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B2B Services
FORGED FLANGES
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Thread ,Socket-welding,Slip-on, Lap joint and Blind flange Tolerence |
Welding neck raised face flange tolerence |
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Outside Diameter |
≦ 24" |
±1.6mm |
Outside Diameter |
≦ 24" |
±1.6mm |
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>24" |
±3.2mm |
>24" |
±3.2mm |
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Inside Diameter |
Threaded |
Within limits on boring gauge |
Inside Diameter |
≦10” |
±0.8mm |
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Socket-welding |
ID≦10" +0.8mm ID≧12" +1.6mm |
<20”</span> |
±1.6mm |
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Slip on |
≧20” |
-1.6mm +3.2mm |
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Lap joint |
Diameter of hu at base |
≦24” |
±1.6mm |
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Outside Diameter of Hub |
≦ 5" |
+2.4mm -0.8mm |
>24” |
±3.2mm |
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≧ 6" |
+ 4.0mm -0.8mm |
Diameter of hub at point of welding |
≦ 5" |
-0.8mm +2.4mm |
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Diameter of contact face |
1/16” raised face |
±0.8mm |
≧ 6" |
-0.8mm +4.0mm |
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1/4” raised face tongue&groove male,female |
±0.4mm |
Diameter of contact face |
1/16” raised face |
±0.8mm |
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Diameter of counterbore |
Same as for inside diameter |
1/4” raised face tongue&groove male,female |
±0.4mm |
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Drilling |
Bolt circle |
±1.6mm |
Drilling |
Bolt circle |
±1.6mm |
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Bolt hole spacing |
±0.8mm |
Bolt hole spacing |
±0.8mm |
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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 |
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Eccentricity of bolt circle with respect to bore |
Max 0.8mm |
Eccentricity of bolt circle with respect to bore |
Max 0.8mm |
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Eccentricity of facing with respect to bore |
Max 0.8mm |
Eccentricity of facing with respect to bore |
Max 0.8mm |
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Thickness |
≦18” |
0- +3.2mm |
Thickness |
≦18” |
1- +3.2mm |
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≧20” |
0- +4.8mm |
≧20” |
1- +4.8mm |
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Length thru hub |
≦10” |
±1.6mm |
Length thru hub |
≦10” |
±1.6mm |
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≧12” |
±1.6mm |
≧12” |
±1.6mm |
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WENZHOU HUASHANG STEEL CO., LTD is a professional forged flanges manufacturer. We provide Stainless Steel Tubing, Butt Weld Fittings, forged steel flanges and so on. Want to know more? Please contact us.
Good deal: buying from seller
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