E235 EN10305 WT1.2 High Precision Steel Tube Seamless Carbon Steel Pipe
Product Overview
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 |
Al |
| 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 |
0.10-0.14 |
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 Properties
| 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 |
Manufacturing Process Specifications
| 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 |
Key Specifications
- OD: 10mm-219mm
- WT: 1.2mm-45mm
- Good supplier, perfect steel brand
- High quality, high precision, favorable price, good after-sale service
Product Advantages
- Our company produces various specifications and models according to standards
- Using high-quality materials and advanced production technology and equipment for processing
- Applicable to humid climates and harsh corrosive environments
- Products have been exported to Europe, North America, the Middle East, Southeast Asia, Africa, Asia, and other countries and regions
- We are a Trade-assurance company - place orders online with full protection