High-pressure tubes

Products
High-pressure tubes

Our seamless high-pressure tubes are used for various high-pressure applications, not only for extremely high pressures, but also in corrosive atmospheres. The main applications. The main applications are chemical production processes, hydraulic installations, test benches as well as water-jet cutting facilities. The pressure medium can be a suitable liquid or gas.

In order to meet special requirements that are put on high-pressure tubes we have developed - in
cooperation with companies working in the field of high-pressure technology - specialty tubes which
are characterized by high yield and tensile strength in connection with a high elongation.
The pressure resistance is guaranteed by the very smooth ID-surface.
An autofrettage treatment prolongs the cycle fatigue behaviour. ^*)

QUALITY ASSURANCE

Our quality inspections include, for instance, examination of dimensions, technological tests, tensile testing,
metallographic examination, intergranular corrosion testing as well as eddy current and hydrostatic testing.

The scope of inspection depends on the customers' specification. The Sandvik P&P quality management system
is certified according to DIN EN ISO 9001 by LRQA, the environmental management system is certified according
to DIN EN ISO 14001 and the operational health and safety management according to OHSAS 18001.
Furthermore Sandvik P&P has the TÜV approval to as manufacturer according to AD-W0/TRD 100 and is certified
according to PED 97/23 EC.
The testing laboratory is accredited according to DIN EN ISO 17025.

Grades and mechanical properties

Sandvik	D DIN	USA ASTM	GB BS	F AFNOR	S SS	Yield strength Rp0,2 min. MPa	Tensile strength Rm min. MPa	Elongation A
5R10	1.4301	TP 304	304S31	Z 6 CN 18-09	2333	600	700	min. 18 %
3R35	1.4404	TP 316L	316S31	Z 2 CND 17-12	2348	600	700	min. 18 %
HP160	-	-	-	-		1100	1200	min. 12 %

Standard dimensions

OD		ID		WT		Working pressure (stat.) ¹⁾		Theor. weight
mm	inch	mm	inch	mm	inch	4301/4404	HP 160
						bar	bar	kg/m
6.00		2.20		1.90		3,120	5,710	0.195
6.35	1/4"	2.39	3/32"	1.98	.0781	3,045	5,580	0.217
6.35	1/4"	2.29	.0902	2.03	.0799	3,180	-	0.220
6.35	1/4"	1.59	1/16"	2.38	.0938	4,300	7,890	0.237
9.52	3/8"	3.20	1/8"	3.16	.1245	3,380	6,190	0.503
9.52	3/8"	1.60	1/16"	3.96	.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	.1240	2,380	4,360	0.879
14.30	9/16"	4.76	3/16"	4.77	.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
Additional dimensions on request.

1) Calculation basis:
K: Factor = OD/ID
K < 2: Calculation acc. to AD-regulation B10
K > 2: Calculation basis full plastic condition. Safety factor 0.45.

Standard tolerances
OD and ID +/- 0.1 mm
Wall +/- 10 %
Other tolerances on request.

Certificates
The tests carried out are set down in an inspection certificate to DIN EN 10204 3.1.
Reception tests to DIN EN 10204 3.2 by neutral experts can also be made on request.

Internal surface
Standard: 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.

Lengths
Standard: random lengths of 4.0 - 7.0 m.
Other lengths on request.
Lengths up to 16.0 m - depending on dimension - can be produced.

Marking and packaging
According to cusomters' specification.

Special tests on request

Fatigue strength up to 4,000 bar
Maximum internal pressure up to 15,000 bar
Bursting pressure trials

Examinations in order to determine the cycle fatigue behaviour under defined operating conditions can be
carried out on request. We offer individual advice.

Sandvik HP160
HP1602 is a high-strength nitrogen-alloyed austenitic stainless steel with high corrosion resistance.

Characteristic properties

strengh higher than TP 304 / TP 316
improved corrosion resistance
high degree of purity
minor depths of defects
good forming properties
autofrettage with approx. 12,000 bar

Cheminical composition (nominal), %
C max: 0,08
Mn 3,6
Cr 20,5
Ni 10
Mo 2,5
N 0,4
Nb 0,3

Mechanical properties
For high static and dynamic requirements:
Tensile strength Rm: min. 1200 MPa
Yield strength Rp0,2: min. 1100 MPa
Elongation A: min. 12 %

Physical properties (20°C)
Density: 8 g /cm3
Modulus of elasticity: 200 000 MPa
Specific heat: 450 J / (kg°C)
Thermal conductivity: 15 W / (m°C)

Corrosion resistance
Sandvik HP160 has a high corrosion resistance against corrosion in general as well as
intergranular corrosion due to his high purity. The high molybdenum content causes good
resistance against pitting and crevice corrosion.

Forms of supply

Seamless tubes
Round bar in rolled or forged condition
Square steel in rolled or forged condition
Hexagon bars

If machining is required, please contact Sandvik Coromant.

Sandvik and HP160 are trademarks owned by Sandvk AB.

Recommendations are for guidance only, and the suitability of a material for a specific
application can be confirmed only when we know the actual service conditions. Continuous
development may necessitate changes in technical data without notice.

For more detailed information please refer to our datasheet No. S-1594-GER or S-1594-ENG

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