CK45 C20 Q355B E355(ST52) SAE1026 Honed Hydraulic Tube Skived and Roller Burnished Tube (SRB Tubes) for Hydraulic Equipment
Material and Specification
Honed hydraulic tubes, particularly those that are skived and roller burnished (SRB), are essential components in hydraulic equipment. These tubes, such as the CK45, C20, Q355B, E355(ST52), and SAE1026, are known for their impeccable surface finishes and tightly controlled dimensional tolerances. They are ideal for applications that require high pressure and minimal friction. These tubes are manufactured to meet rigorous specifications, ensuring their reliability and durability in demanding environments.
Key Features
- Precision Manufacturing: SRB tubes are processed through skiving and roller burnishing, which provides a mirror-like surface finish and enhances the fatigue resistance of the tubes.
- Tightly Controlled Tolerances: The manufacture of these tubes involves precise dimension control to ensure consistent performance.
- High Corrosion Resistance: Depending on the material, these tubes can offer excellent resistance to corrosion, prolonging their service life.
- Excellent Mechanical Properties: They demonstrate superb tensile strength and toughness, making them suitable for high-pressure environments.
Chemical Composition
Here's a tabular representation of the chemical compositions for these steel grades:
| Grade |
C (%) |
Mn (%) |
Si (%) |
P (%) |
S (%) |
Cr (%) |
Mo (%) |
Ni (%) |
| CK45 |
0.42-0.50 |
0.50-0.80 |
0.10-0.40 |
≤0.040 |
≤0.040 |
- |
- |
- |
| C20 |
0.17-0.23 |
0.30-0.60 |
≤0.40 |
≤0.045 |
≤0.045 |
- |
- |
- |
| Q355B |
≤0.20 |
1.0-1.7 |
≤0.55 |
≤0.030 |
≤0.030 |
≤0.30 |
≤0.10 |
≤0.70 |
| E355(ST52) |
≤0.22 |
1.30-1.60 |
≤0.55 |
≤0.025 |
≤0.025 |
- |
- |
- |
| SAE1026 |
0.22-0.28 |
0.60-0.90 |
0.15-0.35 |
≤0.040 |
≤0.050 |
- |
- |
- |
Mechanical Properties
The mechanical properties of these materials are critical for their performance in hydraulic systems. Below is a summary:
| Grade |
Yield Strength (MPa) |
Tensile Strength (MPa) |
Elongation (%) |
Hardness (HB) |
| CK45 |
≥310 |
570-700 |
≥16 |
156-207 |
| C20 |
290 |
440-580 |
≥23 |
- |
| Q355B |
≥345 |
470-630 |
≥21 |
- |
| E355(ST52) |
≥355 |
490-630 |
≥20 |
160-210 |
| SAE1026 |
≥275 |
440-670 |
≥25 |
163-220 |
Similar Standards and Steel Grades
To assist in global applications, here is a comparison of these materials to various international standards.
| Standard System |
CK45 |
C20 |
Q355B |
E355(ST52) |
SAE1026 |
| ASTM |
AISI 1045 |
AISI 1020 |
A572 Grade 50 |
A513 Type 5 |
A519 1026 |
| EN |
C45 |
C22 |
S355J2 |
E355 |
- |
| GOST |
45 |
20 |
- |
20 |
- |
| JIS |
S45C |
S20C |
SM490 |
- |
- |
| GB |
45# |
20# |
Q355B |
- |
- |
Application
Honed SRB tubes find extensive use in hydraulic equipment, including:
- Hydraulic Cylinders: They are the core components, ensuring smooth motion and reduced wear and tear.
- Industrial Machinery: Used in both stationary and mobile machinery, offering reliability and efficiency.
- Automotive Systems: As part of the hydraulic systems in various vehicles, ensuring safety and performance.
- Aerospace: Critical for actuators and landing gear systems where minimal friction and high precision are essential.
TORICH Group, an one-stop service provider of raw materials engaged in raw material production, R&D and
trade, has 30+ years of experience in the market, exported to 56 +countries, and won good reputation and
credibility among domestic and foreign customers.
The company's production plant covers an area of over 10,000 square meters, with an annual production
capacity of 50,000 tons of materials and a comprehensive trading and warehousing capacity of 100,000 tons, which can satisfy customers' personalized needs for raw materials in terms of diversity and timeliness.
The group holds shares in more than ten domestic production entities, whose main products include
seamless steel pipes ( carbon steel and stainless steel), welded pipes ( carbon steel and stainless steel), pipe fittings ( carbon steel and stainless steel), titanium (titanium tubes, titanium rods, titanium cakes, titanium plates, etc.), aluminum (aluminum tubes, aluminum rods, aluminum die casting, aluminum casting, CNC machining), and CNC deep processing of metal materials such as tubes, rods, and casting parts.
Over the past 30 years, the company has been gradually developing new technologies and materials to meet
the growing needs of customers and various diversified needs, exporting to more than 56 countries and still
increasing the number of exporting countries, aiming to help customers to solve the demand for raw materials, and to facilitate one-stop purchasing for customers.
Q: Are you trading company or manufacturer ?
A: manufacturer,also can do trading.
Q: How long is your delivery time?
A: Generally speaking,it is 10-15 days if the goods are in stock,or it is 30-40 days if the goods are not in stock, it is according to quantity.
Q: Do you provide samples? is it free or extra ?
A: Yes, we could offer the sample for free charge but need pay the cost of freight.
Q: What is your terms of payment ?
A: Payment<=2000USD, 100% in advance. Payment>=2000USD, 30% T/T in advance ,balance before shippment.
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