On December 30, 2022,Tianjin Yuantai derun Group square and rectangular welded steel pipe obtained the AAAAA product certification of metallurgical Industry Planning and Research Institute。

The standard is based on the specific requirements of "assured" for square and rectangular welded pipes for structural use, square and rectangular steel pipes for general structural use, taking into account quality consistency, quality feedback, product certification, honors and awards at the product level, quality assurance capability, innovation capability, corporate integrity, service level and information technology at the enterprise level. The level of content, around the transmission of enterprise product quality assurance capabilities and product brand value, the development of scientific and reasonable, advanced and applicable evaluation criteria, for the next step in the structural use of welded pipe, general purpose cold-rolled or hot-rolled welded steel pipe brand certification to provide the basis for confidence, cultivate and build steel products "confidence brand".