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Loose Plate Flange

Based on different connection means between flanges and pipes, flange can be divided into 5 main types, which are weld neck flange, threaded flange, socket weld flange, loose plate flange, and slip on weld flange. Among them, loose plate flange is a combination of two types of flanges.

Industrial Processes
Die forging, Machining

Industries Served
Power generation, petroleum, natural gas, chemical, shipbuilding, heating, papermaking, metallurgy

1. Loose Plate Flange(Butt Welding)

Size 
Loose plate flange: 3/8"~48"
DN10~DN1200

Pressure
American Series: CLASS 150, CLASS 300, CLASS 400, CLASS 600, CLASS 900, CLASS 1500, CLASS 2500
European Series: PN 2.5, PN 6, PN 10, PN 16, PN 25, PN 40

Flange Facing Types
American Series: Flat Face(FF), Raised Face(RF), Tongue(T), Groove(G), Female(F), Male(M), Ring Joints Face(RJ)
European Series: Type A(Flat Face), Type B(Raised Face), Type C(Tongue), Type D(Groove), Type E(Spigot), Type F(Recess), Type G(O-Ring Spigot), Type H (O-Ring Groove)

Materials
Carbon steel: A105
Alloy steel: A182 F 1-F 2-F 5-F 9-F 10-F 91-F 92-F 122-F 911-F 11-F 12-F 21-F 22     
Stainless steel: A182 304-304H-304L-304N-304LN 316-316H-316L-316N-316LN 321-321H 347-347H 
Low temperature steel: A522 A707 Grade L 1-L 2-L 3-L 4-L 5-L 6-L 7-L 8   
High performance steel: A694 F 42-F 46-F 48-F 50-F 52-F 56-F 60-F 65-F 70

Standards
GB/T9112-2000
GB/T9118.1-2000 GB/T9118.2-2000
GB/T9120.1-2000 GB/T9120.2-2000 GB/T9120.3-2000
GB/T9122-2000
GB/T9124-2000
SH/T3406-1996
JB/T74-1994
JB/T75-1994
JB/T84-1994
JB/T85-1994
HG/T20592-2009 HG/T20614-2009
HG/T20615-2009 HG/T20623-2009 HG/T20635-2009
ASME B16.5-2009
EN1092-1-2007 EN1759-1-2004
BS1560-3.1-1989 BS4504-3.1-1989
AFNOR NF E29-200-1-2007
ISO7005-1-1992
JIS B2220-2004

2. Loose Plate Flange (Flat Welding)

Size
Loose plate flange: 3/8"~24"
DN10~DN600

Pressure
American Series: CLASS 150, CLASS 300, CLASS 400, CLASS 600, CLASS 900, CLASS 1500, CLASS 2500
European Series: PN 2.5, PN 6, PN 10, PN 16, PN 25, PN 40

Flange Facing Types
American Series: Flat Face(FF), Raised Face(RF), Tongue(T), Groove(G), Female(F), Male(M)
European Series: Type B(Raised Face), Type C(Tongue), Type D(Groove), Type E(Spigot), Type F(Recess)

Materials
Carbon steel: A105
Alloy steel: A182 F 1-F 2-F 5-F 9-F 10-F 91-F 92-F 122-F 911-F 11-F 12-F 21-F 22
Stainless steel: A182 304-304H-304L-304N-304LN 316-316H-316L-316N-316LN 321-321H 347-347H
Low temperature steel: A522 A707 Grade L 1-L 2-L 3-L 4-L 5-L 6-L 7-L 8
High performance steel: A694 F 42-F 46-F 48-F 50-F 52-F 56-F 60-F 65-F 70

Standards
GB/T9112-2000
GB/T9121.1-2000 GB/T9121.2-2000 GB/T9121.3-2000
GB/T9124-2000
SH/T3406-1996
JB/T74-1994
JB/T75-1994
JB/T83-1994
HG/T20592-2009 HG/T20614-2009
HG/T20615-2009 HG/T20623-2009 HG/T20635-2009
ASME B16.5-2009
EN1092-1-2007 EN1759-1-2004
BS1560-3.1-1989 BS4504-3.1-1989
AFNOR NF E29-200-1-2007
ISO7005-1-1992
JIS B2220-2004

Hebei shengtian pipe-fitting group co.,ltd is a professional loose plate flange manufacturer in China which specializes in the production of various kinds of industrial pipe fittings including pipe elbows, pipe crosses, socket weld flanges, socket weld tees and more. All of these products conform to ISO9000, ISO14001, GB/T28001, Q/SY1002.1 standards. As a result of their high quality and low prices, our products are sought after in many countries, such as Italy, Belgium, the United States, Chile, Bolivia, United Arab Emirates, Brazil, South Korea, India and so on.
Please contact us if you need any of them.