Quality Control


Samshin performs receiving inspection, material tests, in-process inspection, pressure tests, functional test and final inspection.
Samshin's quality control system and manufacturing process for the materials(forgings and castings)
are approved by ASME, Lloyd's Register, Bureau Veritas(BV) and Det Norske Veritas(DNV).

 

Major tests and examinations are :

- Chemical Analysis

- Mechanical properties Test (tensile, hardness and impact)

- Inter-granular Corrosion Test

- Delta Ferrite Measurement

- Nondestructive Examination (RT, UT, MT, PT, VT)

- Pressure Test (valve body shell and seat closure test)

- Helium Leak Test

- Operation Test including Stroking Time Test for MOV

- Static Diagnostic Test for MOV & AOV