different from carbon steel elbow stainless steel elbow punch mainly to the different materials, which contains the chemical composition of the surface for a long time will remain elbow will not rust, corrode easily. stainless steel to stainless steel, corrosion resistance as the main feature, and the chromium content of at least 10.5%, the maximum [...]

driven mechanical pump set pressure, the correct way is to make the driving pressure higher than the back pressure 1-1.5kg/cm2 (15-20psig). In most cases this is correct. But sometimes in order to achieve the requirements of the pump displacement, the need will drive pressure was set slightly higher. Driving pressure is high, the downside is [...]

oil pumps used in chemical plants according to their use can be divided into the following: 1. feeding pump petrochemical plant not only to raw materials transported to the distillation tower, sometimes to the reactor after the step-up, sometimes after the pump is the first furnace, and sometimes after the first pump furnace after the [...]

A hygrometer and humidity in the measurement method defined in the regulations, the humidity is defined as “state the amount of images.” Humidity within the meaning of everyday life for the relative humidity, with RH% said. In short, the gas (usually air) contained in water vapor (vapor pressure) with air saturated water vapor under the [...]

circulating water pump with reference to Japanese desktop pump, a one-time molding shell, improvements made to reduce the size, with small size, light weight, appearance, etc., double table, double exhaust, four-table four-tap, double-sided the same multi-purpose vacuum pump, even if the visual presentation of teachers and students can start at any side, off. body double [...]

erformance extreme pressure grease. Grease filled bearings and bearing capacity of container volume of 30% -60%, not too much. Seal structure of the double row tapered roller bearings and water pump bearing grease has been populated, the user can directly use, can no longer be cleaned. bearing installation, must be put on the ferrule end [...]