Classification about flanges

　　1.Classification about flanges

　　Welding neck flanges,Socket weld flanges,Long welding neck flanges,Stub-ends,Slip on flanges,lap joint flanges,Blind flanges,Orifice flanges,etc.

　　2.According to the standard the Pressure can be divided into ANSI class150,class 300,class 600,class 900,class 1500,class 2500 etc.DIN PN5,PN10,PN25,PN40 etc.JIS 5K,10K,16K,20K,30K,40K etc.

　　3.Definition of  flanges

　　A flange can also be a plate or ring to form a rim at the end of a pipe when fastened to the pipe (for example, a closet flange). A blind flange is a plate for covering or closing the end of a pipe. A flange joint is a connection of pipes, where the connecting pieces have flanges by which the parts are bolted together.