GB/T 12767-1991 《Powder metallurgy products--Surface roughness--Parameters and their values》 Related products

This standard specifies the method of assessing the surface roughness of powder metallurgical products, including parameters, values and measuring instrument requirements. Applicable to powder metallurgical products such as cemented carbide, the standard specifically considers products with porous structures, and stipulates that pores should be regarded as filled flat bottom surfaces for measurement. The standard provides specific requirements for measuring methods, parameter definitions and result processing to ensure the accuracy and conformity of surface roughness assessments.