
Hex Head Bolt for Steel Structure. Proven Project References: Used in major projects like Shenzhen Ping An Building and Hongkong-Zhuhai-Macau Bridge. High Production Capacity: Annual output of 1,500 million pieces with 10 production lines and 46 employees. Strict Quality Control: 100% inspection with National Enterprise Technology Center and ISO9001 certification. Multiple Surface Treatments: Options include Hot-dipped galvanized, Dacromet, Black oxide, and Phosphating. Customizable Length: Length can be customized from 30mm to 400mm or 1 to 20 inches. Wide Diameter Range: Available in diameters from M12 to M36 or 1/2 inch to 1 1/2 inch. Flexible Customization: Supports customization from samples, designs, and minor adjustments. Fast Delivery for Stock: Delivery takes about 2 days if items are in stock.