High-Pressure DIN EN856 4SP Hydraulic Rubber Hose from China Suppliers & Factory for Petroleum Fluids
 I.D
|
 R.O.D.
|
 O.D
|
 MAX W.P.
|
 MIN B.P.
|
 MIN B.R.
|
 WEIGHT
|
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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| metric | inch | Min | Max | Min | Max | Min | Max | bar | psi | bar | psi | mm | kg/m |
| mm | mm | mm | mm | mm | mm | mm | |||||||
| 10.0 | 3/8 | 9.3 | 10.1 | 16.9 | 18.1 | 20.6 | 22.2 | 445 | 6454 | 1780 | 25816 | 180 | 0.78 |
| 12.0 | 1/2 | 12.3 | 13.5 | 19.4 | 21.0 | 23.8 | 25.4 | 415 | 6019 | 1660 | 24076 | 230 | 0.89 |
| 16.0 | 5/8 | 15.5 | 16.7 | 23.0 | 24.6 | 27.4 | 29.0 | 350 | 5076 | 1400 | 20305 | 250 | 1.11 |
| 19.0 | 3/4 | 18.6 | 19.8 | 27.4 | 29.0 | 31.4 | 33.0 | 350 | 5076 | 1400 | 20305 | 300 | 1.59 |
| 25.0 | 1” | 25.0 | 26.4 | 34.5 | 36.1 | 38.5 | 40.9 | 280 | 4061 | 1120 | 16244 | 340 | 2.02 |
| 31.0 | 11/4 | 31.4 | 33.0 | 45.0 | 47.0 | 49.2 | 52.4 | 210 | 3045 | 840 | 12183 | 460 | 3.32 |
| 38.0 | 1 1/2 | 37.7 | 39.3 | 51.4 | 53.4 | 55.6 | 58.8 | 185 | 2683 | 740 | 10732 | 560 | 3.70 |
| 51.0 | 2 | 50.4 | 52.0 | 64.3 | 66.3 | 68.2 | 71.4 | 165 | 2393 | 660 | 9572 | 660 | 5.47 |
Q: What do the abbreviations in the specification table represent?
In the specification table, I.D. stands for Inner Diameter, R.O.D. stands for Reinforcement Outer Diameter, O.D. stands for Outer Diameter, MAX W.P. stands for Maximum Working Pressure, MIN B.P. stands for Minimum Burst Pressure, and MIN B.R. stands for Minimum Bend Radius.
Q: What is the safety factor between Working Pressure and Burst Pressure?
The specifications maintain a standard 4:1 safety factor. For instance, the 10.0 mm hose has a Maximum Working Pressure (MAX W.P.) of 445 bar and a Minimum Burst Pressure (MIN B.P.) of 1780 bar, which is exactly four times the working limit.
Q: How does the Minimum Bend Radius (MIN B.R.) change with the hose size?
As the inner diameter (I.D.) of the hose increases, the Minimum Bend Radius also increases. It ranges from 180 mm for the smallest 10.0 mm (3/8") hose up to 660 mm for the largest 51.0 mm (2") hose to prevent kinking and damage.
Q: Are the pressure units listed in both Metric and Imperial systems?
Yes, both pressure values (Working Pressure and Burst Pressure) are provided in bar (Metric) and psi (Pounds per Square Inch / Imperial) to accommodate international standards and requirements.
Q: How is the weight of the hoses calculated?
The weight is listed in kilograms per meter (kg/m). It ranges from 0.78 kg/m for the 10.0 mm hose to 5.47 kg/m for the 51.0 mm hose, reflecting the increase in raw materials and reinforcement layers for larger sizes.