During the forging process, the extension of the material will be uneven (related to the structure and process of the product, from thick to thin), resulting in small pores on the surface.
During the forging process, the material extension will be uneven (related to the structure and process of the product, from thick to thin), resulting in small pores on the surface.
In the process of forging, the material extension will be uneven (related to the structure and process of the product, from thick to thin), resulting in small pores on the surface.