Forged Flanges
FORGED FLANGES
We are forged flanges manufacturer, supplier and exporter for a wide range of quality industrial forged steel pressure flanges including welding neck flange, slip-on flanges, socket weld flanges, blind flanges and other shapes for connection applications in the oil, gas, chemical, wind, pharmaceutical and other industries, manufactured in accordance with ASME , DIN, JIS, GB, ANSI, GOST, EN, BS and other engineering standards.
Forged Flanges Types
Pipe flange facing of america system, ring joint face except raised face, large or smalltongue face and groove face, large or smallmale face and female face, all can be manufactured according to standard.
Orifice flange equipped with orifice plate is used to measure the flow.Theere are two symmetrical, radial through holes in flange which is parallel to the sealed face.The distance to the sealed face is 0.94inch(23.9mm). They are equipped with two plugs of size NPT 1/2 mating the threaded hole in the outer end. The diameter of through holes as following.
Forged Flanges Type：
SW;WN;SO;BL;LJ;TH ; FF,RTJ
Forged Flanges Forming:
Forged
Forged Flanges Size:
1/2”—120”
Forged Flanges Standard:
GB9112~9124, GB13402, SH3406, HG20615~20623, HG20592~20605, JB74~90, ISO7005-I, ASME/ASNI B16.5/16.36/16.47A/16.47B, MSS SP44, JIS B2220-2001, DIN 2527/2636/2637/2638/2566/2576/2632/2633/2635/2642/2653/2655/2656, DIN2628/DIN2629, DIN2634 , BS 1560-3.1, BS4504-3.1, API 7S-15, API 7S-43, API 605, NFE 29-203 GOST12821 GOST 12820
Forged steel flanges Rating:
ANSI 150LBS~2500LBS
DIN PN6~PN400
JIS 5K~30K
HG PN0.25~PN25
PN2.0~PN42.0
Forged Flanges Material:
Stainless Steel ：
OCr18Ni9, 0Cr18Ni9Ti, 1Cr18Ni9Ti, 0Cr18Ni12Mo2Ti, 00Cr19Ni10, 00Cr17Ni14Mo2, ASTM A182-F304, F304L, F304H, F316, F316L, F321, F321H, F347H, F317,
Super Stainless Steel:
ASTM A182-904L, 317, 317L
Duplex Steel：
ASTM A182-F51, F53, F44
Special Steel ：
N06600, N08800, N08811
Alloy Steel：
16Mn, 12CrMo, 15Cr5Mo, Cr5Mo, 12Cr1MoV, ASTM A182-F11, F22, F91 F9 F5
Pipe Line：
ASTM A694-F42, F46, F48, F50, F52, F56, F60, F65, F70, F80
Carbon Steel ：
ASTM A350-LF2, LF3 Q235A, 20#, ASTM A105
Tolerance of flange (ASME /ANSI standard)
|
Thread ,Socket-welding,Slip-on, Lap joint and Blind flange Tolerence |
Welding neck raised face flange tolerence |
||||
|
Outside Diameter |
≦ 24" |
±1.6mm |
Outside Diameter |
≦ 24" |
±1.6mm |
|
>24" |
±3.2mm |
>24" |
±3.2mm |
||
|
Inside Diameter |
Threaded |
Within limits on boring gauge |
Inside Diameter |
≦10” |
±0.8mm |
|
Socket-welding |
ID≦10" +0.8mm ID≧12" +1.6mm |
<20”</span> |
±1.6mm |
||
|
Slip on |
≧20” |
-1.6mm +3.2mm |
|||
|
Lap joint |
Diameter of hu at base |
≦24” |
±1.6mm |
||
|
Outside Diameter of Hub |
≦ 5" |
+2.4mm -0.8mm |
>24” |
±3.2mm |
|
|
≧ 6" |
+ 4.0mm -0.8mm |
Diameter of hub at point of welding |
≦ 5" |
-0.8mm +2.4mm |
|
|
Diameter of contact face |
1/16” raised face |
±0.8mm |
≧ 6" |
-0.8mm +4.0mm |
|
|
1/4” raised face tongue&groove male,female |
±0.4mm |
Diameter of contact face |
1/16” raised face |
±0.8mm |
|
|
Diameter of counterbore |
Same as for inside diameter |
1/4” raised face tongue&groove male,female |
±0.4mm |
||
|
Drilling |
Bolt circle |
±1.6mm |
Drilling |
Bolt circle |
±1.6mm |
|
Bolt hole spacing |
±0.8mm |
Bolt hole spacing |
±0.8mm |
||
|
Eccentricity of bolt circle with respect to facing |
<2-1/2”</span> Max 0.8mm ≧3” Max 1.6mm |
Eccentricity of bolt circle with respect to facing |
<2-1/2”</span> Max 0.8mm ≧3” Max 1.6mm |
||
|
Eccentricity of bolt circle with respect to bore |
Max 0.8mm |
Eccentricity of bolt circle with respect to bore |
Max 0.8mm |
||
|
Eccentricity of facing with respect to bore |
Max 0.8mm |
Eccentricity of facing with respect to bore |
Max 0.8mm |
||
|
Thickness |
≦18” |
0- +3.2mm |
Thickness |
≦18” |
1- +3.2mm |
|
≧20” |
0- +4.8mm |
≧20” |
1- +4.8mm |
||
|
Length thru hub |
≦10” |
±1.6mm |
Length thru hub |
≦10” |
±1.6mm |
|
≧12” |
±1.6mm |
≧12” |
±1.6mm |
||
Contact : ZHANG LUCY , 86 577 86868069
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