Flange specification PL20 (B)
Hello, I am Hebei wealthrun Pipe Industry Co. Ltd, we are the production of flange manufacturers, this is a Ministry of chemical industry standard, PL is the flange nominal diameter is 20. B most finger outside diameter.
PL slip on plate 20 is DN (B) is a series of B with diameter of 25 steel which belongs to the national standard or Western Europe
This is American Standard flange welding plate flange American Standard 20 pounds
