1. The matching bolt has passed the SGS Two million times Limited Life Range Test, and the test standard is ISO3800.
2. The matching bolts and nuts have fully passed the SGS TUV performance test ISO and SAE standards, including Tensile Test, Tensile Test for Full-Size Fastener, Proof Load Test, Hardness Test, Decarburization Test, Decarburization Test-hardness, Wedge Loading Test, Retempering Test.
3. The matching bolt and nut material passed the SGS TUV Chemical Composition Analysis Test.
4. The anti-rust performance of the matching bolts and nuts has passed the 192H neutral salt test, and the test standard is ISO9227.
5. The matching bolts pass TUV Microstructure, the standard is ASTM E3-11.