... ,GOST,EN ZHEJIANG PENGYE is professional manufacture of stainless steel seamless pipe and tube in China. 1.SIZE: OD from ... purchases raw material from Baosteel Group Shanghai No. 5 Steel Factory, Huzhou Jiuli Group, Taiwan, etc.The pipes ... energy,electric power, aeronautics and astronautics, environmental protection, boiler gas, war industry, machinery, nuclear power, construction, shipbuilding and etc ...