GB/T 18984 16MnDG Low Temp Carbon Steel Pipe Tubes For Low Temperature Service
GB/T 18984 16MnDG Seamless Steel Tubes For Low-Temperature Service
GB/T 18984 16MnDG is a Chinese national standard that specifies the technical requirements for seamless steel pipes made of 16MnDG grade low-temperature resistant steel. These pipes are designed to withstand low-temperature environments and are commonly used in various industries that require resistance to low temperatures and high pressures.
Applications:
The GB/T 18984 16MnDG seamless steel pipes find wide applications in the following areas:
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Oil and Gas Industry: These pipes are used for transporting oil, gas, and other fluids in pipelines operating under low-temperature conditions. They are suitable for both onshore and offshore oil and gas exploration and production.
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Petrochemical Industry: 16MnDG seamless steel pipes are utilized in petrochemical plants for the transportation of chemicals and gases at low temperatures. They are crucial for processes such as refining, cracking, and storage.
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Power Generation: These pipes are employed in power plants, particularly in the construction of boilers and heat exchangers. They provide a reliable conduit for steam and other fluids at low temperatures and high pressures.
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Shipbuilding: GB/T 18984 16MnDG seamless steel pipes are used in the construction of ships and offshore structures. They are applied in critical systems such as the ship's propulsion, cooling, and hydraulic systems, where low-temperature resistance is essential.
Functions:
The GB/T 18984 16MnDG seamless steel pipes serve the following key functions:
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Low-Temperature Resistance: These pipes are specifically designed to withstand low-temperature environments, ensuring the safe and efficient transportation of fluids in various industries.
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High Pressure Resistance: The 16MnDG grade steel used in these pipes exhibits excellent mechanical strength, enabling them to withstand high-pressure conditions encountered in demanding applications.
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Corrosion Resistance: The seamless steel pipes are resistant to corrosion, ensuring long-term durability and reliability in corrosive environments.
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Seamless Construction: The pipes are manufactured using seamless processing techniques, resulting in a smooth internal surface and uniform dimensions. This seamless construction minimizes the risk of leaks and enhances fluid flow efficiency.
| Aspect | Description |
|---|---|
| Standard | GB/T 18984-2016454647484950 |
| Grade | 16MnDG |
| Application | Designed for low-temperature service and high-pressure applications |
| Element | Typical Range (%) |
|---|---|
| Carbon (C) | 0.12-0.20 |
| Manganese (Mn) | 1.20-1.50 |
| Phosphorus (P) | ≤ 0.025 |
| Sulfur (S) | ≤ 0.025 |
| Silicon (Si) | ≤ 0.40 |
| Chromium (Cr) | — |
| Nickel (Ni) | — |
| Property | Typical Range |
|---|---|
| Tensile Strength (MPa) | 470-660 |
| Yield Strength (MPa) | ≥ 270 (0.2% offset) |
| Elongation (%) | ≥ 22 (for pipes ≤ 40mm in diameter) |
| ≥ 20 (for pipes > 40mm in diameter) | |
| Impact Energy (J) | ≥ 40 (at -20°C) |
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