Description
Plain Flange (Plate flange) is also called flat flange, plate slip on flange or a ring flange. It looks like a flat circular disk with inner bore and bolt holes on it. It is one kind of the slip on flange.Plate flange means the flange is like a flat plate, it could be Raised Face (RF) sealing face, commonly the plate flange could be RF or FF face, the Raised Face Plain Flange is much popular in regular industry ANSI/ASME B16.5 flange standard, there is no plate slip on flange, only hub slip on flange in it, but in different projects the ANSI B16.5 plate flange is used a lot for decrease the cost of the projects. The ANSI /ASME B16.5 plain flange should have the same dimensions and PCDs with the Slip on flange, the only difference is without a hub on the flange.

Features
Plain Flange

Size:1/2"to 60"

Class:150lb,300lb,600lb,900lb,1500lb,2500lb,DIN 6bar,10bar,16bar,25bar,40bar

Standards:ANSI B16.5, ANSI B16.47.

Flange Facings:Flate face(FF),Raised Face(RF),Ring Type Joint(RTJ)

Grades:

Stainless steel Flat Face FLanges:

ASTM A182 F304/F304L,F316/F316L,F321, F347

Carbon steel Flate Face Flanges:

ASME A105/A105N, ASTM A350 LF1/LF2, LF3

Alloy Steel Flate Face FLanges:

ASTM A182 F1, F5, F7, F9, F12, F22, F91