ZSD founded in 2006, the companies belonging to the Trade and Industry Enterprises, the upcoming production, Trade rolled into one. The earlier production at the factory in Jinghai County of Tianjin Taegu Collier economic zone. Is set straight pipe joints, hot galvanized pipe, spiral pipe and other products in the integration of large enterprise groups.

Over the years, the company has always aimed at the international market, the pursuit of technological progress, the courage to go beyond self - sincere dedication to social business philosophy, long-term business development strategies; Adhere to technological progress as a leader, External seizing the opportunity to strengthen internal management principles, promoting innovative ideas and pragmatic, progressive and Panfeng entrepreneurial spirit, enable enterprises to international level. The company's products mainly used in oil and gas pipelines, involving industrial and civil water supply, gas supply, heating, Architectural Ironmongery and oil fields; Marketing more than 20 domestic provinces, which have sold far away in Europe, North America, Africa, Southeast Asia and Australia, and other countries and regions, and sales network in the areas around Beijing and Tianjin as the center, based in North China, the whole country, the global radiation. In 2006, the whole series of products has been passed ISO9001: 2000 international quality system certification and in 2006 obtained API 5L and API 5CT logo for a permit, the results are very gratifying.