Plate Flange,Plain Flange

2019-06-24 16:27:26 Views:2721 Forged Flanges / Plate Flange / Products

What is a plate flange(plain flange)?

A plate flange also called plain flange,flat flange,plate slip on flange or ring flange,it is one kind of the slip on flange(without hub).Plate flange looks like a flat,circular disk with inner hole and bolt holes on it,that is welded onto the end of a steel pipe and allows it to be bolted to another pipe.The inner hole of plate flange is a little bigger than the pipe outer diameter.

EN 1092-1 Q235 FF plate flanges

Plate flanges are secured to the pipe with a fillet weld at the bottom and the top of flanges with the pipes.The welding method is fillet weld,so the plate flange is not suitable for a high pressure application.Typially used in fuel and water pipelines,the two plate flanges will be bolted together with a gasket between them.

Specifications of plate flange(plain flange):

ANSI/ASME standard:

ANSI/ASME B16.5 (In ANSI/ASME B16.5 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.)

ANSI/ASME B16.5 class 150 plate flange dimensions: ½”-24″
ANSI/ASME B16.5 class 300 plate flange dimensions: ½”-24″
ANSI/ASME B16.5 class 400 plate flange dimensions: ½”-24″
ANSI/ASME B16.5 class 600 plate flange dimensions: ½”-24″
ANSI/ASME B16.5 class 900 plate flange dimensions: ½”-24″
ANSI/ASME B16.5 class 1500 plate flange dimensions: ½”-2½”
AWWA C207

AS standard:

AS 2129

BS standard:

BS1560
BS 4504
BS 10 table D,E plate flange dimensions:½”-24″
BS 10 table F,H,J,K,R,S,T plate flange dimensions:½”-24″

DIN standard:

DIN 2501
DIN 2502
DIN 2573
DIN 2576

EN standard:

EN1092-1
EN1759-1.

ISO standard:

ISO 7005-1

JIS standard:

JIS B2220 5K plate slip on flange dimensions: 10-1500A
JIS B2220 10K plate slip on flange dimensions: 10-350A

MSS standard:

MSS SP-44

UNI standard:

UNI 2276
UNI 2277
UNI 2278
UNI 6089
UNI 6090

Materials of plate flange:

Haihao Group manufacture plate flanges with various materials,such as carbon steel,stainless steel and alloy steel.

Carbon steel plate flange:

ASTM A105 plate flange
ASTM A350 LF2 plate flange
SS400 plate flange
P235GH plate flange
P250GH plate flange
C22.8 plate flange
Q235 plate flange

Stainless steel plate flange:

ASTM A182 F304 plate flange
ASTM A182 F304L plate flange
ASTM A182 F316 plate flange
ASTM A182 F316L plate flange
ASTM A182 F321 plate flange
ASTM A182 F347 plate flange

Alloy steel plate flange:

ASTM A694 F42 plate flange
ASTM A694 F46 plate flange
ASTM A694 F52 plate flange
ASTM A694 F56 plate flange
ASTM A694 F60 plate flange
ASTM A694 F65 plate flange
ASTM A694 F70 plate flange
ASTM A182 F5 plate flange
ASTM A182 F9 plate flange
ASTM A182 F11 plate flange
ASTM A182 F12 plate flange
ASTM A182 F22 plate flange
ASTM A182 F91 plate flange

The sealing face of plate flange:

Though the 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 systems.

Haihao Group are specialized in the production of forged flanges,our forged flange products as follows:

Weld Neck Flange	Blind Flange	Slip On Flange	Plate Flange
Socket Weld Flange	Threaded Flange	Lap Joint Flange	Long Weld Neck Flange
Orifice flange	Spectacle Blind Flange	Nipoflange	Reducing Flange
Anchor Flanges	Large Diameter Flange	Tubesheet	Non-standard Flange