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Phone:19905158858

Fax:86 - 515 – 86582386
E-mail:sale@chinateda.com
Add:Hengji Town, Jianhu County, Yancheng City, Jiangsu Province

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Casing coupling

The tubing coupling of Teda Special Pipe Fittings Co., Ltd. is manufactured in accordance with API 5CT standard. Materials steel grade is H40, J55, K55, M65, N80, L80, C90, T95, P110, Q125. The outer diameter of tubing and casing is in the range of 41/2"~20".

Length and Short Round Thread Casing Couplings Dimensions

 

Nominal size
external diameter

external diameter

Minimum length

Boring diameter

Bearing surface width

standard

Short coupling

Long collar

in

mm

W mm

NS mm

NL mm

Q mm

b mm

4-1/2

114.3

127.00

158.75

177.80

116.68

3.97

5

127.00

141.30

165.1

196.85

129.38

4.76

5-1/2

139.70

153.67

171.45

203.20

142.08

3.18

6-5/8

168.28

187.71

184.15

222.25

170.66

6.35

7

177.80

194.46

184.15

228.60

180.18

4.76

7-5/8

193.70

215.9

190.5

234.95

197.64

5.56

8-5/8

219.08

244.48

196.85

254.00

223.04

6.35

9-5/8

244.48

269.88

196.85

266.70

248.44

6.35

10-3/4

273.05

298.45

203.2

-

277.02

6.35

11-3/4

298.45

323.85

203.2

-

302.42

6.35

13-3/8

339.72

365.12

203.2

-

343.69

5.56

16

406.40

431.80

228.6

-

411.96

5.56

18-5/8

473.08

508.00

228.6

-

478.63

5.56

20

508.00

533.40

228.6

292.10

513.56

5.56

Size range of tubular threaded sleeve coupling is 41/2 "to 95/8"

It can be manufactured according to the standard parameters provided by customers.

Size of Inclined Trapezoidal Thread Casing Couplings


Nominal size
 
external diameter

external diameter

Minimum length

Boring diameter

Bearing surface width

Standard coupling

Special clearance coupling

in

mm

W mm

WC mm

NL mm

Q mm

b mm

4-1/2

114.3

127.00

123.82

225.42

117.86

3.18

5

127.00

141.30

136.52

231.78

130.56

3.97

5-1/2

139.70

153.67

149.22

234.95

143.26

3.97

6-5/8

168.28

187.71

177.8

244.48

171.83

6.35

7

177.80

194.46

187.32

254.00

181.36

5.56

7-5/8

193.70

215.9

206.38

263.52

197.23

7.94

8-5/8

219.08

244.48

231.78

269.88

222.63

9.52

9-5/8

244.48

269.88

257.18

269.88

248.03

9.52

10-3/4

273.05

298.45

285.75

269.88

276.61

9.52

11-3/4

298.45

323.85

-

269.88

302.01

9.52

13-3/8

339.72

365.12

-

269.88

343.28

9.52

16

406.40

431.80

-

269.88

410.31

9.52

18-5/8

473.08

508.00

-

269.88

476.99

9.52

20

508.00

533.40

-

269.88

511.91

9.52

It can be manufactured according to the standard parameters provided by customers.

 

Unthickened tubing coupling dimensions


Nominal size
 
external diameter

external diameter

Minimum length

Boring diameter

Bearing surface width

Maximum bearing surface diameter of special chamfer

in

mm

W mm

NL mm

Q mm

b mm

Bf mm

1.05

26.67

33.35

80.96

28.27

1.59

30

1.315

33.4

42.16

82.55

35

2.38

37.8

1.66

42.16

52.17

88.9

43.76

3.18

47.17

1.9

48.26

55.88

95.25

49.86

1.59

52.07

2-3/8

60.32

73.02

107.95

61.93

4.76

66.68

2-7/8

73.02

88.9

130.18

74.63

4.76

80.98

3-1/2

88.9

107.95

142.88

90.5

4.76

98.42

4

101.6

120.65

146.05

103.2

4.76

111.12

4-1/2

114.3

132.08

155.58

115.9

4.76

123.19

It can be manufactured according to the standard parameters provided by customers.

 

Externally Thickened Tubing Couplings Dimensions


Nominal size
 
external diameter

external diameter

Minimum length

Boring diameter

Bearing surface width

Maximum bearing surface diameter

kg

Standard and special chamfered coupling

Special clearance coupling

Special chamfered coupling

Special clearance coupling

Standard coupling

Special clearance coupling

  in

mm

W mm

Wc mm

NL mm

Q mm

mm

mm

mm

1.050

26.67

42.16

-

82.55

35.00

2.38

37.80

-

0.38

-

1.315

33.40

48.26

-

88.90

38.89

2.38

42.77

-

0.57

-

1.660

42.16

55.88

-

95.25

47.63

3.18

50.95

-

0.68

-

1.900

48.26

63.50

-

98.42

54.76

3.18

58.34

-

0.84

-

2-3/8

60.32

77.8

73.91

123.82

67.46

3.97

71.83

69.90

1.55

1.07

2-7/8

73.02

93.17

87.88

133.35

80.16

5.56

85.88

83.24

2.40

1.55

3-1/2

88.90

114.3

106.17

146.05

96.85

6.35

104.78

100.71

4.10

2.38

4

101.60

127.00

-

152.40

109.55

6.35

117.48

-

4.82

-

4-1/2

114.30

141.3

-

158.75

122.25

6.35

130.96

-

6.05

-