Reducing the size of the head tube, also known reducer, reducer, reducer straight. One chemical fittings for connecting two pipes of different diameters between. According to different shapes, sizes head into concentric and eccentric head in two sizes. The size of the head materials including stainless steel head size (304304l316316l), alloy steel, carbon steel head size, head size 20 are made of steel, Q235, Q345,16Mn so on. Product Quality: ISO9001: 2008 quality management system certification, ISO14001 environmental management system certification, OHSAS18001 occupational health and safety management system, pressure pipe special equipment manufacturing license, the State Power Corporation, China National Petroleum Corporation a supply network members Price: Due product price changes frequently, you can through our website (Hebei Stone High Pressure Flange Pipe Fittings Co., Ltd.) quickly consult us.