Multifunction wide-range piston pressure gauge

Product Description ZHT series piston type pressure gauge is my company according to the national latest "piston type pressure gauge verification regulations" (JJG59-2007) require new research and development design and manufacturing.Due to the key components of the piston pressure gauge with high hardness and low temperature coefficient of linear expansion of tungsten carbide material, so as to improve the wear resistance of the piston, therefore under pressure after