97精品久久久久久久久精品,情品网站黑人,免费观看黄网站在线播放,欧美亅性猛交内射

The degree of deformation of stainless steel sanitary fittings depends on the relative bending radius R/D and the relative thickness t/D value.

The smaller the R/D and t/D values, the greater the degree of deformation.

In order to ensure the forming quality of stainless steel sanitary pipe fittings, the deformation degree must be controlled within the permissible 

range, and the bending forming limit of the pipe depends on the mechanical properties and bending methods of the material.