[待更新] Mainly manufactures seamless steel pipe, galvanized steel pipe, ERW steel pipe and hot expansion steel pipe. As the owner of ISO***Quality System Authentification, API 5L and API 5CT certificates. Our products have been well sold in China and exported to Southeast Asia, Middle East, Europe and North America, etc.,.Hebei Gongyuan Pipe Manufacture Co...., Ltd. （China Ascending Pipeline&Har...
