High-pressure tubes
Seamless high-pressure tubes for a variety of high-pressure applications using liquid or gas as the pressure medium, such as hydraulic installations, test benches and water-jet cutting equipment.
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Sandvik high-pressure tubes are characterized by high yield strength and high tensile strength in combination with high elongation. The pressure resistance is guaranteed by the very smooth inside surface. An autofrettage treatment prolongs the cycle fatigue behavior.
Materials and properties
| Sandvik grade | UNS | ASTM | EN steel no. | W.Nr. | AFNOR |
|---|---|---|---|---|---|
| Sandvik 5R10 | S30400 | 304 | 1.4301 | 1.4301 | Z2CND18-09 |
| Sandvik 3R65 | S31603/S31600 | 316L/316 | 1.4404/1.4401 | 1.4404 | Z2CND17-12 |
| Sandvik SAF 2507® | S32750 |
-
|
1.4410 |
-
|
-
|
| Sandvik HP160* |
-
|
-
|
-
|
-
|
-
|
| Sandvik 254 SMO | S31254 | - | - | - | Z1CNDU20-18-06AZ |
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| Sandvik grade | Yield strength Rp0,2 min. MPa |
Tensile strength Rm min. MPa |
Elongation A %, min |
|---|---|---|---|
| Sandvik 5R10 1) | 600 | 700 | 18 |
| Sandvik 3R65 1) | 600 | 700 | 18 |
| Sandvik SAF 2507® 2) | 550 | 800-1,000 | 25 |
| Sandvik HP160* 2) | 450 | 850 | 35 |
| Sandvik 254 SMO 2) | 340 | 650 | 65 |
1) Hard condition.
2) Annealed condition. Tubes with higher values can be offered on request.
* Contact us for more information
Sizes and surfaces
Sizes and working pressure
Sandvik high-pressure tubes are manufactured in standard sizes according to the table. Standard lengths are 4-7 meters. Other sizes and lengths up to 16 meters can be offered on request.
| OD | = Outside diameter |
| ID | = Inside diameter |
| WT | = Wall thickness |
| OD mm |
OD in. |
ID mm |
ID in. |
WT mm |
WT in. |
Working pressure
(stat.)1) bar Sandvik 3R65/5R10 |
Working pressure
(stat.) bar Sandvik HP160 |
Weight kg/m |
|---|---|---|---|---|---|---|---|---|
|
6
|
-
|
2.2
|
-
|
1.90
|
3,120
|
5,710
|
0.195
|
|
|
6.35
|
1/4
|
2.39
|
3/32
|
1.98
|
0.0781
|
3,045
|
5,580
|
0.217
|
|
6.35
|
1/4
|
2.29
|
0.0902
|
2.03
|
0.0799
|
3,180
|
-
|
0.220
|
|
6.35
|
1/4
|
1.59
|
1/16
|
2.38
|
0.0938
|
4,300
|
7,890
|
0.237
|
|
9.52
|
3/8
|
3.20
|
1/8
|
3.16
|
0.1245
|
3,380
|
6,190
|
0.503
|
|
9.52
|
3/8
|
1.60
|
1/16
|
3.96
|
0.1560
|
5,530
|
10,140
|
0.551
|
|
14.00
|
-
|
8.00
|
-
|
3.00
|
-
|
2,330
|
-
|
0.826
|
|
14.00
|
-
|
5.00
|
-
|
4.50
|
-
|
3,200
|
-
|
1.070
|
|
14.30
|
9/16
|
8.00
|
5/16
|
3.15
|
0.1240
|
2,380
|
4,360
|
0.879
|
|
14.30
|
9/16
|
4.76
|
3/16
|
4.77
|
0.1878
|
3,390
|
6,210
|
1.138
|
|
19.05
|
3/4
|
1.80
|
-
|
8.63
|
-
|
-
|
12,00
|
2.251
|
|
30.00
|
-
|
10
|
-
|
10
|
-
|
-
|
6,250
|
5.008
|
1) Calculation basis:
K: Factor = OD/ID
K < 2: Calculation according to AD-regulation B10
K > 2: Calculation basis full plastic condition. Safety factor 0.45.
Tolerances
OD and ID: +/- 0.1 mm
WT: +/- 10%
Other tolerances can be offered on request.
Surfaces
As a standard, the internal surface is free from laps, flaws and fissures deeper than 0.1 mm, max. 5 defects > 0.05 mm per cross-section. On prior consultation, depth of defects of max. 0.02 mm according to DIN ISO 8535-1 can be reached.
Testing
Testing of high-pressure tubes includes:
- Examination of dimensions
- Technological tests
- Tensile testing
- Metallographic examination
- Intergranular corrosion test
- Eddy Current test
Tests made on request are, for example:
- Hydrostatic test
- Fatigue strength up to 4,000 bar
- Maximum internal pressure up to 15,000 bar
- Bursting pressure trials
The tests carried out are certified according to DIN EN 10204 3.1. Reception tests according to DIN EN 10204 3.2 by neutral experts can be made on request.
Examinations to determine the cycle fatigue behavior under defined operating conditions can be carried out on request. We offer individual advice.
Our testing laboratory for high-pressure tubes is accredited according to ISO 17025.
Inspection
The scope of inspection depends on the customer specification.