CNAS certificate

The CNAS accreditation obtained by Cangzhou Spiral Steel Pipe Manufacturing Group represents a highly authoritative recognition by the China National Accreditation Service for Conformity Assessment (CNAS) of the technical capabilities and management systems of the Group’s internal laboratories and inspection bodies. This certification demonstrates that the Group’s testing activities comply with the international standard ISO/IEC 17025, “General Requirements for the Competence of Testing and Calibration Laboratories,” and that the test reports issued by the Group enjoy broad credibility within the international multilateral mutual recognition system.

CNAS certification signifies that our Group has achieved national and even international professional standards in the following areas:

Our Group’s laboratories have passed CNAS’s rigorous evaluation in areas such as personnel qualifications, equipment accuracy, testing methods, environmental control, and quality management systems. This ensures that testing data for raw materials (e.g., chemical composition and mechanical properties of steel plates), production processes (e.g., welding quality and dimensional accuracy), and final products (e.g., hydrostatic pressure test results and non-destructive testing results) is scientific, accurate, impartial, and traceable.

Test reports issued by CNAS-accredited laboratories are recognized by accreditation bodies in other countries and regions that have signed mutual recognition agreements with the International Laboratory Accreditation Cooperation (ILAC). This greatly facilitates product exports and international project collaboration, providing clients—especially international clients—with highly credible third-party quality certification, while effectively reducing the costs and time associated with duplicate testing.

This accreditation is a critical component in our Group’s efforts to establish a comprehensive quality assurance system. It elevates internal quality control from “compliance with internal specifications” to “compliance with internationally recognized authoritative standards.” This not only ensures the exceptional quality and consistency of our products but also continuously drives the advancement of testing technologies and the optimization of management systems, serving as a solid foundation for our corporate philosophy of “quality first.”

Leveraging our CNAS-accredited testing capabilities, our Group will continue to provide global customers with spiral welded steel pipe products and services that are data-reliable, of superior quality, and trustworthy.