GB 28884 Seamless Steel Tube: Cold-Drawn Large Diameter Seamless Steel Tubes for Large Volume Gas Cylinder
Material, Specification, Key Features
The GB 28884 seamless steel tube is specifically designed for the production of large volume gas cylinders. These tubes are manufactured using a cold-drawn process and have a large diameter, ensuring high structural integrity for demanding applications.
Key features of the GB 28884 seamless steel tubes include:
- High Strength: The steel tubes are made from high-quality materials that provide excellent strength, enabling them to withstand high-pressure conditions within gas cylinders.
- Enhanced ety: The seamless design minimizes the risk of gas leakage, ensuring the ety of both the cylinder and users.
- Precise Dimensions: The cold-drawn process ensures tight tolerances and precise dimensions, allowing for easier manufacturing and assembly of gas cylinders.
Chemical Composition
The following table presents the chemical composition of GB 28884 seamless steel tubes:
| Element | Content (%) |
| Carbon (C) | 0.25-0.32 |
| Silicon (Si) | 0.20-0.40 |
| Manganese (Mn) | 0.70-0.90 |
| Phosphorus (P) | ≤0.030 |
| Sulfur (S) | ≤0.025 |
| Chromium (Cr) | ≤0.30 |
| Nickel (Ni) | ≤0.30 |
| Copper (Cu) | ≤0.25 |
Mechanical Properties
The mechanical properties of GB 28884 seamless steel tubes are as follows:
| Property | Value |
| Tensile Strength | 720-880 MPa |
| Yield Strength | ≥620 MPa |
| Elongation | ≥12% |
| Impact Toughness | ≥35J/cm² |
| Hardness (HB) | ≤229 HB (<=800mm); ≤197 HB (>800mm) |
| Wall Thickness | ≤80mm |
| Wall Thickness | ≤65mm |
Steel Grade
The GB 28884 seamless steel tubes are available in different steel grades, including but not limited to:
- 34Mn2V: This steel grade exhibits excellent tensile strength and impact toughness, making it well-suited for gas cylinders used in extreme conditions.
- 30CrMo: With improved hardenability and high strength, this steel grade offers enhanced resistance against deformation under high pressures.
- 35CrMo: Known for its high temperature and high-pressure resistance, this steel grade is commonly used for gas cylinders in industrial settings.
Application
GB 28884 seamless steel tubes are widely adopted for the manufacturing of large volume gas cylinders. These cylinders find applications in various industries, including:
- Energy Sector: Used in the storage and transportation of compressed natural gas (CNG) and other high-pressure gases.
- Chemical Industry: Utilized for the containment and distribution of specialty gases and industrial chemicals.
- Medical Field: Employed for the storage and transportation of medical gases, ensuring their e and reliable delivery.
- Aerospace: These tubes are suitable for gas cylinders used in aircraft, ensuring the availability and reliable supply of gases during flights.
Possible Alternative Grades
Though GB 28884 seamless steel tubes provide exceptional performance, some alternative grades can be considered based on specific requirements. These may include:
- 4130 Alloy Steel: Exhibiting excellent strength and corrosion resistance properties, this steel grade is often used in aerospace applications.
- 34CrMo4: Known for its high tensile strength and high-temperature resistance, this grade is widely used in the manufacturing of gas cylinders for industrial purposes.
- 37Mn: With good weldability and high impact resistance, this steel grade is popular for gas cylinders in automotive and medical industries.
Haiyan Sanxin Steel Pipe Factory is a leading manufacturer of steel pipes in China. Located in a region with excellent geographical advantages, the factory is situated close to the Zhoushan Port and Ningbo Port.
Our factory covers an area of more than 25,000 square meters and has been in the steel pipe manufacturing business for 20 years. Over this period, we have accumulated a wealth of professional experience, which has helped us establish ourselves as a trusted name in the industry.
At our factory, we specialize in the production of various types of steel pipes, including stainless steel pipe, carbon steel pipe, copper pipe, steel pipe,seamless steel pipe and welded pipe. Our expertise in this field is evident from the 12 patents that we hold, which demonstrate our commitment to innovation and excellence.
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