Quality Control

We have been approved by ISO 9001, ISO 14001, OH SAS 18001, API SPEC 5CT, API SPEC 5L, JIS G3444, JIS G3452, EN10217, EN10219, UL852.

With State-of-the-Art Test equipmentand professional technicians, our Test & Inspection Center received “CNAS Laboratory Accreditation Certificate”, and also awarded “Tianjin Enterprise Technology Center” and “The Key Lab of Welded Pipe in Tianjin”. Furthermore, we have established“Academician Workstation” at our plant to serve welded pipe R&D, test & inspection, and technical exchange.