buckets.
What are the payment requirements?
30% deposit when placing an order, with the remaining balance due before factory departure.
How long does shipping take after ordering?
7 days for 1-6 sets, 10 days for 7-12 sets, and one month for 12-40 sets.
How are product quotations determined?
Quotations are based on excavator model, arm length specifiions, and specific working condition requirements.
Do you offer OEM services?
OEM services are available upon request, but require proper brand authorization.
What is the manufacturing process for excavator arms?
Design → Typesetting → Blanking/Cutting → Parts Machining → Beveling → Assembly → Welding → Pipe Layout → Pipe Welding → Grinding/Sandblasting → Painting → Final Assembly → Quality Inspection → Packaging.
Can I customize the boom arm color?
Colors can be customized according to user requirements, typically matching the host excavator's color scheme.