The kilogram (kg) is the legal unit of measurement of mass in the International System of Units, and the pound (lb) is the imperial unit of mass used in the United Kingdom and the United States, which is used as a code for weight measurement. So, how many pounds are there in a pound? How many kilograms are there in a pound?

According to the international metric conversion standard, 1 pound =453.6 grams, and 1 jin =500 grams, so 1 pound =0.972 jin, that is, 1 pound = 0.4536 kg.

Common weight conversion methods:

1 kg = 0.001 metric tons (or "tons") 1 ounce = 437.5 grains = 28.350 grams

1 kg = 1,000 grams 1 lb = 16 oz = 0.4536 kg

1 kg = 1,000,000 mg. 1 U.S. weight = 100 pounds = 45.359 kg

1 kg = 1,000,000,000 micrograms 1 hundredweight = 112 pounds = 50.802 kg

1 kilogram =2 pounds 1 US ton = 2000 pounds = 0.9072 metric tons

1 kilogram =20 two 1 pound tons = 2240 pounds = 1.0161 metric tons

Conversion of kilograms and pounds in the valve:

Because the standard of the valve is different, some valve pressure is expressed by pound (class), and some are expressed by kilogram (PN), then how to convert the pound and kilogram in the valve? Kg PN is a pressure related code, is the nominal pressure usually used by domestic valves, pound (class) is the nominal pressure represented by the American standard valve, kg (PN) and pound (CLass) are the method of indicating pressure, the difference is that they represent the pressure corresponding to the reference temperature is different.

Valve pound class and nominal pressure unit comparison table:

Pound Class

150 300 400 600 800 900 1500 2500

Kg (PN)

2.0 5.0 6.3 10.0 13.0 15.0 25.0 42.0

Note: The kilogram (PN) European system refers to the pressure corresponding to 120 ° C, and the pound (CLass) US standard refers to the pressure corresponding to 425 ° C. Therefore, the pressure conversion can not only be carried out in the engineering exchange.

Example: The pure pressure conversion of CLass300# should be 2.1MPa, but if the use temperature is taken into account, the corresponding pressure will be increased, which is equivalent to 5.0MPa according to the temperature withstand pressure test of the material.