Addit. Info. : absolute pressure in this line is between 80.4 bar at inlet to 58.1 bar at outlet at maximum flow rate. temperature is :maximum 48 C at inlet to 32 c at outlet. length = 80 km= 80000 m
have no idea about the cleanliness on inside the pipe.
I`m trying to find out the pipe friction coefficient for 56 inch ASTM A106 pipe used for natural gas pipeline. I need the absolute roughness of such pipe (an old pipe used more than 3 years). Can any one help me in providing this info? Also it is appreciated if you can give me external link on...