Active Member
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[China]
Address: No.5, Taiwan Road, Zhangjiagang Bonded Area, Zhangjiagang City, Jiangsu Province, China
Contact name:John Chen
Zhangjiagang Bonded Area Henglong Steel Tube Co., Ltd. |
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Bright Annealed Heavy Wall Cold Drawn Precision Steel Tube, EN10305-1 E215, E235, E355 Precision Steel Tubing for Hydraulic System
Brief Introduction:
Standard: EN10305-1, EN10305-4, BS 6323
Grade: E215 / E235 / E355
Out Dimensions: 5 mm ~ 70 mm
Wall Thickness: 0.8 mm ~10mm
Length: Cut-to-length (6m,9m,12,24m) or normal length(5-12m)
Precision steel tube
Precision in size, Bright surface, High performance
Standard: EN10305-1, EN10305-4, BS 6323, ISO 8535
STEEL GRADE: E215 / E235 / E355
Application:
Automobile, engineering vehicles, diesel, chemical engineering machinery, refrigerating equipment for electric appliance and electric heating system.
Tests we apply to the tubes:
1) Chemical Composition Analysis
2) Mechanical Properties (Tensile strength, Yield strength,, Elongation, Hardness)
3) Technological Test (Flattening test, Flaring Test, Bending Test, Hydraulic pressure test)
4) Surface quality detection
5) Eddy-current examination
6) Visual test
Mill test certificates will be issued according to EN10204/3.1B
Chemical Composition:
| Chemical composition(cast analysis): | |||||||
| Steel grade | % by mass | ||||||
| Steel name | Steel number | C | Si | Mn | P | Sb | AI |
| max. | max. | max. | max. | max. | min. | ||
| E215 | 1.0212 | 0.10 | 0.05 | 0.70 | 0.025 | 0.025 | 0.025 |
| E235 | 1.0308 | 0.17 | 0.35 | 1.20 | 0.025 | 0.025 | - |
| E355C | 1.0580 | 0.22 | 0.55 | 1.60 | 0.025 | 0.025 | - |
Mechanical properties at room temperature:
| Mechanical properties at room temperature | |||||||||||||
| Steel grade | Minimum values for the delivery conditiona,b | ||||||||||||
| Steel name | Steel number | ﹢CC | ﹢LCC | ﹢SR | ﹢Ad | ﹢N | |||||||
| Rm | A | Rm | A | Rm | ReH | A | Rm | A | Rm | ReH | A | ||
| MPa | % | MPa | % | MPa | MPa | % | MPa | % | MPa | MPa | % | ||
| E215 | 1.0212 | 430 | 8 | 380 | 12 | 380 | 280 | 16 | 280 | 30 | 290 to 430 | 215 | 30 |
| E235 | 1.0308 | 480 | 6 | 420 | 10 | 420 | 350 | 16 | 315 | 25 | 340 to 480 | 235 | 25 |
| E355 | 1.0580 | 640 | 4 | 580 | 7 | 580 | 450f | 10 | 450 | 22 | 490 to 630 | 355 | 22 |
Delivery conditions:
| Designation | Symbol | Description |
| Cold finished (hard) | BK | Tubes do not undergo heat treatment following the final cold forming and, thus, have a rather high resistance to deformation. |
| Cold finished (soft) | BKW | The final heat treatment is followed by cold drawing involving limited deformation. Appropriate further processing allows a certain degree of cold forming (e.g. bending, expanding). |
| Cold finished and stress-relieved | BKS | Heat treatment is applied following the last cold forming process. Subject to appropriate processing conditions, the increase in the residual stresses involved enables both forming and machining to a certain degree. |
| Annealed | GBK | The last cold forming process is followed by annealing in a controlled atmosphere. |
| Normalized | NBK | The last cold forming process is followed by annealing above the upper transformation point in a controlled atmosphere. |
Competitive Advantage:
Yaxin Precision Tube Co., Ltd.
Leading precision steel tube supplier in the global market, yield 70,000 tons per year based on both seamless tubing and welded tubing. 100% of tubing is used on automotive industry and hydraulic system.
