Hardness Testing Of Stainless Steel Pipes

Annealed stainless steel pipe with inner diameter above 6.0mm and wall thickness below 13mm can use W-B75 type Wechsler hardness tester, which is very fast and simple to test, suitable for fast and non-destructive inspection of stainless steel pipe. Stainless steel pipe with inner diameter greater than 30mm and wall thickness greater than 1.2mm is tested by Rockwell hardness tester to test HRB and HRC hardness. Stainless steel pipe with inner diameter greater than 30mm and wall thickness less than 1.2mm is tested HRT or HRN hardness by using surface Rockwell hardness tester. For stainless steel pipes with an inner diameter of less than 0mm and greater than 4.8mm, the Rockwell hardness tester for pipes is used to test HR15T hardness. When the inner diameter of the stainless steel pipe is greater than 26mm, the hardness of the inner wall of the pipe can also be tested with Rockwell or surface Rockwell hardness tester.