Hunan Standard Steel co.,Ltd

Hunan Standard Steel Co.,Ltd HSCO was founded in 1989 and our enterprise is the predecessor of branch of China's oil and gas pipeline science research institute, as the most authoritative pipeline engineering research institute, consists of eight backbone institute and line pipe bureau postdoctoral research stations, oil and gas pipe is "safe" the main body of the national engineering laboratory on units, is China technology center and plumbing contractor branch of China welding association d