Based on difterent connection means between flanges and pipes, flange can be divided into 5 main types, which are weldneck 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 Wwlding)

Size

Loose plate  flange 3/8"-80"

DN10~DN2000

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: ASTM/ASME A105, ASTM/ASME A516 Grade 55-60-65-70

Alloy Steel:ASTM/ASME A182 F1-F12-F11-F22-F5-F9-F91-F911-F92

Stainless Steel:ASTM/ASME A182 F304-F304H-F304L-F304N-F304LN F316-F316H-F316L-F316N-F316LN F321-F321H F347-F347H, ASTM/ASME A182 F51-F52-F53-F54-F55-F60-F61

Low-Temperature Steel: ASTM/ASME A522, ASTM/ASME A707 Grade L1-L2-L3-L4-L5-L6-L7-L8

High-Strength Steel:ASTM/ASME A694 F42-F46-F48-F50-F52-F56-F60-F65-F70

Standards

ASME B16.5-2013

EN 1092-1-2007, EN 1759-1-2004

ISO 7005-1-1992

GB/T 9112-2010, GB/T 9120-2010

HG/T 20592-2009, HG/T 20615-2009

SH/T 3406-2013

GOST AFNOR-BS-DIN

2.Loose Plate Flange(Flat Wwlding)

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: ASTM/ASME A105, ASTM/ASME A516 Grade 55-60-65-70

Alloy Steel:ASTM/ASME A182 F1-F12-F11-F22-F5-F9-F91-F911-F92

Stainless Steel:ASTM/ASME A182 F304-F304H-F304L-F304N-F304LN F316-F316H-F316L-F316N-F316LN F321-F321H F347-F347H, ASTM/ASME A182 F51-F52-F53-F54-F55-F60-F61

Low-Temperature Steel: ASTM/ASME A522, ASTM/ASME A707 Grade L1-L2-L3-L4-L5-L6-L7-L8

High-Strength Steel:ASTM/ASME A694 F42-F46-F48-F50-F52-F56-F60-F65-F70

Standards

ASME B16.5-2013

EN 1092-1-2007, EN 1759-1-2004

ISO 7005-1-1992

GB/T 9112-2010, GB/T 9121-2010

HG/T 20592-2009, HG/T 20615-2009

SH/T 3406-2013

GOST AFNOR-BS-DIN

Ahad 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 ISO 9000, Pressure Equipment Directive 97/23/EC (PED 97/23/EC), AD2000 Merkblatt W0, and APl standard.As a result of their superior quality and competitive price, our products are sought after in many countries, suchas ltaly, Germany, Spain, France, Russia, the United States, Brazil, lran, lndia, among others.

Please contact us if you need any of them.