“handong Dezheng Steel Co., Ltd.（Dezheng steel for short）is located in Liaocheng Development Zone, Shandong Province, the capital of steel pipes in China, The company has a mature independent research and development team that is consistent and innovative. At present, We has 15 seamless steel pipe cold-rolled and cold-drawn production lines, with an annual output of 100,000 tons of cold-rolled and cold-drawn steel pipes in outer diameter of 8mm-325mm; Also has 4 hot-rolled production lines. , with an annual output of 300,000 tons of hot-rolled seamless steel pipes in outer diameter of 28-325mm