Global technology leader in the manufacture of wire and fibre rope solutions

Offshore Exploration Drilling Rigs - Marine Riser Tensioner Lines

Dyform Bristar 6x37 Class

Benefits:

  • Superior abrasion & wear resistance
  • Crush resistant
  • Corrosion protected IWRC
  • Even load distribution
  • Reduced internal friction
  • Accurate diameter tolerance
  • Increased bend fatigue
  • Improved torsional stability
  • Enhanced strength to diameter ratio

The constant cycling of marine riser tensioner ropes over sheaves demands that ropes used for this application are flexible and highly-resistant to
bend fatigue.

Dyform rope construction reduces sheave wear and point loading which combined with the superior dynamic structural stability provided by the Bristar® core delivers exceptional performance and sets the standard for marine riser tensioner applications.

High performance rope technology for critical Oil & Gas applications, Bridon the benchmark for reliability.

  • Power Checked
  • Fatigue Checked
  • Quality Assured

Rope Diameter

Approximate Mass

Minimum Breaking Force (Fmin)

Axial stiffness @20% load

Torque Generated at 20% Load

Metallic cross section

In air

EIPS/1770 grade

Lang’s Lay

in

mm

kg/m

lbs/ft

kN

Tonnes

Tons

MN

Mlbs

kN.m

lbs.ft

mm2

in2

44

8.62

5.79

1456

148

164

103

23

1.4

1030

1004

1.56

1 3/4

44.5

8.79

5.91

1486

152

167

105

24

1.4

1062

1024

1.59

1 7/8

47.6

10.1

6.78

1704

174

191

121

27

1.8

1304

1174

1.82

48

10.3

6.89

1733

177

195

123

28

1.8

1337

1194

1.85

2

50.8

11.5

7.72

1941

198

218

138

31

2.1

1585

1338

2.07

52

12.0

8.09

2034

207

228

144

32

2.3

1700

1402

2.17

2 1/8

54

13.0

8.72

2194

224

246

156

35

2.6

1904

1512

2.34

56

14.0

9.38

2359

240

265

167

38

2.9

2124

1626

2.52

2 1/4

57.2

14.5

9.77

2370

242

266

174

39

3.0

2177

1693

2.62

2 3/8

60.3

16.2

10.9

2639

269

296

194

44

3.5

2558

1885

2.92

2 1/2

63.5

17.9

12.1

2926

298

329

215

48

4.1

2987

2090

3.24

64

18.2

12.2

2972

303

334

219

49

4.1

3058

2123

3.29

2 5/8

66.7

19.8

13.3

3229

329

363

238

53

4.7

3462

2306

3.57

2 3/4

69.9

21.7

14.6

3546

361

398

261

59

5.4

3984

2533

3.93

2 7/8

73.0

23.7

15.9

3867

394

434

285

64

6.2

4538

2762

4.28

3

76.2

25.8

17.4

4214

430

473

310

70

7.0

5161

3010

4.67

Note: Tonnes = 1000kg ­ Tons = 2000lbs
Figures shown are for guidance purposes only. For specific applications requirements please contact Bridon.

This table is for guidance purposes only with no guarantee or warranty (express or implied) as to its accuracy. The products described may be subject to change without notice, and should not be relied on without further advice from Bridon. View the full disclaimer here.