tianjin dalipu oil country tubular goods co.,ltd
  • Contactmiranda chen
  • Phone86-022-68690382

Quality Control

percent of products which pass initial pressure tesls shall be more than 97%

percent of threading which doesn't congform to specified shall be less than 2%

percent of contract performance shall be more than 96%

percent of customers satisfaction shall be more than 95%


  • ISO
  • 06517Q32318R0S
  • 2017-12-19
  • 2020-12-18