Carbon Steel
GB/T3639
10/20/16Mn/35/45/30CrMo/42CrMo/etc
| Availability: | |
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| Quantity: | |
Details Images


Products Specifications
| Steel Grade | Chemical composition % | |||||
| C | Si | Mn | P | S | Al | |
| ≤ | ≥ | |||||
| 10#/1010 | 0.07-0.13 | 0.17-0.37 | 0.35-0.65 | 0.035 | 0.035 | / |
| 20#/1020 | 0.17-0.24 | 0.17-0.37 | 0.35-0.65 | 0.035 | 0.035 | / |
| ST35/E235 | ≦ 0.17 | 0.35 | ≧0.04 | 0.025 | 0.025 | / |
| ST45 | ≦ 0.21 | ≦ 0.35 | ≧0.04 | 0.025 | 0.025 | / |
| 45#/ 1045/S45C | 0.42-0.50 | 0.17-0.37 | 0.50-0.80 | 0.035 | 0.035 | / |
| Q345B | ≤0.2 | ≤0.5 | 1.00-1.60 | 0.03 | 0.03 | / |
| SKTM13C | ≤0.25 | ≤0.35 | 0.3-0.9 | 0.04 | 0.04 | / |
| ST52/E355 | ≤0.22 | ≤0.55 | ≤1.6 | 0.025 | 0.025 | / |
| Hydraulic Cylinder Honing Tube | |||||
| Inside Dia (mm) | ID Tolerance (mm) | WT Tolerance (mm) | |||
| H7 | H8 | H9 | H10 | ||
| ≤30 | +0.021/0 | +0.033/0 | +0.052/0 | +0.084/0 | ±7.5% >210mm ±10% |
| 30 - ≤50 | +0.025/0 | +0.039/0 | +0.062/0 | +0.100/0 | |
| 50 - ≤80 | +0.030/0 | +0.046/0 | +0.074/0 | +0.120/0 | |
| 80 - ≤120 | +0.035/0 | +0.054/0 | +0.087/0 | +0.140/0 | |
| 120 - ≤180 | +0.040/0 | +0.063/0 | +0.100/0 | +0.160/0 | |
| 180 - ≤250 | +0.046/0 | +0.072/0 | +0.115/0 | +0.185/0 | |
Overview
A hydraulic cylinder pipe, also known as a hydraulic cylinder tube or barrel, is a core component in hydraulic systems. It acts as the main body of the hydraulic cylinder, playing a vital role in transforming hydraulic pressure into mechanical force or motion. Below is a structured overview of its key features and applications:
1. Material & Construction
Material Composition: Typically made from high-quality steel, including carbon steel, stainless steel, or alloy steel, selected based on system requirements.
Seamless Design: Manufactured without welded seams to ensure uniform strength and reliability under high pressure.
2. Precision & Performance
Dimensional Accuracy: Produced with tight tolerances to ensure a perfect fit within the cylinder assembly, preventing leaks and ensuring efficient operation.
High Pressure Resistance: Engineered to withstand extreme hydraulic pressures without deformation or failure.
Corrosion Resistance: Often treated with anti-corrosion coatings or made from corrosion-resistant materials for use in harsh environments.
3. Surface & Processing
Inner Surface Finishing: Many tubes undergo honing, skiving, or roller burnishing to achieve a smooth interior surface, reducing friction and enhancing fluid efficiency.
End Connections: Designed with standardized ends for secure, leak-free connections to pistons, rods, and hydraulic fittings.
4. Customization & Quality
Custom Sizing: Available in various diameters and lengths to meet specific application needs.
Rigorous Quality Control: Each tube is subject to strict inspections to ensure compliance with dimensional, mechanical, and surface quality standards.
Key Applications
Hydraulic cylinder pipes are widely used across industries including:
Automotive Systems: Employed in power steering, brakes, suspensions, and lifting mechanisms. Tubes such as the OD 50-60mm GB/T3639 carbon steel type provide reliability and safety under demanding conditions.
Construction Machinery: Essential in excavators, cranes, and bulldozers for high-strength, high-pressure, and wear-resistant performance.
Agricultural Equipment: Used in tractors, harvesters, and seeders to deliver efficient and durable power transmission.
Aerospace & Defense: Selected for critical applications due to their high pressure resistance, stability, and reliability in extreme environments.
Summary
The hydraulic cylinder pipe is a foundational element in hydraulic systems, valued for its precision, strength, and adaptability. Its seamless construction, pressure resilience, corrosion resistance, and customizable dimensions make it suitable for diverse industrial applications—ensuring efficient and reliable operation across automotive, construction, agricultural, aerospace, and military sectors.
Details Images


Products Specifications
| Steel Grade | Chemical composition % | |||||
| C | Si | Mn | P | S | Al | |
| ≤ | ≥ | |||||
| 10#/1010 | 0.07-0.13 | 0.17-0.37 | 0.35-0.65 | 0.035 | 0.035 | / |
| 20#/1020 | 0.17-0.24 | 0.17-0.37 | 0.35-0.65 | 0.035 | 0.035 | / |
| ST35/E235 | ≦ 0.17 | 0.35 | ≧0.04 | 0.025 | 0.025 | / |
| ST45 | ≦ 0.21 | ≦ 0.35 | ≧0.04 | 0.025 | 0.025 | / |
| 45#/ 1045/S45C | 0.42-0.50 | 0.17-0.37 | 0.50-0.80 | 0.035 | 0.035 | / |
| Q345B | ≤0.2 | ≤0.5 | 1.00-1.60 | 0.03 | 0.03 | / |
| SKTM13C | ≤0.25 | ≤0.35 | 0.3-0.9 | 0.04 | 0.04 | / |
| ST52/E355 | ≤0.22 | ≤0.55 | ≤1.6 | 0.025 | 0.025 | / |
| Hydraulic Cylinder Honing Tube | |||||
| Inside Dia (mm) | ID Tolerance (mm) | WT Tolerance (mm) | |||
| H7 | H8 | H9 | H10 | ||
| ≤30 | +0.021/0 | +0.033/0 | +0.052/0 | +0.084/0 | ±7.5% >210mm ±10% |
| 30 - ≤50 | +0.025/0 | +0.039/0 | +0.062/0 | +0.100/0 | |
| 50 - ≤80 | +0.030/0 | +0.046/0 | +0.074/0 | +0.120/0 | |
| 80 - ≤120 | +0.035/0 | +0.054/0 | +0.087/0 | +0.140/0 | |
| 120 - ≤180 | +0.040/0 | +0.063/0 | +0.100/0 | +0.160/0 | |
| 180 - ≤250 | +0.046/0 | +0.072/0 | +0.115/0 | +0.185/0 | |
Overview
A hydraulic cylinder pipe, also known as a hydraulic cylinder tube or barrel, is a core component in hydraulic systems. It acts as the main body of the hydraulic cylinder, playing a vital role in transforming hydraulic pressure into mechanical force or motion. Below is a structured overview of its key features and applications:
1. Material & Construction
Material Composition: Typically made from high-quality steel, including carbon steel, stainless steel, or alloy steel, selected based on system requirements.
Seamless Design: Manufactured without welded seams to ensure uniform strength and reliability under high pressure.
2. Precision & Performance
Dimensional Accuracy: Produced with tight tolerances to ensure a perfect fit within the cylinder assembly, preventing leaks and ensuring efficient operation.
High Pressure Resistance: Engineered to withstand extreme hydraulic pressures without deformation or failure.
Corrosion Resistance: Often treated with anti-corrosion coatings or made from corrosion-resistant materials for use in harsh environments.
3. Surface & Processing
Inner Surface Finishing: Many tubes undergo honing, skiving, or roller burnishing to achieve a smooth interior surface, reducing friction and enhancing fluid efficiency.
End Connections: Designed with standardized ends for secure, leak-free connections to pistons, rods, and hydraulic fittings.
4. Customization & Quality
Custom Sizing: Available in various diameters and lengths to meet specific application needs.
Rigorous Quality Control: Each tube is subject to strict inspections to ensure compliance with dimensional, mechanical, and surface quality standards.
Key Applications
Hydraulic cylinder pipes are widely used across industries including:
Automotive Systems: Employed in power steering, brakes, suspensions, and lifting mechanisms. Tubes such as the OD 50-60mm GB/T3639 carbon steel type provide reliability and safety under demanding conditions.
Construction Machinery: Essential in excavators, cranes, and bulldozers for high-strength, high-pressure, and wear-resistant performance.
Agricultural Equipment: Used in tractors, harvesters, and seeders to deliver efficient and durable power transmission.
Aerospace & Defense: Selected for critical applications due to their high pressure resistance, stability, and reliability in extreme environments.
Summary
The hydraulic cylinder pipe is a foundational element in hydraulic systems, valued for its precision, strength, and adaptability. Its seamless construction, pressure resilience, corrosion resistance, and customizable dimensions make it suitable for diverse industrial applications—ensuring efficient and reliable operation across automotive, construction, agricultural, aerospace, and military sectors.