The working pressure of drilling hose is designed based on the maximum working pressure of drilling machine. The minimum burst pressure of drilling hose is 2.5 times as high as the working pressure. Therefore, even though the pump breaks down, the drilling hose will not burst. The tube of drilling hose is made from nitrile rubber, which can prevent the oil-based mud from permeating out of hose leading to the hose damage in the process of conveying the oil-based mud. Our drilling hose is manufactured with integral connectors and the connectors are resistant to pull-off, which can avoid the connectors falling off and hurting the workers in the process of pressure test. And this feature improves the pressure resistance and safety performance of drilling hose greatly.

 Drilling hose, also called rotary & vibrator drilling hose, is often used as the flexible connectors between the top of drilling standpipe and vertical swivel to transfer water-based mud or oil-based mud. It is often used on small or medium-sized drilling rigs. And it is also used to adjust the installation mistake to avoid shake.

The details of drilling hose:

• Structure: 
  Drilling hose is composed of inner tube, reinforcement and hose cover.
  • Inner tube: oil-resistant, abrasion-resistant and acid & alkali resistant rubber, principally nitrile rubber.
  • Reinforcement: two, four and six spiral layers of high tensile steel wire.
  • Hose cover: weatherproof, anti-aging and ozone resistant rubber, mainly neoprene rubber.
• Inside diameter: 51mm - 102mm.
• Outside diameter: 66mm - 142mm.
• Minimum bend radius: 850mm - 1600mm.
• Temperature range: -4°F to 200°F (-20°C to 90°C).
• Working pressure: 15MPa - 70MPa.
• Burst pressure: 60MPa - 175MP
• Email:

Hebei Huayu Special Rubber Co.,Ltd.

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