At Handan Haosheng Fasteners Co., Ltd., strength is more than a specification—it is a promise. As a leading manufacturer of high-strength fasteners, Haosheng specializes in the production of hex head bolts, socket head bolts, and heavy-duty nuts engineered for durability and precision. These products meet performance grades of 8.8, 10.9, and 12.9, making them suitable for demanding industries such as construction, machinery, and infrastructure.
The manufacturing journey begins with raw material selection, emphasizing premium steel for optimal mechanical properties. Using multi-station cold heading machines imported from Taiwan Zhenyao and Ningbo Sijin, each bolt is forged with accuracy and uniformity. Heat treatment and spheroidizing annealing are conducted in advanced mesh belt furnaces to enhance strength, toughness, and fatigue resistance.
Haosheng implements strict dimensional and mechanical inspections throughout the process. From thread rolling to surface treatment (including black oxide, zinc plating, and hot-dip galvanizing), every step is monitored. With over 2,000 tons of monthly output, Haosheng meets large-scale demand without compromising quality.
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