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  • Users: rknjs
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  1. rknjs

    Dears. Do anyone know the proces

    Dears. Do anyone know the process and procedure of performing PTFE lining on sulphuric acid storage tanks
  2. rknjs

    ZINC ELECTROPLATING ON ID OF TUBULAR COMPONENTS

    Dears We have a product of size 320mm long and ID 80mm , which requires to be zinc electroplated as per ASTM B633 TYP 3.But at the time of electroplating we observed that the ID portions are not getting zinc depositions and hence parts are getting rejected on coating.Can anyone pls advise how...
  3. rknjs

    ASTM A453 660

    Hi Anyone can advise how we can certify a forged nut as per ASTM A453 660.Because this standard only mentions the mechanical results of tested bar.But forged nuts will be having some different properties and not possible to do tensile testing.Is there any standard in ASTM which gives reference...
  4. rknjs

    CARBIDE SOLUTION TREATMENT ON ASTM A193 B8M

    Hi ,We have tried some solution annealing of 316 forged bolts to meet the requirements as per ASTM A193 B8M CL.1. Observed hardness before solution treatment was 38HRC .Parts has heated to 1050Deg for 1 hour and water cooled.Hardness has dropped to 125HBW after treatment. We will perform a...

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