Carabiners have two main aspects in the testing process:

Pull test: This test is mainly to test the bearing capacity of Carabiners, which is divided into two steps to complete:

1. Instant tension test, mainly used for the buckle, D buckle, and sun buckle, to test the strength of Carabiners when suddenly encountering pulling solid force.

2. Endurance tensile test, its main principle is determining the time value that Carabiners endure when a certain weight is loaded.

The temperature test is mainly to test the endurance of Carabiners under unconventional temperatures, divided into high-temperature and low-temperature tests.

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1. The high temperature is usually set at 70 degrees Celsius

2. The low temperature is usually set at minus 30 degrees. The time was 24 hours, and then the change in intensity was tested.

Salt spray test: This test mainly monitors Carabiners’ salinity resistance. Some products can only be transported by sea. Long-term sea operation will affect the quality of the products. This test is divided into four steps:

1. Soak Carabiners in seawater for 72 hours

2. Put the soaked Carabiners in the sun for 5-7 days

3. After the completion of the test, whether there has been much change in the strength of the test.

4. Some tests, such as acid resistance tests, etc., can be tested according to different needs and materials. Among them, the metal Carabiners should also test their anti-rust, anti-corrosion, drug resistance, etc… If plastic carabiners post-processing of products, such as electroplating, water dyeing, oiling, and other processes, it is necessary to test whether these other processes are qualified.

The above is a brief introduction to Carabiners. With the continuous development of products and the increasing diversification of varieties, the testing in this area is becoming more and more strict.