Jiangsu Hongbao Group Co., Ltd.
Jiangsu Hongbao Group Co., Ltd. Manufacture since 1958
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E235 Steel Tube EN10305 High Precision Steel Tube Seamless Carbon Steel Pipe
Description:
E235 steel tubes, conforming to EN10305 standards, are manufactured under precise controls to ensure high precision and consistent quality. These seamless carbon steel pipes undergo cold drawing and multiple annealing processes to achieve exact dimensions and smooth surfaces. Manufacturers rigorously test them to meet stringent DIN2391 and EN10305 specifications, ensuring their reliability for critical applications in hydraulic and pneumatic systems.
Chemical composition:
| Steel Grade | C | Si | Mn | p | s | Cr | Ni | AI |
| 20# | 0.17-0.24 | 0.17-0.37 | 0.35-0.65 | 0.035 | 0.035 | 0.250 | 0.250 | / |
| 45# | 0.42-0.50 | 0.17-0.37 | 0.50-0.80 | 0.035 | 0.035 | 0.250 | 0.300 | / |
| Q345B | ≤0.2 | ≤0.5 | 1.00-1.60 | 0.030 | 0.030 | 0.300 | 0.250 | / |
| Q345D | ≤0.2 | ≤0.5 | 1.00-1.60 | 0.030 | 0.030 | 0.250 | 0.250 | 0.015 |
| 25Mn | 0.22-0.29 | 0.17-0.37 | 0.70-1.00 | 0.035 | 0.035 | / | / | / |
| 27SiMn | 0.24-0.32 | 0.10-.014 | 1.10-1.40 | 0.035 | 0.035 | 0.300 | 0.300 | / |
| E355/St52 | ≤0.22 | ≤0.55 | ≤1.6 | 0.025 | 0.025 | 0.250 | 0.250 | / |
| SAE1026 | 0.22-0.28 | 0.15-0.35 | 0.60-0.90 | 0.050 | 0.050 | / | / | / |
Mechanical Property:
| Steel Grade | Rm Mpa | Reh Mpa | Elongation Mpa | Rm Mpa | Elongation |
| 20# | ≥520 | ≥375 | ≥15 | ≥550 | ≥8 |
| 45# | ≥600 | ≥520 | ≥10 | ≥640 | ≥5 |
| 16Mn Q345B Q345D | ≥600 | ≥520 | ≥14 | ≥640 | ≥5 |
| 25Mn | ≥600 | ≥510 | ≥15 | ≥640 | ≥5 |
| 27SiMn | ≥760 | ≥610 | ≥10 | ≥800 | ≥5 |
| St45 | ≥520 | ≥375 | ≥15 | ≥550 | ≥5 |
| E355(st52) | ≥600 | ≥520 | ≥14 | ≥640 | ≥5 |
| SAE1026 | ≥600 | ≥510 | ≥15 | ≥640 | ≥5 |
| Process | Diameter | Length | Precision | Inner Hole Roughness |
| Cold Rolled | 30-100mm | ≤12 m | H8-H10 | 0.4-1.6 |
| Cold Draw | 30-250mm | ≤12 m | H8-H10 | 0.8-1.6 |
| Honing | 40-500mm | ≤12 m | H8-H9 | 0.4-0.8 |
| Rolling | 40-400mm | ≤7 m | H8 | 0.4 |
| Inner Diameter | H8 | H9 | H10 |
1. OD:10mm-219mm
2. WT:1.2mm-45mm
3. Good supplier,perfect steel brand
4. High quality,high precision, favorable price, good after-sale service
Advantage:
1. Our company produce various specifications,models as per standards
2. Using high -quality material and advanced production technology and equipment for processing
3. Applicable to a humid climate and the harsh corrosive enviroment
4. Products has been exported to Europe,North American,the Middle East,South East Asia,Africa,Asia,European,other countries and regions
5. We are Trade-assurance company,Place orders online,get full protection
