M6 - M20 Casting Iron Expansion Shell Rock Bolt For Railway Bridge Tunnel
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Detailed Product Description
Expansion Shell For Railway Bridge Tunnel
1. Material: steel etc 2. Size: cnc machining, per drawing, per sample 3. Surface: polish, anodized, zinc plated, etc 4. Certification: ISO9001, SGS |
Product Tags: Railway Expansion Shell Rock Bolt Casting Iron Expansion Shell Rock Bolt Bridge M20 Expansion Bolt |
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