The transition section between the melting zone and the non melting zone. The chemical composition of the fusion zone is uneven、 and the structure is coarse、 often resulting in coarse overheated or hardened structures. Its performance is often the worst among welded joints. The overheated zone (or quenched zone) in the fusion zone and heat affected zone is the weakest part in the mechanical properties of welded joints、 which can seriously affect the quality of welded joints p>
Function of testing report:
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1. Telephone communication and confirmation of requirements
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1. The testing industry is fully covered、 meeting different testing needs
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