Where can shackles be inspected? Baijian and testing institutions can provide shackle testing services, issue testing reports within 7-15 working days, support scanning code to check authenticity, third-party material laboratories, Baijian and testing is a collectively owned testing institution with multiple laboratory branches nationwide, and support on-site sampling/sample sending testing services nationwide. Testing cycle: 7-15 working days Testing cost: After the initial sample inspection, a quotation will be made based on the customer's testing needs and the complexity of the experiment. Introduction to shackles: After the finished shackle is released, it must undergo tensile testing, surface inspection, and appearance measurement before use. The surface of the shackle is required to be smooth and flat, without cracks, flaws, sharp edges, and other defects. The thread of the horizontal pin connection must not have any slipping, looseness, or jamming. For shackles that have undergone tempering treatment, hardness testing should be conducted, and their surface hardness should not be too large. Each new shackle must undergo a load test (destructive load test, guaranteed load test, point load test, dynamic mechanical load test) before use. The experimental load applied during the tensile test should be twice the rated load, and the test time should be guaranteed to be 5 minutes. After unloading, it is necessary to conduct a comprehensive and careful inspection, and there should be no deformation or visible defects. The horizontal pin should be able to rotate freely. For shackles that have undergone load testing, a comprehensive environmental reliability test will be conducted at a rate of 5%. In addition, the shackle must undergo regular tensile tests to ensure its reliability. Regular tensile test time: For shackles used in grab buckets, they should be tested every three months; Used for shackles on other loading and unloading tools, every six months. At the same time, regular annealing treatment is required for shackles in use to eliminate internal stress testing. The annealing temperature is 650 ℃, and the annealing time depends on the diameter of the shackle steel. The detection range of shackles includes high-strength shackles, lifting and reusing shackles, bow shackles, d-type shackles, national standard shackles, steel wire rope shackles, U-type shackles, stainless steel shackles, marine shackles, anchor chain shackles, etc. Shackle inspection items include flaw detection, strength testing, non-destructive testing, entry testing, quality testing, aging testing, tensile testing, wear testing, third-party testing, salt spray testing, rated load testing, fatigue life testing, breaking force testing, lifting force testing, torque testing, verification testing, static load testing, lifting weight testing, etc