... . A403-WP304L. A403-WP316. A403-WP316L.Applications rangePetroleum, chemical, power, gas, metallurgy, shipbuilding, construction, etcMin Order ... ISO9001 strictly.Company info. Cangzhou Guyuan Steel Pipe Co., LTD is located in cangzhou hebei China, was founded ... years, our company for domestic coal-fired power, chemical, shipbuilding, metallurgy, pressure vessel, petrochina and sinopec ...