These non-standard joint bolts comply with German standards and are made of high-strength alloy steel with strict heat treatment process. Available in 8.8, 10.9 and 12.9 strength grades for different load-bearing requirements. The whole surface is galvanized to enhance corrosion resistance and rustproof performance, adapting to various complex working environments for long-term use. Adopting fish eye and lifting ring integrated structure with hole design, the joint connection is flexible and firm with strong bearing capacity and stable assembly effect. Supports non-standard customized processing to meet special installation and connection demands of various equipment. Widely used for mechanical hoisting connection, equipment assembly and engineering fixing scenarios. Stable factory quality supply, ideal for global hardware purchasers and industrial manufacturing enterprises.