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Home > Machined Parts > Mechanical Processing Parts > Large Diametrer Forged Steel Flanges

Large Diametrer Forged Steel Flanges
Category: Mechanical Processing Parts
Master Model: N/A
Drawing No.: N/A
Quantity: - + EA
Price: Inquiry
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If you need a specific Large Diametrer Forged Steel Flanges firmware or series. Please call or email us your request.

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Class125 American Standard
Welding Neck & Slip-on Flanges 
ASTMA181-GRADEL

NPS 

26"

28"

30"

32"

34"

36"

38"

40"

42"

44"

DN

650

700

750

800

/

900

/

1000

/

1100

Flange Outside Diameter

O

34.2
 870

36.5
 927

38.75
 984

41.75
 1061

43.75
 1111

46
 1169

48.75
 1238

50.75
 1289

53
 1346

55.25
 1404

Flange Thickness

T

2
 50.8

2.06
 52.4

2.12
 54

2.25
 57.2

2.31
 58.7

2.38
 50.3

2.38
 60.3

2.5
 63.5

2.62
 66.7

2.62
 66.7

Diam of raised face

R

29.25
 743

31.25
 794

33.75
 857

35.75
 908

40.25
 1022

42.25
 1073

44.25
 1124

47
 1194

49
 1245

51
 1295

Bore

Welding Neck

B

/

As

Specified

By

Purchaser

/

/

/

/

/

Slip-on

C

26.25
 666.8

28.25
 717.6

30.25
 768.25

32.35
 819.2

34.25
 870

36.25
 920.8

38.25
 971.6

40.25
 1022.4

42.25
 1072.2

44.25
 1124

Length Thru Hub

Welding Neck

F

5
 127

5.06
 128.6

5.12
 130

5.25
 133.4

5.31
 134.9

5.38
 136.5

5.38
 136.5

5.5
 139.7

5.62
 142.9

5.62
 142.9

Slip-on

G

3.38
 85.7

3.44
 87.3

3.5
 88.9

3.62
 92.1

3.69
 93.7

3.75
 95.3

3.75
 95.3

3.88
 98.4

4
 101.6

4
 101.6

Diameter of Hub

At Base

M

28.5
 723.9

30.75
 781.1

32.75
 831.9

35
 889

37
 939.8

39.25
 997

41.75
 1060.5

43.75
 1111.3

46
 1168.4

48
 1219.2

At point of Welding

N

26
 660

28
 711

30
 762

32
 813

34
 864

36
 914

38
 965

40
 1016

42
 1067

44
 1118

Drilling

NO. of Holes


24

28

28

28

32

32

32

36

36

40

Diam of Holes

J 

1.38
 35

1.38
 35

1.38
 35

1.62
 41

1.62
 41

1.62
 41

1.62
 41

1.62
 41

1.62
 41

1.62
 41

Diam of bolt circle

K

31.75
 806.5

34
 863.6

36
 914.4

38.5
 977.9

40.5
 1028.7

42.75
 1085.9

45.25
 1149.4

47.25
 1200.2

49.5
 1257.3

51.75
 1314.5

Approx weight(kg)

Welding Neck


126

143

162

196

209

236

271

295

335

352

Slip-on


106

124

136

169

185

207

236

259

297

313














NPS 

46"

48"

50"

52"

54"

60"

66"

72"

84"

96"

DN

/

1200

/

1300

1400

1500

/

1800

/

2400

Flange Outside Diameter

O

57.25
 1289

59.5
 1511

61.75
 1569

64
 1626

66.25
 1683

73
 1854

80
 2032

86.5
 2197

99.75
 2534

113.25
 2877

Flange Thickness

T

2.69
 683

2.75
 69.9

2.75
 69.9

2.88
 73

3
 76.2

3.12
 79.4

3.38
 85.7

3.5
 88.9

3.88
 98.4

4.25
 108

Diam of raised face

R

53.5
 1359

53.5
 1359

55.5
 1410

57.5
 1461

59.75
 1518

66
 1676

73
 1855

79.5
 2019

92.5
 2350

105.5
 2680

Bore

Welding Neck

B

/

/

/

/

/

/

/

/

/

/

Slip-on

C

46.25
 1174.8

48.25
 1225.6

50.25
 1276.4

52.25
 1327.2

54.25
 1378

60.25
 1530.4

66.25
 1682.8

72.25
 1825.2

84.25
 2140

96.25
 2444.8

Length Thru Hub

Welding Neck

F

5.69
 144.5

5.75
 146.1

5.75
 146.1

5.88
 149.2

6
 152.4

6.12
 155.6

6.38
 161.9

6.5
 165.1

6.88
 174.6

7.25
 184.2

Slip-on

G

4.06
 103.2

4.12
 104.8

4.12
 104.8

4.25
 108

4.38
 111.1

4.5
 114.3

4.88
 123.8

5
 127

5.38
 136.5

5.75
 146.1

Diameter of Hub

At Base

M

50
 1270

52.5
 1327.2

54.25
 1378

56.5
 1435.1

58.75
 1492.3

65.25
 1657.4

71.5
 1816.1

78.5
 1993.9

90.5
 2298.7

102.75
 2609.9

At point of Welding

N

46
 1168

48
 1219

50
 1270

52
 1321

54
 1372

60
 1524

66
 1676

72
 1829

84
 2134

96
 2438

Drilling

NO. of Holes


40

44

44

44

44

52

52

60

64

68

Diam of Holes

J 

1.62
 41

1.62
 41

1.88
 48

1.88
 48

1.88
 48

1.88
 48

1.88
 48

1.88
 48

2.12
 54

2.38
 61

Diam of bolt circle

K

53.75
 1365.3

56
 1422.4

58.25
 1479.6

60.5
 1536.7

62.75
 1593.9

69.25
 1759

76
 1930.4

82.5
 2095.5

95.50
 2425.7

108.5
 2755.9

Approx weight(kg)

Welding Neck


375

407

421

467

516

628

797

956

1271

1724

Slip-on


329

365

378

416

468

578

731

878

1179

1560

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