PL flange is easy to use, simple to make, low cost and widely used. However, the rigidity is poor, so it must not be used in the occasion of supply and demand, flammable, explosive and high vacuum degree requirements of chemical process piping system and height and extreme harm.
PL flanges are common flanges, pressure is PN0.25, PN0.6, PN1.0, PN1.6, PN2.5.
PL flange welding form: plate level welding flange is to insert the pipe into the flange to weld.
The material of flat welding flange: 201304316. 316 l. 0 cr18ni9. 321.202, etc
There are several types of sealing surface of flat welding flange:
Concave convex surface (MFM) DN1300~3000 DN300~3000 DN400~2000 DN300~800
Mortise surface (TG) DN1300~3000 DN300~3000 DN300~800
Total plane (FF) DN300~3000 DN300~3000 DN300~3000 DN300~800