Expansion Shell
1. Material: steel etc
2. Size: cnc machining, per drawing, per sample
3. Surface: polish, anodized, zinc plated, etc
4. Certification: ISO9001, SGS
| Product Name | Manufacturer for Tunneling Expansion Shell Rock Bolts |
| Material | stainless steel, aluminum, steel, copper, brass etc |
| Color | per customized |
| Process | Forging, cnc machining, casting, precision machining |
| Application | forging parts,mining accessories, machinery accessoried, industrial, auto parts,etc |
| Tolerance | can reach to +/-0.01mm |
| Quality control | 100% inspected |
| Surface | Polishing, powder coated, anodized, nickle plating, chromate etc |