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API Spec 7K Rotary drilling hose
Introduction
Rotary hose applications on workover rigs and slim hole or seismograph rigs designed to operate at a maximum of 3000 psi rated working pressure. Applications on a small or medium size drilling rigs used for water well operations, water well core drill, blast or shot hole operations. Hoses are flexible connections in pressure lines used in conveying mud or air. For normal air or mud applications and where increased resistance to external abused or pump pulsations is required.
Construction
Temperature range: -40C to +120C
Tube: black oil resistant synthetic rubber
Reinforcement: four or six alternating layers of spiraled, high tensile steel wire over a layer of fabric
Cover: Black, oil resistant synthetic rubber
Length: as requested
Sheet of the API 7K high pressure rotary drilling hose/pipe/tube
I.D-layer |
I.D |
Steel layer |
O.D |
Working Pressure |
Exemine Pressure |
Burst Pressure |
Min Bend Radius (mm) |
Weight |
51×4sp |
51±1.0 |
64.4±1.0 |
69±1.5 |
35 |
70 |
87.5 |
900 |
5.7 |
64×4sp |
64±1.2 |
79±1.0 |
84±1.5 |
35 |
70 |
87.5 |
1100 |
6.7 |
76×4sp |
76±1.4 |
102±1.5 |
107±2 |
35 |
70 |
87.5 |
1200 |
16.2 |
89×4sp |
89±1.4 |
114±1.5 |
120±2 |
35 |
70 |
87.5 |
1300 |
18.4 |
102×4sp |
102±1.5 |
130±1.5 |
137±2 |
35 |
70 |
87.5 |
1400 |
20.3 |
51×6sp |
51±1.0 |
68±1.0 |
73±1.5 |
70 |
140 |
175 |
1000 |
6.2 |
64×6sp |
64±1.2 |
84±1.0 |
89±1.5 |
70 |
140 |
175 |
1200 |
7.4 |
76×6sp |
76±1.4 |
112±1.5 |
117±2 |
70 |
140 |
175 |
1300 |
23.7 |
89×6sp |
89±1.4 |
122±1.5 |
129±2 |
70 |
140 |
175 |
1400 |
26.6 |
102×6sp |
102±1.5 |
140±1.5 |
146±2 |
70 |
140 |
175 |
1600 |
29.8 |
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