... InductionCangzhou rongtong pipeline equipment co. ltd is a collection development, operations and manufacturing in one of the professional pipe fittings manufactures ... ,5000T presses ,advanced CNC drilling machines , sawing machines , lathes ,water jet ,etc ..Flange of the production range of produce-diameter ... , Gas, Metallurgy, Shipbuilding, Construction and so on stainless steel water pipe fittings