EN 10305-2 E195 E235 E355 Welded Cold Drawn Precision Steel Tubes
DIN EN 10305-2 Welded cold drawn precision steel tubes characteristics
- high level of dimensional accuracy for the Internal Diameter ID and Outside Diameter OD
- strictly tolerances of wall thickness
- Smooth surfaces
- good concentricity
- improved resistance properties through cold forming
EN 10305-2 and DIN 2393 Grade Comparison
| DIN Norms: DIN 2393 |
EN Norms: EN 10305-2 |
UNI Norms: UNI 7946 |
| RSt 34.2 |
E195 |
Fe320 |
| RSt 37.2 |
E235 |
Fe360 |
| St 52.3 |
E355 |
Fe490 |
EN 10305-2 Welded cold drawn precision steel tubes Delivery Condition
| Designation |
Symbol |
Description |
| Cold drawn / hard |
+C |
Without thermal processing, after the process of cold drawing is finished |
| Cold drawn / soft |
+LC |
After final thermal processing, appropriate drawing |
| Cold drawn and annealed |
+SR |
After the final cold drawing process and annealing thermal processing in a controlled atmosphere |
| Annealed |
+A |
After the final cold drawing process, the pipes are annealed in a controlled atmosphere |
| Normalized |
+N |
After the final cold drawing process, the pipes are normalized in a controlled atmosphere |
EN 10305-2 Welded cold drawn precision steel tubes Mechanical properties in room temperature
| Steel grade |
Maximum values depending on the delivery condition |
| +C |
+LC |
+SR |
+A |
+N |
| Steel symbol |
RmMPa |
A % |
RmMPa |
A % |
RmMPa |
ReHMpa |
A % |
RmMPa |
A % |
Rm MPa |
ReHMpa |
A % |
| E155 |
400 |
6 |
350 |
10 |
350 |
245 |
18 |
260 |
28 |
270 do 410 |
155 |
28 |
| E195 |
420 |
6 |
370 |
10 |
370 |
260 |
18 |
290 |
28 |
300 do 440 |
195 |
28 |
| E235 |
490 |
6 |
440 |
10 |
440 |
325 |
14 |
315 |
25 |
340 do 480 |
235 |
25 |
| E275 |
560 |
5 |
510 |
8 |
510 |
375 |
12 |
390 |
21 |
510 do 550 |
275 |
21 |
| E355 |
640 |
4 |
590 |
6 |
590 |
435 |
10 |
450 |
22 |
490 do 630 |
355 |
22 |
EN 10305-2 Welded cold drawn precision steel tubes Chemical Composition
| Material Grade |
% Weight |
| Steel symbol |
C max |
Si max |
Mn max |
P max |
S max |
| E155 |
0,11 |
0,35 |
0,70 |
0,025 |
0,025 |
| E195 |
0,15 |
0,35 |
0,70 |
0,025 |
0,025 |
| E235 |
0,17 |
0,35 |
1,20 |
0,025 |
0,025 |
| E275 |
0,21 |
0,35 |
1,40 |
0,025 |
0,025 |
| E355 |
0,22 |
0,35 |
1,60 |
0,025 |
0,025 |
EN 10305-2 Welded cold drawn precision steel tubes Inspection and Testing list
| Inspection or test type |
Test frequency |
| Internal tests |
Acceptance test |
| Mandatory |
Chemical analysis |
M |
M |
| Tensile testing |
M |
One per tested batch |
| Dimension verification |
M |
M |
| Visual inspection |
M |
M |
| Optional |
Flattening test or expansion test (option 18) |
M |
One per tested batch |
| Roughness testing |
Not applicable |
One per tested batch |
| NDT of the weld in order to identify any longitudinal discontinuities |
Not applicable |
Individual |
| NDT in order to detect any leaks |
EN 10305-2 Surface condition:
A roughness value of Ra < 0,8 μm applies to the inside surface, in compliance with ISO 4287 and ISO 4288. For the outside surface, EN 10305-2 is applicable
EN 10305-2 Straightness:
Tubes for hydraulic and pneumatic applications are specially straightened with regard to the intended application. For tubes with an outside diameter D > 15 mm supplied in lengths greater than 1 000 mm, the deviation from straightness of any tube length L shall not exceed:
a) 0,001 5 L for ReH ≤ 500 MPa ;
b) 0,002 L for ReH > 500 MPa
Standard
No |
Steel Grade |
Standard Name |
Dimension
Range |
| EN 10208 |
L210GA,L235GA,L245GA,L290GA,
L360GA,L245NB, L290NB,L360NB,
L415NB, L360QB, LI15QB,L450QB,
L485QB,L555QB |
Steel Pipes for Pipelines for
Combustible Fluids |
33.7-1626mm |
| EN 10210 |
S235JRH,S275JOH,S275J2H,S355JOH,
S355J2H,S355K2H,S275NH,S275NLH,
S355NH,S355NLH,S420NH,S420NLH,
S46INH,S460NLH |
Hot Finished Structural
Hollow Sections of Non-alloy
and Fine Grain Steels |
21.3-1219mm |
| EN 10216-1 |
P195TRI,P195TR2,P235TR1,
P235TR2, P265TR I, P265TR2 |
Seamless Steel Tubes for
Pressure Purposes-1-
Non-alloy Steel Tubes with
Specified Room Temperature
Properties |
10.2-711mm |
| EN 10216-2 |
P195GH, P235GH, P265GH,
20MnNb6,16Mo3, 8MoB5-4,
14MoV6.3, 10CrMo5.5,13CrMo4-5,
10CrMo9-10, 11CrMo9.10,
25CrMo4,20CrMoV13-5-5,
15 NiCuMoNB-6-4,X11CrMo5+1,
X11CrMo5+NTI,X11CrMo5+NT2,
X11CrMo9.1+1, X11CrMo9.1+NT,
X10CrMoVNb9-l, X20CrNiV11-1 |
Seamless Steel Tubes for
Pressure Purposes-2:
Non-alloy and Alloy Steel
Tubes with Specified Elevated
Temperature Properties |
10.2-711mm |
| EN 10216-3 |
P275NL I,P275NL2, P355N,P355NH,
P355NL1,P355NL2,P460N,P460NH,
P460NL1,P460NL2,P620Q,P620QH,P620QL,
P690Q,P690QH,P690OL1,P690QL2 |
Seamless Steel Tubes for
Pressure Purposes-3:
Alloy Fine Grant Steel Tubes |
10.2-711mm |
| EN10216-4 |
P215NL,P255QL,P265NL,
26CrMo4.2,11MnNi5-3,13MnNi6-3,
12Nil4,Xl2Ni5,X10Ni9 |
Seamless Steel Tubes far
Pressure Purposes-4:
Non-alloy aid Alloy Steel
Tubes with Specified Low
Temperature Properties |
10.2-711mm |
| EN 10224 |
L235, L275, L355 |
Non-alloy Steel Tubes and
Fittings for the Conveyance of
Water and Other Aqueous
Liquids |
26.9-2743mm |
| EN 10297-1 |
E235,E275,E315,E355,E470,
E275K2,E355K2,E420J2,E460K2,
E590K2,F730K2 C22E,C35E,C45E,C60E,
38Mn6,41Cr4,25CrMo4,30CrMo4,
34CrMo4,42CrMo4,36CrNiMo4,
30CrNiMo8,4lNiCrMo7-3-2 |
Seamless Circular Steel Tubes
for Mechanical mid General
Engineering Purposes-1:
Non-alloy and Alloy
Steel Tubes |
26.9-610mm |
| EN 10305-1 |
E215,E235,E355 |
Steel Tubes For Precision
Applications-1:
Seamless Cold Drawn Tubes |
4-260mm |
| EN 10305-4 |
E215,E235,E355 |
Steel Tubes for precision
Applications-4:
Seamless Cold Drawn Tubes
for Hydraulic mid Pneumatic
Power Systems |
4-80mm |
HEAT-TREATABLE STEELS
Seamless steel tubes acc. to DIN EN 10083-3 and DIN 17204 |
| |
|
|
| DIN EN 10083-3: |
Heat-treatable steels (Quenched & tempered steels) |
| Steel grades: |
e.g. 25CrMo4, 34CrMo4, 42CrMo4 |
| DIN 2448/17204: |
Seamless circular tubes made from heat-treatable steels |
| (DIN 2448 [replaced]): |
Plain end seamless steel tubes: Dimensions and conventional masses per unit length |
| Steel grades: |
e.g. 25 CrMo 4, 34 CrMo 4, 42 CrMo 4 |
| Fields of application: |
| General mechanical engineering and tool-building, vehicle construction, pressure vessel and pipeline construction |
| |
TUBES FOR STRUCTURAL STEEL CONSTRUCTIONS MADE FROM FINE-GRAIN STEELS
Seamless steel tubes acc. to DIN EN 10210 and DIN 17124 |
| |
|
|
| DIN EN 10210-1: |
Hot-finished structural hollow sections of non-alloy and fine-grain structural steels |
| Steel grades: |
e.g. S275NH, S355NH, S355NLH, S460NH, S460NLH |
| DIN EN 10210-2: |
Hot-finished structural hollow sections of non-alloy and fine-grain structural steels - Tolerances, dimensions and sectional properties |
| DIN 2448/17124 (replaced): |
Seamless circular tubes of fine-grain steels for engineering purposes |
| (DIN 2448 [replaced]): |
Plain end seamless steel tubes: Dimensions and conventional masses per unit length |
| Steel grades: |
e.g. StE 285, StE 355, TStE 355, StE 460, TStE 460 |
| Fields of application: |
| Steel construction ( e.g. structural and civil engineering ), bridge and crane construction |
| |
PIPELINES FOR GAS AND COMBUSTIBLE FLUIDS
Seamless steel tubes acc. to DIN EN 10208-2 and DIN 17172 |
| |
|
|
| DIN EN 10216-2: |
Steel pipes for pipelines for combustible fluids Tubes from requirement class B |
| Steel grades: |
e.g. L290NB, L360NB, L415NB, L415QB |
| DIN 2448/17171 (replaced): |
Steel pipes for pipelines for the transport of combustible fluids and gases |
| (DIN 2448 [replaced]): |
Plain end seamless steel tubes: Dimensions and conventional masses per unit length |
| Steel grades: |
e.g. StE 290.7, StE 360.7, StE 415.7 |
| Fields of application: |
| Long-distance pipelines (e.g. oil and oil products) for compressed and liquid gases |
| |
SEAMLESS TUBES FOR PRESSURE PURPOSES AT ROOM TEMPERATURE
Seamless steel tubes acc. to DIN EN 10216-3 and DIN 17179 |
| |
|
|
| DIN EN 10216-3: |
Seamless steel tubes for pressure purposes of alloy fine- grain steels with specified properties at room temperature |
| Steel grades: |
e.g. P355N, P355NH, P355NL1, P355NL2 |
| DIN 2448/17179 (replaced): |
Seamless circular tubes of fine-grain steels for special requirements |
| (DIN 2448 [replaced]): |
Plain end seamless steel tubes: Dimensions and conventional masses per unit length |
| Steel grades: |
e.g. StE 355, WStE 355, TStE 355, EStE 355 |
| Fields of application: |
| Pressure vessel construction, apparatus engineering, pipelines, mechanical engineering and tool-building. |
| |
SEAMLESS TUBES FOR PRESSURE PURPOSES AT LOW TEMPERATURES
Seamless steel tubes acc. to DIN EN 10216-4 and DIN 17173 |
| |
|
|
| DIN EN 10216-4: |
Seamless steel tubes for pressure purposes of non-alloy and alloy steels with specified low-temperature properties. |
| DIN 2448/17173 (replaced): |
Seamless circular tubes of cold-resistant steels |
| (DIN 2448 [replaced]): |
Plain end seamless steel tubes: Dimensions and conventional masses per unit length |
| Fields of application: |
| Apparatus engineering, vessel construction, pipelines, mechanical engineering and tool-building. |
DIN 2391 Seamless Precision Steel Tubes
DIN 2393 St28 St34.2 St37.2 St44.2 St52.3 Welded Precision Steel Tubes
EN 10305-2 E195 E235 E355 Welded Cold Drawn Precision Steel Tube
EN 10305-1 E215 E235 E355 Seamless Precision Steel Tube Tubing Tubes
Features of Pipe Series of high-precision bright Steel Tube
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