Weld Neck Flange
Weld Neck Flange
Weld Neck Flanges feature a tapered hub that transfers stress to the pipe, minimizing stress concentration and the risk of weld cracking. Connected via a full-penetration butt weld suitable for radiographic testing (NDT), they provide exceptional structural integrity.
These flanges are ideal for severe conditions involving high pressures, extreme temperatures, or hazardous fluids. Available in raised face (RF) and flat face (FF) configurations.
Ratings of weld neck flanges
American type: CLASS 150, CLASS 300, CLASS 400, CLASS 600, CLASS 900 และ CLASS 1500
European type: PN 6, PN 10, PN 16, PN 25, PN 40, PN 63 และ PN 100
Type of flange surface
Flat Face (FF), Raised face (RF), Tongue (T), Groove (G), Female (F), Male (M), Ring Joint (RJ)
Material of weld neck flange
Carbon Steel: A105
Stainless Steel: A182 304-304H-304L-316-316L
Standard of the weld neck flange
GB/T9112-2000,GB/T9115.1-2000, GB/T9115.2-2000, GB/T9115.3-2000, GB/T9115.4-2000, GB/T9124-2000, GB/T13402-1992
SH/T3406-1996
GD2000 GD87-1101
JB/T74-1994, JB/T75-1994, JB/T82.1-1994, JB/T82.2-1994, JB/T82.3-1994, JB/T82.4-1994
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
DIN2630, DIN2631, DIN2632, DIN2633, DIN2634, DIN2635, DIN2636, DIN2637, DIN2638
BS1560-3.1-1989, BS4504-3.1-1989
AFNOR NF E29-200-1-2007
ISO7005-1-1992
AS2129-2000
JIS B2220-2004
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