GB 18248 Large Diameter Cold Drawn Seamless Steel Tubes For High Pressure Gas Cylinder
Product Details
Large Diameter Seamless Steel Tubes
,Gas Cylinder Seamless Tube
,Precision Steel Pipe GB 18248
GB 18248 Large Diameter Cold Drawn Seamless Steel Tubes For High Pressure Gas Cylinder
Material and Specification
The GB 18248 standard pertains to large diameter cold drawn seamless steel tubes designed specifically for high pressure gas cylinders. These tubes are critical components used in a variety of industries, including manufacturing, energy, and transportation.
This standard defines the material requirements, manufacturing processes, and dimensions of the seamless steel tubes. The tubes are carefully engineered to withstand high internal pressures and provide enhanced ety and efficiency in gas cylinder applications.
Key Features
The key features of GB 18248 large diameter cold drawn seamless steel tubes are as follows:
- High Pressure Resistance: These tubes are specifically designed to withstand the immense pressures encountered in gas cylinders, ensuring their structural integrity and ety.
- Seamless Construction: The tubes are manufactured using a seamless process, which eliminates potential weak points and enhances overall strength.
- Cold Drawn Process: The cold drawn manufacturing process ensures excellent dimensional accuracy, smooth surface finish, and improved mechanical properties.
- Diverse Applications: These tubes find applications in various industries, including gas cylinder manufacturing, hydraulic systems, and high-pressure pipelines.
Chemical Composition
The table below presents the chemical composition of GB 18248 large diameter cold drawn seamless steel tubes:
| Element | Chemical Composition (%) |
|---|---|
| C (Carbon) | 0.20 max |
| Si (Silicon) | 0.20-0.50 |
| Mn (Manganese) | 0.70-1.00 |
| P (Phosphorus) | 0.025 max |
| S (Sulfur) | 0.015 max |
| Cr (Chromium) | 0.30 max |
| Ni (Nickel) | 0.30 max |
| Cu (Copper) | 0.30 max |
| Al (Aluminum) | 0.02-0.10 |
Mechanical Properties
The mechanical properties of GB 18248 large diameter cold drawn seamless steel tubes are summarized in the table below:
| Property | Minimum Value |
|---|---|
| Tensile Strength | 900 MPa |
| Yield Strength | 750 MPa |
| Elongation | 18% |
| Impact Toughness | 27 J |
| Hardness (HRC) | 80 |
Steel Grade
The most common steel grade used in GB 18248 large diameter cold drawn seamless steel tubes is 37Mn, which provides excellent strength and toughness for high pressure gas cylinder applications. Other steel grades that can be used include 34Mn2V, 30CrMo, 35CrMo, and 34CrMo4, depending on specific application requirements.
Application
GB 18248 large diameter cold drawn seamless steel tubes are primarily used in the manufacturing of high pressure gas cylinders. These cylinders are essential for storing and transporting compressed gases, such as oxygen, hydrogen, nitrogen, and argon. The seamless construction and high-pressure resistance of these tubes ensure the ety and reliability of the gas cylinders.
Possible Alternative Grades
Depending on specific requirements and regulations, alternate steel grades can be considered as substitutes for GB 18248 large diameter cold drawn seamless steel tubes. Some alternative grades may include ASTM A519 4130 or 4140, JIS G3429 SCM420, and DIN 2391 St52. These grades possess similar properties and can be used as suitable alternatives based on application compatibility and regional standards.
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.
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.
If you have another question, pls feel free to contact with me.
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