" To Take Care of Your Expansion and Contraction Problems" 

The Bellows and expansion joints are being manufactured based on proven technology used world wide to meet various applications in the industry. The product sizes range from 14mm to 400mm inner dia in circular Bellows. The expansion joints with single and multi ply with necessary accessories and fittings are part of the product range. The Bellows and expansion joints can be tailor made to meet specific requirements of the customer within the available product range.

The objective of our company is to produced high quality products at competitive prices.

Bellows expansion joints are designed as per EJMA standard. Bellows expansion joints are employed in piping systems to absorb differential thermal expansion while containing the system pressure. They are being used in refineries, chemical plants, nuclear power systems, heating and cooling systems etc.

Expansion BellowsTypes of Bellows

Circular Bellow (Standard Range)

Square Bellow (On Special Request)

Rectangular Bellow (On Special Request)

Types of Expansion Joints

Single Expansion Joints

Single tied Expansion Joints

Hinged Expansion Joints

Expansion BellowsGimbal Expansion Joints

Universal Expansion Joints

Tied Universal Expansion Joints

Pressure Balanced Expansion Joints

In-Line Pressure Balanced Expansion Joints

Types of End Fittings

Fixed Flange

Welded End

Vanstone Flange/Floating Flange

TECHNICAL DIMENSIONS FOR DIFFERENT SIZES OF BELLOWS

SIZE

PN.06

PN.10

PN.16

PN.25

DN

ID

OD

Lt

N

m/conv

Lt

N

m/conv

Lt

N

m/conv

Lt

N

m/conv

1/2"

13

16.50

22.60

63

14

0.55

54

11

0.55

62

13

0.40

63

13

0.30

5/8"

16

17.50

24.50

63

17

0.55

63

13

0.50

68

14

0.40

58

11

0.40

3/4"

20

22.50

31.90

64

11

0.95

69

12

0.10

71

12

0.60

82

14

0.45

1"

25

28.50

40.40

88

14

1.05

84

12

1.30

81

12

1.05

75

10

1.00

11 /4"

32

35.50

49.40

86

11

1.45

84

10

1.80

87

10

1.58

106

12

1.05

11/2"

40

43.00

58.00

90

11

1.60

88

10

1.90

91

10

1.55

110

12

1.15

2"

50

56.00

78.00

70

6

3.10

83

7

3.20

74

6

3.00

87

7

2.35

21/2"

65

72.00

96.00

74

6

3.65

132

10

3.00

112

8

2.00

91

6

2.65

3"

80

87.00

112.00

111

8

3.20

140

10

3.30

107

7

2.85

96

6

2.90

4"

100

112.00

140.00

115

8

3.85

117

8

2.95

111

7

3.75

115

7

2.95

5"

125

138.00

170.00

141

9

4.00

116

7

3.55

108

6

4.65

111

6

3.65

6"

150

166.00

202.00

140

8

4.85

116

6

6.20

134

7

4.85

137

7

3.90

8"

200

216.00

258.00

158

8

5.60

187

9

5.90

152

7

5.50

155

7

4.60

10"

250

270.00

320.00

193

9

6.65

185

8

7.90

146

6

7.20

172

7

5.50

12"

300

320.00

370.00

223

10

6.10

237

10

7.10

195

8

6.60

251

10

4.75

The above information is subject to change without notice due to continuous development and research.

DN

- Nominal Diameter in inch/mm

ID

- Inside diameter in mm

OD

- Outside diameter in mm

Lt

- Total length in mm

N

- No. of Convolution

m/conv

- Axial Movement Per Convolution in mm

PN.XX

- Working Pressure in Kg/sq.cm

P

- Pitch

Lf

- Flexible length

Ln

- Neck length

Tolerance for inner dia and outer dia ± 0.5mm upto 1.5 inches.
Tolerance for inner dia and outer dia ± 1 mm from 2 inches to 12 inches.

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