Welcome to the world of high-quality 10.9 grade bolts manufactured by Ningbo Zhongli Bolts Manufacturing Co., Ltd. Our company is a leading manufacturer of bolts known for their superior hardness and durability, Our 10.9 grade bolts are designed to withstand high levels of tensile stress and are widely used in various industries such as construction, automotive, and machinery. These bolts are made from top-quality materials and are heat-treated to achieve a hardness level of 33-39 HRC, making them suitable for heavy-duty applications, We take great pride in our manufacturing process, which ensures the precision and consistency of each bolt produced. Our experienced team and state-of-the-art equipment guarantee that our bolts meet the highest industry standards, Whether you are building a new structure or repairing heavy machinery, our 10.9 grade bolts are the reliable choice for your fastening needs. Trust Ningbo Zhongli Bolts Manufacturing Co., Ltd. for bolts that are strong, durable and designed to last
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