GB/T8163 Q345E Q345D Low-Temperature Steel Pipes/Tubes
GB/T8163 Q345E Q345D low-temperature steel pipes/tubes are widely used in industries that require reliable performance under low-temperature conditions. These pipes/tubes are specifically designed to withstand low temperatures while maintaining excellent strength and toughness. In this article, we will provide a comprehensive overview of the product description, product parameter table, mechanical properties and chemical composition, product use, and product grade standards associated with GB/T8163 Q345E Q345D low-temperature steel pipes/tubes.
Product Description:
GB/T8163 Q345E Q345D low-temperature steel pipes/tubes are manufactured using a seamless process, ensuring a consistent and uniform interior surface. These pipes/tubes are primarily made from low-alloy high-strength structural steel, which offers exceptional resistance to low temperatures and exhibits excellent mechanical properties. The seamless construction eliminates the risk of weak points and ensures reliable performance in low-temperature environments.
Product Parameter Table:
The following table provides an overview of the typical parameters for GB/T8163 Q345E Q345D low-temperature steel pipes/tubes:
| Parameter | Value |
| Outside Diameter | 16mm to 406mm |
| Wall Thickness | 2.0mm to 40mm |
| Length | 5.8 meters, 6 meters, 11.8 meters, 12 meters |
| Manufacturing Method | Hot-finished or cold-drawn |
Mechanical Properties and Chemical Composition:
GB/T8163 Q345E Q345D low-temperature steel pipes/tubes exhibit excellent mechanical properties and a defined chemical composition, making them suitable for use in low-temperature applications. The typical mechanical properties and chemical composition are as follows:
Mechanical Properties:
- Tensile Strength: ≥ 470-630 MPa
- Yield Strength: ≥ 345 MPa
- Elongation: ≥ 21%
- Impact Test Temperature: -40°C
Chemical Composition:
- Carbon (C): 0.18%
- Silicon (Si): 0.50%
- Manganese (Mn): 1.70%
- Phosphorus (P): 0.030%
- Sulfur (S): 0.030%
- Vanadium (V): 0.15-0.30%
- Niobium (Nb): 0.015-0.060%
- Titanium (Ti): 0.020-0.060%
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Product Use:
GB/T8163 Q345E Q345D low-temperature steel pipes/tubes are widely used in applications that require reliable performance in low-temperature environments. They find extensive use in industries such as oil and gas, petrochemical, power generation, and transportation. These pipes/tubes are commonly employed in low-temperature pipelines, offshore structures, and equipment that operate in severe cold conditions. Their excellent strength, toughness, and resistance to low temperatures make them ideal for such demanding applications.
Product Grade Standards:
The GB/T8163 standard encompasses two different grades: Q345E and Q345D. These grades have specific mechanical properties and chemical composition requirements, ensuring their suitability for low-temperature applications. Users can select the appropriate grade based on their specific requirements and operating conditions to ensure optimal performance.
Conclusion:
GB/T8163 Q345E Q345D low-temperature steel pipes/tubes are designed to withstand challenging low-temperature environments while maintaining excellent strength and toughness. Their seamless construction, mechanical properties, and chemical composition make them a reliable choice for various industries operating in severe cold conditions. Whether it is for low-temperature pipelines, offshore structures, or cold weather equipment, these pipes/tubes provide durability and reliability, meeting the stringent requirements of low-temperature applications.
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