In order to ensure quality of products, we have introduced several online inspection instruments, such as NDT,
hydro test and so on. In production, we insist that the unqualified raw materials won't be put into production, unqualified upstream products won't be turned into next procedure and the unqualified finished products won't be delivered.



petroleum casings comply with API spec 5CT,SY/T6194-2003
Usages:petroleum and nautre air exploration