Integral Flange

The integral flange offered by N-STEEL is manufactured by die forging and precision machining process. Its size ranges from 3/8" to 80" and DN10 to DN2000. This long weld neck flange is great for pipe connection in various industries such as power, petroleum, natural gas, chemical, marine engineering, heat supply, papermaking, metallurgy, etc.

Pressure Rating of Integral Flange
American series: CLASS 150, CLASS 300, CLASS 400, CLASS 600, CLASS 900, CLASS 1500 and CLASS 2500
European series: PN 2.5, PN 6, PN 10, PN 16, PN 25, PN 40, PN 63, PN 100, PN 160, PN 250, PN 320 and PN 400

Types of Flange Face
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)

Available Materials of Integral Flange
Carbon steel: A105
Alloy steel: A182 F1-F2-F5-F9-F91-F1-F12-F22
Stainless steel: A182 304-304H-304L-304N-316-316H-316L-316N-316N-321-321H 347-347H
Low temperature steel: A350 LF2-LF3-LF8
High performance steel: A694 F42-F46-F52-F56-F60-F65-F70

Standards of Integral Flange
GB/T9112-2000, GB/T9113.1-2000, GB/T9113.2-2000, GB/T9113.3-2000, GB/T9113.4-2000, GB/T9124-2000, GB/T13402-1992
HG/T20592-2009, HG/T20614-2009, HG/T20615-2009, HG/T20623-2009, HG/T20635-2009
ASME B16.5-2009, ASME B16.47-2006
API605-1988
MSS SP 44-2006
CSA Z245.12-05-2005
EN1092-1-2007, EN1759-1-2004
BS1560-3.1-1989, BS4504-3.1-1989
AFNOR NF E29-200-1-2007
ISO7005-1-1992
AS2129-2000
JIS B2220-2004

We warmly welcome both domestic and overseas customers to contact us for more detailed information.