BS 3293
Author:    Issue Time:2014-03-25 10:51:14    Type Face:【Large】【Medium】【Small

Class 300,400,600 Carbon Steel pipe flange

unit:mm

Class

Normal pipe size

Outside diameter of flange

Thickness of flange min.

Outside diameter small end of hub

Outside diameter small end of hub

Length through hub

Fillet radius

Flange bore

Drilling

Facing dimensions

Length of stub-bolts

Length of headed bolts

Slip-on

Welding neck

Slip-on and welding neck

Slip-on

Welding neck

Diameter of bolt circle

Number of bolts

Diameter of bolts

Diameter of bolt holes

Raised face

Ring-jiont

Raised face

Ring-joint

Raised face

Ring-joint

Outside diameter

Pitch diameter

Groove width

Depth of groove

Diameter of raised protion

Ring number

Raised face

O

C

X

A1

A2

Y

R

B1

B2

D

R 

P 

F 

class 300

26

971.55

79.38

720.73

687.39

666.75

184.15

9.53

666.75

To be specified by the purchaser

876.30

28

41.28

44.45

749.30

749.30

19.84

12.70

809.63

R93

247.65

279.40

215.90

241.30

28

1035.05

85.73

774.70

739.78

717.55

196.85

11.11

717.55

939.80

28

41.28

44.45

800.10

800.10

19.84

12.70

860.43

R94

260.35

292.10

228.60

254.00

30

1092.20

92.08

825.50

792.16

768.35

209.55

11.11

768.35

996.95

28

44.45

47.63

857.25

857.25

19.84

12.70

917.58

R95

279.40

311.15

241.30

266.70

32

1149.35

98.43

881.06

844.55

819.15

222.25

11.11

819.15

1054.10

28

47.63

50.80

914.40

914.40

23.02

14.29

984.25

R96

298.45

330.20

260.35

285.75

34

1206.50

101.60

936.63

896.94

871.54

231.78

12.70

869.95

1104.90

28

47.63

50.80

965.20

965.20

23.02

14.29

1035.05

R97

304.80

336.55

266.70

292.10

36

1270.00

104.78

990.60

949.33

922.34

241.30

12.70

920.75

1168.40

32

50.80

53.98

1022.35

1022.35

23.02

14.29

1092.20

R98

317.50

349.25

273.05

304.80

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

class 400

26

971.55

88.90

727.08

693.74

668.34

193.68

11.11

666.75

To be specified by the purchaser

876.30

28

44.45

47.63

749.30

749.30

19.84

12.70

809.63

R93

285.75

317.50

 

 

28

1035.05

95.25

782.64

746.13

719.14

206.38

12.70

717.55

939.80

28

47.63

50.80

800.10

800.10

19.84

12.70

860.43

R94

304.80

336.55

 

 

30

1092.20

101.60

836.61

800.10

769.94

219.08

12.70

768.35

996.95

28

50.80

53.98

857.25

857.25

19.84

12.70

917.58

R95

323.85

355.60

 

 

32

1149.35

107.95

889.00

852.49

822.33

231.78

12.70

819.15

1054.10

28

50.80

53.98

914.40

914.40

23.02

14.29

984.25

R96

336.55

374.65

 

 

34

1206.50

111.13

944.56

904.88

873.13

241.30

14.29

869.95

1104.90

28

50.80

53.98

965.20

965.20

23.02

14.29

1035.05

R97

342.90

381.00

 

 

36

1270.00

114.30

1000.13

958.85

925.51

250.83

14.29

920.75

1168.40

32

50.80

53.98

1022.35

1022.35

23.02

14.29

1092.20

R98

349.25

387.35

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

class 600

26

1016.00

107.95

747.71

706.44

671.51

222.25

14.29

666.75

To be specified by the purchaser

914.40

28

47.63

50.80

749.30

749.30

19.84

12.70

809.63

R93

330.20

361.95

 

 

28

1073.15

111.13

803.28

760.41

723.90

234.95

15.88

717.55

965.20

28

50.80

53.98

800.10

800.10

19.84

12.70

860.43

R94

342.90

374.65

 

 

30

1130.30

114.30

862.01

814.39

774.70

247.65

17.46

768.35

1022.35

28

50.80

53.98

857.25

857.25

19.84

12.70

917.58

R95

349.25

381.00

 

 

32

1193.80

117.48

917.58

868.36

825.50

260.35

17.46

819.15

1079.50

28

57.15

60.33

914.40

914.40

23.02

14.29

984.25

R96

368.30

406.40

 

 

34

1244.60

120.65

973.14

922.34

877.89

269.88

19.05

869.95

1130.30

28

57.15

60.33

965.20

965.20

23.02

14.29

1035.05

R97

374.65

412.75

 

 

36

1314.45

123.83

1031.88

976.31

928.69

282.58

19.05

920.75

1193.80

28

63.50

66.68

1022.35

1022.35

23.02

14.29

1092.20

R98

393.70

431.80

 

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Address: 1102#&1202#, Tower A, Dingyuan Times Centre, Yingze  South  Street, Taiyuan, Shanxi,China   P.C. No.: 030001   Contact Person: Ms. Christina   Tel: +86-351-8390068,8390069,8390966   Fax:+86-351-8390070   E-mail: sales@smmcl.com   christina@smmcl.com