Verified Global Compliance & Certifications
Hebei Longze is the premier manufacturer of heavy-duty industrial fastening systems. We translate complex mechanical standards into absolute structural integrity for global automated assembly.
Located in the heart of China's fastener manufacturing hub, Hebei Longze operates a fully integrated production facility. From cold-forging and thread rolling to in-house surface treatments, we control every variable of the metallurgical process.
Our V-SYSTEM architecture synchronizes global DIN/ISO/ASME parameters directly to our production floor, completely eliminating dimensional discrepancies before they happen.
Precision tolerance control (+0.1/-0mm) and automated optical sorting guarantee zero-jamming performance on high-speed robotic assembly lines.
In-house NSS Salt Spray testing. Delivering Geomet, Dacromet, and HDG coatings achieving 1000h+ corrosion resistance for offshore environments.
Mandatory 200°C+ hydrogen embrittlement baking within 4 hours for all 10.9 and 12.9 class high-tensile fasteners.
Browse our complete inventory matrix. Hex bolts, nuts, washers, and structural components.
View Catalog Directory →Access our technical whitepapers, dimensional matrices, and equivalent mappings.
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