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Weld neck flange

 

Weld neck flange is normally referred to as the "high hub" Flange. It is designed to transfer stresses to the pipe, thereby reducing high stress concentrations at the base of the Flange. The welding neck flange is the best designed butt-welded flange of those currently available because of its inherent structural value. It is expensive because of the design.

For the face of flange,They are made to standardized dimensions and are typically "flat face", "raised face", "tongue and groove", or "ring joint" styles, although other obscure styles are possible.

Ref: FC01

Name: weld neck flange
Pattern
Figure

size

1/2”-60” (DN15-DN3000)

Pressure class

Class150-Class2500 JIS 5k-30k DIN 6bar-40bar

Facing

 RF/ FM/ M/ T G/ RF / FF / RTJ

Type

Butt Weld slip on flange , Weld Neck Flange Threaded Flange Blind Flange,
Reduce flange Orifice Flange socket weld flange stainless steel flange alloy steel flange alloy flange carbon steel flangestainless steel flange

Material
Carbon SA234 WPB, SA234 WPC,SA42 WPL6, SA42 WPL3, WP1. MSS-SP75
WPHY,WPHY 46,WPHY 52,WPHY 56,WPHY 60,WPHY 65, WPHY 70
DIN 1629 St37, RST37.2 St52
Stainless ASTM/ASME SA403 304,304L ,316, 316L, WP304L, 3 WP316 WP347 (H) ,WP317 (L),WP321.
DIN 1.4301, 1.4306, 1.4401, 1.4571
JIS SUS304,SUS304, SUS304L, SUS316, SUS316L
Alloy ASTM/ASME SA234 WP12, WP11,WP22, WP5, WP9, WP91.
ASTM B361 GR.3003-6061,
ASTM B366 UNS N04400,N08800, N08825 N1001-N10276-N10665, WPT2-WPT12.
ASTM 182 F1, F5, F6, F7, F9, F11, F12, F22, F51.
16MnR Cr5Mo 12Cr1MoV 10CrMo910 15CrMo 12Cr2Mo1, St45.8
Nonferrous Meta Copper, Aluminium,Brass,Titanium, Nickel,Nichrome, Al.Bronze Phosphorous Bronze
Other types
Flanges

Butt Weld slip on flange , Weld Neck Flange Threaded Flange Blind Flange,
Reduce flange Orifice Flange carbon steel flange stainless flange alloy flange

Standards
ASTM

ASME/ANSI B16.1 - 1998 - Cast Iron Pipe Flanges and Flanged Fittings
ASME/ANSI B16.5 - 1996 - Pipe Flanges and Flanged Fittings
ASME/ANSI B16.24 - 1991 (R1998) - Cast Copper Alloy Pipe Flanges and Flanged Fittings
ASME/ANSI B16.36 - 1996 - Orifice Flanges
ASME/ANSI B16.47 - 1996 - Large Diameter Steel Flanges: NPS 26 through NPS 60
ASTM A105 Standard Specification for Carbon Steel Forgings for Piping Applications
ASTM A234 Specification for Piping Fittings of Wrought Carbon Steel and Alloy Steel for
Moderate and High Temperature Service

JIS JIS B 2239:2004 Steel pipe flanges
JIS B 2240:1996 Cast iron pipe flanges
JIS B 2241:1986General rules for copper alloy pipe flanges
JIS B 2290:1998 Basic dimensions of aluminum alloy pipe flanges
EURO

DIN 2527,2573, 2576,2627~2638, 2673,2552,2653, 2655,2656,2641, 2642,2565~2569
DIN 2527,2573, 2576,2627~2638, 2673,2552,2653, 2655,2656,2641, 2642,2565~2569

Application For industry fields use,such as petroleum, power, papermaking, chemical, aviation, boiler heat, exchanger fields.
For electric, shipbuilding, construction fileds
For the foodstuff,medical equipment, and other fields
Further treatment
 

Surface galvanized,antirust coating
Epoxy & PE Coating

 

 

 

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