Tianjin Yuantai Derun Steel Pipe Manufacturing Group Co., Ltd. is a trusted name in the field of square and rectangular steel pipes for structural use. With over 21 years of experience in production and manufacturing, the group has invested heavily in research and innovation, spending 50 million yuan annually. Their efforts have resulted in 80 patents and a leading position among sister companies in China. The group has also played an active role in the development of industry standards for square and structural steel pipes in China. In fact, it is one of the top ten steel pipe brands for rectangular steel pipes. Their production line includes 51 black high-frequency welding lines, 10 pre-galvanized steel pipe production lines, 10 hot-dip galvanizing production lines, 3 spiral welded steel pipe production lines, and 1 straight seam steel pipe production line. This year, the group has added 3 new zinc-aluminum-magnesium steel pipe production lines, and has participated in over 6,000 large-scale project constructions and supplies, with an annual production capacity of 10 million tons.