GB/T 8163 Q345 Cold Drawn Carbon Steel Tube Seamless Steel Pipe For Conveying Fluid
GB/T 8163 Q345 Cold Drawn Carbon Steel Tube Seamless Steel Pipe For Conveying Fluid
Introduction
The GB/T 8163 Q345 Cold Drawn Carbon Steel Tube is a seamless steel pipe specifically designed for conveying fluid. It is widely used in various industries due to its excellent properties and reliability. This article will provide an overview of the material, specification, key features, chemical composition, mechanical properties, steel grade, application, and possible alternative grades of this seamless steel pipe.
Material and Specification
The GB/T 8163 Q345 Cold Drawn Carbon Steel Tube is made from high-quality carbon structural steel. It is manufactured using the cold drawn process, which ensures a smooth and precise inner and outer surface finish. The seamless steel pipe is available in various sizes and thicknesses to meet different application requirements.
Key Features
The key features of the GB/T 8163 Q345 Cold Drawn Carbon Steel Tube include:
- Seamless construction: The seamless design eliminates the risk of leakage, making it suitable for conveying fluids under high pressure.
- High strength: The carbon steel material provides excellent strength and durability, ensuring long-lasting performance.
- Good weldability: The steel tube can be easily welded, allowing for convenient installation and maintenance.
- Corrosion resistance: The carbon steel tube is resistant to corrosion, making it suitable for conveying fluids in various environments.
- Versatile application: The seamless steel pipe is widely used in industries such as petroleum, chemical, natural gas, and water transportation.
Chemical Composition
| Element | Composition (%) |
|---|---|
| C (Carbon) | 0.20 max |
| Si (Silicon) | 0.55 max |
| Mn (Manganese) | 1.00-1.60 |
| P (Phosphorus) | 0.040 max |
| S (Sulfur) | 0.040 max |
| V (Vanadium) | 0.02-0.15 |
| Nb (Niobium) | 0.015-0.060 |
| Ti (Titanium) | 0.02 max |
Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength | 490-675 MPa |
| Yield Strength | 345 MPa min |
| Elongation | 21% min |
| Impact Toughness | 34 J min |
| Hardness (HB) | 187 max |
Steel Grade
The GB/T 8163 Q345 Cold Drawn Carbon Steel Tube is classified under the Q345 steel grade. This grade is widely used in China and has excellent mechanical properties, making it suitable for various applications.
Application
The GB/T 8163 Q345 Cold Drawn Carbon Steel Tube is primarily used for conveying fluids such as water, oil, and gas. It finds extensive application in industries such as petroleum, chemical, natural gas, and water transportation. The seamless construction and high strength of this steel tube make it ideal for conveying fluids under high pressure and in demanding environments.
Possible Alternative Grades
While the GB/T 8163 Q345 Cold Drawn Carbon Steel Tube is a reliable choice for many applications, there are alternative grades available depending on specific requirements. Some possible alternative grades include Q215, Q235, and Q390. These grades offer different levels of strength, ductility, and corrosion resistance, allowing users to select the most suitable option for their specific needs.


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.
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