pound per square inch gauge
what is the full form of GAL
1 psig is equivalent to 51.71 mm (2 in) of mercury or to approx 700 mm (27.5 in) of water. Technically one cannot have apsig. Psig represents a pressure reading of the pressure above normal atmospheric pressure of 14.7 psi. You mean a psi.
what is the full form of UKG ,LKG class
44.7 psi
14.7 psig at sea level
psia to psig psig - 15 15 - 15= 0 psig
psia=psig+atmospheric pressure where, atmospheric pressure = 14.7psi therefore psig=psia-atmospheric pressure psig=100-14.7 psig=85.3psig
70 psig
psig
55 psig +15=70
You asked for black iron pipe ratings but below is an explanation for CARBON steel, which is much stronger. Iron and steel are not the same thing. The working pressure depends on the size of the pipe. These pressures are rated up to 400 degrees F. THESE RATINGS ARE FOR *CARBON STEEL*NOT BLACK IRON! Again, these pressures are maximum working pressures, not burst pressures. 1/4" 188psig 3/8" 203 psig 1/2" 214 psig 3/4" 217 psig 1" 226 psig 1-1/4" 229 psig 1-1/2" 231 psig 2" 230 psig The full table can be found here: http://www.engineeringtoolbox.com/astm-steel-pipes-working-pressure-d_775.html
0.5 psig = 420.62 inches of water column.
Psi’s-14.696
10 psig
PSIG refers to pound/force per square inch gauge, while PSI measures the pressure relative to a vacuum. If you want to convert a figure from PSIG to PSI, you would need to add 14.7psi to your PSIG figure, which will give you your PSIA result.
Your high and low pressure readings will be directly affected by the ambient air temperature and humidity. At 60 degrees (Fahrenheit), you should be looking right about at 58 psig. At 100 (Fahrenheit), you'd be looking at something closer to 125 psig.
1 bar = 14.5 psig so 3.5 bar = 51 psig (what your significate figures)