Avoid Pitfalls:

• Head-To-Shank Concentricity: We prevent belt wobbling by ensuring perfect alignment between the flat head and the bolt shank during our multi-station cold-forming process.

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• Square Neck Precision: Poorly formed square necks cause the bolt to spin during nut tightening. Longze bolts feature sharp-edged square necks for a secure, non-slip lock into the belt/bucket.

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• Hydrogen Embrittlement baking: For Grade 8.8 galvanized elevator bolts, we implement a strict de-embrittlement baking process to ensure zero brittle failure under high-tension loads.

Perfect Fit Assembly:

• Flat-Head Flush Mount: Designed to sit perfectly level with the conveyor belt, reducing friction with the pulley and extending the life of your belt system.

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• Full Set Availability: We provide matching Large Fender Washers Và Nylon Insert Lock Nuts to ensure the entire assembly remains vibration-resistant.

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Quality Control & Logistics:

• ISO 9001 Certified: 5-step QC including belt-pull simulation tests and thread gauge verification.

• Sea-Worthy Packaging: Reinforced moisture-proof boxes + Fumigation-Free Pallets for safe transport from our Yongnian hub to global ports.

• Q: Can you customize the head diameter for specific belts? A: Yes, we can produce non-standard head diameters up to 40mm for specialized heavy-duty conveyor systems.

• Q: Do you offer MTC (Mill Test Certificates)? A: Yes, we provide full chemical and physical MTCs for every batch, including tensile and hardness data.