Description
API 6A double studded adapter/wellhead double flange and adapter
Double Studded Adapter Flange (DSAF) or Double Studded Adapter (DSA) is a flange with a through bore and a ring groove on each side, drilled and tapped bolt hole sets on both sides and tapped end studs complete with nuts fitted on both sides. Unlike a spacer, the two sides are usually different in size and/or pressure rating. Double studded adapter flanges are commonly utilised to connect and adapt flanges with different nominal sizes, pressure ratings, and configurations.
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Product Name
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Double Studded Adapter Flange
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Working Pressure
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2000 ~15000psi
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Working Medium
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oil,natural gas,mud and gas containing H2S,CO2
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Working Temperature
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-46°C~121°C(Class LU)
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Material Class
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AA,BB,CC,DD,EE,FF,HH
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Specification level
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PSL1-4
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Performance class
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PR1 – PR2
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DSAF Description
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Flange thickness (T) (mm)
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2 1/16″ x 5M To 3 1/8″ x 5M
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70
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2 1/16″ x 10M To 4 1/16″ x 10M
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80
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3 1/16″ x 10M To 4 1/16″ x 10M
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130
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3 1/16″ x 10M To 4 1/16″ x 5M
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80
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4 1/16″ x 5M To 2 1/16″ x 5M
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75
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4 1/16″ x 5M To 3 1/8″ x 5M
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83
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4 1/16″ x 2M To 4 1/16″ x 5M
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80
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7 1/16″ x 10M To 13 5/8″ x 10M
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170
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7 1/16″ x 5M To 13 5/8″ x 5M
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150
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11″ x 15M To 18 3/4″ x 15M
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256
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11″ x 5M To 13 5/8″ x 5M
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144
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13 5/8″ x 10M To 11″ x 10M
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267
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13 5/8″ x 3M To 16 3/4″ x 2M
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150
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13 5/8″ x 5M To 18 3/4″ x 15M
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256
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18 3/4″ x 15M To 20 3/4″ x 3M
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270
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20 3/4″ x 3M To 18 3/4″ x 15M
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256
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21 1/4″ x 2M To 18 3/4″ x 15M
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256
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