DOM Welded Carbon Steel Pipe EN10305-2 for Hydraulic Steel Tubing E155, E195, E235 E275, E355
Product Details
SSID DOM Tube
,E355 DOM Tube
,E235 Drawn Over Mandrel Tube
EN 10305-2 E235 E355 SSID Precision DOM Automotive Tubes
DOM Welded Carbon Steel Pipe EN10305-2 for Hydraulic Steel Tubing E155, E195, E235 E275, E355
Size range: O.D.:6-420mm W.T.:1-50mm L:max12000mm
Applications: for Auto Industry/ Machinery Use/ Oil Cylinder Tube/ Motorcycle Shock Absorber/
Auto Shock Absorber/ Inner Cylinder/ Telescopic Cylinders/ Jack Lifting System/ Hydraulic Cylinders
Appearance of DOM Automotive Tubes:
The internal and external surface finish of the tubes is smooth, while the Weld Seam is somehow not visible or tangible.
The ID surface with roughness Ra≤4μm, the best ID smoothness we could reach Ra≤0.8μm
The inner surface can be measured and reported if this is requested by the purchaser before PO.
Supplying Steel Grade of DOM Automotive Tubes:
E155, E195, E235 E275, E355
What is dom seamless tubing, dom metal tubing?
Round steel tubing begins with coils of steel,which are slit to the proper width for the desired tube size.
The strip is cold formed and passed through an electric resistance welder which joins the edges together,
under pressure, to complete the tubular shape. After testing the weld’s integrity, the tubing is cut to length for
further processing. The cold-drawing process creates a uniform, precision product with substantially improved
tolerances, surface finish and tensile strength, increased hardness and good machinability.
Why choose DOM welded seamless precision steel tubes?
1. It will save your machining costs of producing mechanical parts.
2.High yield strength and tensile strength
3.Uniform wall thickness
4.Good concentricity.
5.Good smooth and clean OD and ID surface
6.High precision tolerance on OD and ID
Delivery Condition:
+C, +Lc, + SR, +A, +N
Steel Grade and Chemical Compositions:
| Steel Grade | C | Si | Mn | P | S | |
| Steel Name | Steel Number | max | max | max | max | max |
| E155 | 1.0033 | 0.11 | 0.35 | 0.70 | 0.025 | 0.025 |
| E195 | 1.0034 | 0.15 | 0.35 | 0.70 | 0.025 | 0.025 |
| E235 | 1.0308 | 0.17 | 0.35 | 1.20 | 0.025 | 0.025 |
| E275 | 1.0225 | 0.21 | 0.35 | 1.40 | 0.025 | 0.025 |
| E355 | 1.0580 | 0.22 | 0.35 | 1.60 | 0.025 | 0.025 |
Note: Special steel grade is also available, according to customer request.
| Mechanical properties | |||||||||||||
| Steel Grade | Minimum values for the delivery condition | ||||||||||||
| Steel Name | (+Cc) | (+LCc) | (+SR) | (+Ad) | (+N) | ||||||||
| Rm Mpa | A % | Rm Mpa | A % | Rm Mpa | ReH Mpa | A % | Rm Mpa | A % | Rm Mpa | ReHe Mpa | A % | ||
| E155 | 1.0033 | 400 | 6 | 350 | 10 | 350 | 245 | 18 | 260 | 28 | 270-410 | 155 | 28 |
| E195 | 1.0034 | 420 | 6 | 370 | 10 | 370 | 260 | 18 | 290 | 28 | 300-440 | 195 | 28 |
| E235 | 1.0308 | 490 | 6 | 440 | 10 | 440 | 325 | 14 | 315 | 25 | 340-480 | 235 | 25 |
| E275 | 1.0225 | 560 | 5 | 510 | 8 | 510 | 375 | 12 | 390 | 21 | 410-550 | 275 | 21 |
| E355 | 1.0580 | 640 | 4 | 590 | 6 | 590 | 435 | 10 | 450 | 22 | 490-630 | 355 | 22 |
Relate Information:
Quality Inspection standard and Normative references:
EN10002-1, Metallic materials- Tensile testing- Part 1: Method of test at ambient temperature
EN10020, Definition and classification of grades of steel
EN10021, General technical delivery requirements for steel and iron products.
EN10027-1, Designation systems for steel - Part 1: Steel names, principal symbols.
EN10027-2, Designation systems for stee l- Part 2: Numerical system
EN10052, Vocabulary of heat treatment terms for ferrous products
EN10204, Metallic Products - Types of inspection documents
EN10233, Metallic materials - Tube - Flattening test
EN10234, Metallic materials - Tube - Drift expanding test
EN10246-1, Non-Destructive testing of steel tubes - Part 1: Automatic electromagnetic testing of seamless and welded(except submerged arc-welded) ferromagnetic steel tubes for verification of hydraulic leak-tightness
EN10246-3, Non-Destructive testing of steel tubes - Part 3: Automatic eddy current testing of seamless and welded ( except submerged arc-welded) steel tubes for the detection of imperfections
EN10246-5, Non-Destructive testing of steel tubes - Part 5: Automatic full peripheral magnetic transducer /flux leakage testing of seamless and welded (except submerged arc-welded) ferromagnetic steel tubes for the detection of longtitudinal imperfections
EN10246-7, Non-Destructive testing of steel tubes - Part 7: Automatic full peripheral ultrasonic testing of seamless and welded (except submerged arc-welded) steel tubes for the detection of longitudinal imperfections.
EN10256, Non-Destructive testing of steel tubes - Qualification and competence of level 1 and 2 non-destructive testing personnel
EN ISO377, Steel and steel products - Location and preparation of samples and test pieces for mechanical testing ( ISO 377:1997)
EN ISO 2566-1, Steel - Conversion of elongation values - Part 1: Carbon and low alloy steels ( ISO2566-1:1984)
ENV10220, Seamless and welded steel tubes - Dimension and masses per unit length.
EN10266, Steel Tubes, fittings and structural hollow sections - Definition and Symbols for use in products standards
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