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Pipeline flanges

Normal pressure

Type of general products

ASME B 16.5

Class 150

H71H-A1C

H71W-A1P8

H71W-A1P3

H71W-A1R8

H71W-A1R3

Class 300

H71H-A3

H71W-A3P8

H71W-A3P3

H71W-A3R8

H71W-A3R3

Class 600

H71H-A6

H71W-A6P8

H71W-A6P3

H71W-A6R8

H71W-A6R3

Class 900

H71H-A9

H71W-A9P8

H71W-A9P3

H71W-A9R8

H71W-A9R3

PN 10

H71H-10C

H71W-10P8

H71W-10P3

H71W-10R8

H71W-10R3

PN 16

H71H-16C

H71W-16P8

H71W-16P3

H71W-16R8

H71W-16R3

PN 25

H71H-25

H71W-25P8

H71W-25P3

H71W-25R8

H71W-25R3

PN 40

H71H-40

H71W-40P8

H71W-40P3

H71W-40R8

H71W-40R3

PN 63

H71H-63

H71W-63P8

H71W-63P3

H71W-63R8

H71W-63R3

PN 100

H71H-100

H71W-100P8

H71W-100P3

H71W-100R8

H71W-100R3

PN 160

H71H-160

H71W-160P8

H71W-160P3

H71W-160R8

H71W-160R3

PN 20

H71H-20C

H71W-20P8

H71W-20P3

H71W-20R8

H71W-20R3

PN 50

H71H-50

H71W-50P8

H71W-50P3

H71W-50R8

H71W-50R3

PN 110

H71H-110

H71W-110P8

H71W-110P3

H71W-110R8

H71W-110R3

PN 150

H71H-150

H71W-150P8

H71W-150P3

H71W-150R8

H71W-150R3

Body

ASTM A216 WCB (ASTM A105)

ASTM A351 CF8 (ASTM A182 F304)

ASTM A351 CF3 (ASTM A182 F304L)

ASTM A351 CF8M (ASTM A182 F316)

ASTM A351 CF3M (ASTM A182 F316L)

Disc

ASTM A182 F6

ASTM A182 F304

ASTM A182 F304L

ASTM A182 F316

ASTM A182 F316L

Stem

ASTM A182 F6

ASTM A182 F304

ASTM A182 F304L

ASTM A182 F316

ASTM A182 F316L

Spring

304

304

304L

316

316L

Applicable medium

Water.steam.oil etc.

Nitric acid medium (corrosive)

Strong oxidizing medium

Acetic acid medium (corrosive)

Urea medium (corrosive)

Applicable Temperature

~29°C ~ 425°C

-196°C ~ 540 °C

-196°C ~ 425°C

-196°C ~ 540°C

-196°C ~ 455°C

Note: The above list is the type coding system, material of main parts and applicable working condition for general wafer type check valve. Please refer to the type coding system of wafer type check valve with other requirment.

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