Dipper Valve evaluate qualified supplier according to ISO 9001 and TS requirement,what’s more,we dynamic manage the qualified supplier,which ensuring the material quality.

Dipper Valve laboratory equipped with professional equipment to perform material spectrographic analysis,metallographic analysis,Hydrogen Induced Cracking (HIC) test,Stress Corrosion Cracking (SSC) test,tensile test, (low temperature) impact test, hardness test, fatigue test and non-destructive test so on. This guaranteed the material meet the requirement of client as well as standard.