GB/T 6479 10#, 20#, Q345B, Q345C, Q345D Fertilizer Tubes Seamless Steel Pipe for High Pressure Fertilizer Equipment
Introduction
The GB/T 6479 standard specifies the requirements for seamless steel pipes used in high-pressure fertilizer equipment. This standard is crucial for ensuring the safety and reliability of pipes used in the fertilizer industry, where high pressures and corrosive environments are common.
Material
The primary materials used for the production of seamless steel pipes under this standard include various grades of carbon steel, specifically designed to withstand high pressure and corrosive conditions.
Specification
The specifications for GB/T 6479 seamless steel pipes include dimensions, tolerances, and mechanical properties. The pipes are typically available in various diameters and wall thicknesses to meet different application requirements.
Key Features
- Seamless Construction: Provides enhanced strength and durability.
- High Pressure Resistance: Designed to withstand high-pressure environments.
- Corrosion Resistance: Suitable for use in fertilizer applications where corrosive substances are present.
- Versatile Applications: Can be used in various fertilizer production processes.
Chemical Composition
| Steel Grade | C (%) | Si (%) | Mn (%) | P (%) | S (%) | Cr (%) | Ni (%) | Mo (%) |
| 10# | 0.10 | 0.17 | 0.40 | 0.035 | 0.035 | - | - | - |
| 20# | 0.17 | 0.17 | 0.50 | 0.035 | 0.035 | - | - | - |
| Q345B | 0.12 | 0.20 | 1.00 | 0.020 | 0.020 | 0.30 | 0.30 | 0.10 |
| Q345C | 0.12 | 0.20 | 1.00 | 0.020 | 0.020 | 0.30 | 0.30 | 0.10 |
| Q345D | 0.12 | 0.20 | 1.00 | 0.020 | 0.020 | 0.30 | 0.30 | 0.10 |
Mechanical Properties
| Steel Grade | Yield Strength (MPa) | Tensile Strength (MPa) | Elongation (%) | Impact Toughness (J) |
| 10# | ≥ 235 | 400-550 | ≥ 20 | - |
| 20# | ≥ 245 | 410-580 | ≥ 20 | - |
| Q345B | ≥ 345 | 470-630 | ≥ 21 | ≥ 27 |
| Q345C | ≥ 345 | 470-630 | ≥ 21 | ≥ 34 |
| Q345D | ≥ 345 | 470-630 | ≥ 21 | ≥ 34 |
Steel Grade
The steel grades specified in GB/T 6479 include:
- 10#
- 20#
- Q345B
- Q345C
- Q345D
These grades are selected based on the specific requirements of the application, including strength, toughness, and corrosion resistance.
Application
Seamless steel pipes conforming to GB/T 6479 are primarily used in:
- High-pressure fertilizer equipment
- Chemical processing plants
- Oil and gas industries
- Water treatment facilities
Possible Alternative Grades
While GB/T 6479 specifies certain grades, alternative grades may also be considered depending on specific application requirements. Some possible alternatives include:
- ASTM A106 Grade B
- ASTM A53 Grade B
- API 5L Grade B
These alternative grades may offer similar mechanical properties and chemical compositions suitable for high-pressure applications.
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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.
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GB/T 6479 Q345B Fertilizer Tubes Seamless Steel Pipe For High Pressure Fertilizer Equipment Images
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