Built-in Rotary and Vibrator HoseType:NJG-SZ / NNG-SZ

Built-in Rotary and Vibrator Hose

The built-in rotary hose is the flexible connection between the drilling machine and the water faucet for vertical movement, as shown in the following picture.
The vibrator hose is a flexible connection between the slurry pump and the vertical pipe with an exceptional vibration absorption.

Production Standard:

API Spec 7K / ISO 6807 / GB/T 24145

API Standard:

7K-0458

Temperature Range:

Ⅱ级 ， -25 至+100 ℃

Fire Protection Requirements:

The normal hose structure meets SR6A standards and is able to maintain for up to 5 minutes in a 704℃ fire. The outer cover can be equipped with an added fire insulation layer (glass fiber cloth) which meets SR6B standards for fire protection and maintains up to 30 minutes in a 704℃ fire.

Construction:
  • Composite rubber as the inner sealing tube, mainly composed of nitrile rubber with an excellent oil, seawater, and thermal resistance.
  • Protective layer made of a high strength fabric cloth
  • Skeleton material made of a high strength helix steel wire
  • Composite rubber cover layer, made of a chloroprene rubber for an outstanding fire protection, oil, abrasion, ozone, and aging resistance.
  • Optional electric heating tracing feature
  • Optional stainless-steel armored cover, stainless steel wire, and polyethylene helix cover according to specific requirements
  • Flexibility Level: FSL2
  • Maximum Length: 70m
  • Production Length Tolerance: 6.4m or under ± 64 mm, above 6.4m ± 1％
  • The minimum bending radius is measured according to the hose central line
BOP Hydraulic Hose
BOP Hydraulic Hose
NJG-SZ / NNG-SZ Technical Parameters:
Code No. API Level I.D. (inch) (mm)  O.D. (inch) (mm)  Working Pressure (bar) (psi)  Test Pressure (bar) (psi)  Flame Shield Safety Factor FSL  MBR (storage) (m)  MBR (operation) (m) Weight (Kg/m)  Max. Length (m) 
NJG-SZ-51×34.5 D 2 51 3.58 91 345 5,000 517 7,500 No 2.5 FSL2 0.8 0.9 11.24 70
NNG-SZ-51×34.5 D 2 51 4.17 106 345 5,000 517 7,500 Yes 2.5 FSL2 0.8 0.9 15 70
NJG-SZ-64×34.5 D 2.5 64 4.06 103 345 5,000 517 7,500 No 2.5 FSL2 0.8 0.9 13 70
NNG-SZ-64×34.5 D 2.5 64 4.65 118 345 5,000 517 7,500 Yes 2.5 FSL2 0.8 0.9 16 70
NJG-SZ-76×34.5 D 3 76 4.72 120 345 5,000 517 7,500 No 2.5 FSL2 1.1 1.2 18 70
NNG-SZ-76×34.5 D 3 76 5.28 134 345 5,000 517 7,500 Yes 2.5 FSL2 1.1 1.2 20 70
NJG-SZ-89×34.5 D 3.5 89 5.28 134 345 5,000 517 7,500 No 2.5 FSL2 1.2 1.3 21 70
NNG-SZ-89×34.5 D 3.5 89 5.75 146 345 5,000 517 7,500 Yes 2.5 FSL2 1.2 1.3 25 70
NJG-SZ-102×34.5 D 4 102 6.3 160 345 5,000 517 7,500 No 2.5 FSL2 1.2 1.4 35 70
NNG-SZ-102×34.5 D 4 102 6.8 173 345 5,000 517 7,500 Yes 2.5 FSL2 1.2 1.4 38 70
NJG-SZ-127×34.5 D 5 127 7.52 191 345 5,000 517 7,500 No 2.5 FSL2 1.4 1.5 51 70
NNG-SZ-127×34.5 D 5 127 8.07 205 345 5,000 517 7,500 Yes 2.5 FSL2 1.4 1.5 56 70
NJG-SZ-152×34.5 D 6 152 8.82 224 345 5,000 517 7,500 No 2.5 FSL2 1.6 1.8 57 70
NNG-SZ-51×51.7 E 2 51 4.06 103 517 7,500 776 11,250 No 2.5 FSL2 1.1 1.2 19 70
NJG-SZ-64×51.7 E 2.5 64 4.88 124 517 7,500 776 11,250 No 2.5 FSL2 1.1 1.2 28 70
NNG-SZ-64×51.7 E 2.5 64 5.35 136 517 7,500 776 11,250 Yes 2.5 FSL2 1.1 1.2 31 70
NJG-SZ-76×51.7 E 3 76 5.43 138 517 7,500 776 11,250 No 2.5 FSL2 1.2 1.3 31 70
NNG-SZ-76×51.7 E 3 76 5.98 152 517 7,500 776 11,250 Yes 2.5 FSL2 1.2 1.3 35 70
NJG-SZ-89×51.7 E 3.5 89 5.94 151 517 7,500 776 11,250 No 2.5 FSL2 1.3 1.4 38 70
NNG-SZ-89×51.7 E 3.5 89 6.57 167 517 7,500 776 11,250 Yes 2.5 FSL2 1.3 1.4 42 70
NJG-SZ-102×51.7 E 4 102 6.61 168 517 7,500 776 11,250 No 2.5 FSL2 1.4 1.5 44 70
NNG-SZ-102×51.7 E 4 102 7.17 182 517 7,500 776 11,250 Yes 2.5 FSL2 1.4 1.5 50 70
NJG-SZ-127×51.7 E 5 127 8.03 204 517 7,500 776 11,250 No 2.5 FSL2 1.5 1.6 64 70
NNG-SZ-127×51.7 E 5 127 8.58 218 517 7,500 776 11,250 Yes 2.5 FSL2 1.5 1.6 69 70
NJG-SZ-152×51.7 E 6 152 9.76 248 517 7,500 776 11,250 No 2.5 FSL2 1.6 1.8 92 70
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