DIN931-1 ISO EN 4014 Hexagon Head Bolts Partially Threaded Blackened Carbon Steel/Alloy Steel Class 8.8 10.9 12.9

Advantages:

1. Corrosion Resistance: The blackening process creates a dense oxide film on the bolt surface, providing excellent corrosion resistance and preventing rusting in damp or corrosive environments.

2. Wear Resistance: Blackened bolts exhibit increased surface hardness, improving their wear resistance and enabling them to maintain good performance in frequently rubbed environments.

3. Aesthetic Appeal: The blackened surface of the bolts gives them a unique and attractive appearance, making them suitable for use in applications where aesthetics are important.

4. Cost-Effectiveness: Blackening is a cost-efficient surface treatment method, offering better value for money compared to other surface treatments such as zinc plating or painting.

Characteristics:

1. Uniformity: The blackened surface of the bolts is evenly colored, with no significant color differences or spots, ensuring an overall aesthetic appeal.

2. Stability: The oxide film formed during blackening is stable and does not easily peel off or discolor, guaranteeing the durability of the bolts.

3. Environmental Friendliness: The blackening process does not generate harmful substances and meets environmental protection requirements.

Applications:

DIN 931-1 blackened bolts are widely used in various fields such as mechanical equipment, architectural structures, automotive manufacturing, and more. They are particularly common in applications where corrosion resistance, wear resistance, and aesthetics are critical. For example, in chemical equipment, bolts with excellent corrosion resistance are needed due to the corrosive nature of the media. In automotive manufacturing, bolts with good wear resistance are required for components like engines and transmissions. And in architectural structures, bolts with high strength and stability are essential to bear significant loads.

Jiangsu Ying Yan Fastening System Technology Co. Ltd was founded in 2002. It is located in Wujiang Fenhu High-tech Industrial Development Zone, Suzhou City. It has a superior geographical location and convenient transportation. It is a professional fastener manufacturer integrating R&D, production and sales manufacturer. The company has established a complete quality management system, invested heavily in the establishment of R&D technology centers, introduced high-tech talents, and used the ERP system for efficient and orderly management. The company has been adhering to the principle of mutual benefit and win-win cooperation with customers from different industries for many years. The value and significance of an enterprise do not lie in the so-called success for a while, but in the ability to create more social value and assume social responsibility while continuously creating economic value.

In the 24 years of development, Jiangsu Ying Yan Fastening System Technology Co. Ltd has always adhered to the development concept of "creating excellent quality with the heart of a craftsman", and also adhered to the operating principle of "innovation, quality, service, gratitude" to absorb New ideas, strict quality control, all-round service for the purpose. With the continuous development and growth of the company, we will continue to pursue the above concepts, principles and purposes, use the wisdom created by ingenuity to create fastener products, provide competitive industrial product solution services, and continue to create the greatest value for customers. Value, become the ultimate choice for end customers.

Persevere in building Yingyan fastening system technology into a benchmark enterprise in the domestic and foreign fastener industry, and write the industry legend of domestic fastener products!