Tianjin Haiyunda Metal Material Co., Ltd., is located in Daqiuzhuang Town, which is one of the largest steel bases in Tianjin of China. After years of development, our company has formed an integrated line of production, as well as import and export trade. Our company can produce concrete steel frame formwork independently. Our main products are F steel profile, Y/T post, steel channels, Special steel tubes, rectangular/square /round steel pipes. Our company has advanced production equipment ...