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GB/T 6479 Q345E Seamless Steel Pipes/Tubes For High-Pressure Fertilizer
GB/T 6479 Q345E Seamless Steel Pipes/Tubes are high-quality seamless tubes designed for use in the high-pressure fertilizer industry. These pipes are manufactured in accordance with the Chinese national standard GB/T 6479, which specifies the technical requirements for seamless steel tubes suitable for high-pressure applications. The Q345E grade indicates a specific strength level and quality, making these tubes ideal for applications requiring high-pressure resistance and structural integrity.
Advantages:
High Pressure Resistance: Designed to withstand high internal pressures, making them suitable for fertilizer production where high pressures are common.
Seamless Construction: The seamless design eliminates the risk of leakage at the welds, providing a more reliable and safer option for high-pressure applications.
Chemical and Corrosion Resistance: Formulated to resist the corrosive effects of fertilizer chemicals, ensuring a longer service life.
High Strength: The Q345E grade offers a balance of strength and toughness, which is crucial for maintaining pipe integrity under pressure.
Precision Dimensions: Manufactured to precise dimensions to ensure a perfect fit and ease of installation.
Chemistry Composition
C, %
Si, %
Mn, %
P, %
S, %
Cu, %
Cr, %
Ni, %
Nb, %
Mo, %
V, %
0.12-0.20
0.20-0.50
1.20-1.70
0.025 max
0.015 max
0.20 max
0.30 max
0.50 max
0.07 max
0.10 max
0.15 max
Mechanical Properties
Tensile Strength , MPa
Yield Strength, MPa
Elongation, %
Impact (KV2)/J at 20℃
490-670
345 min
21 min
40 (OD≥76mm & WT≥6.5mm)
Outside Diameter & Tolerance
Hot Rolled
Outside Diameter, mm
Tolerance
OD≤159
+1% or +0.50mm
OD>159
Cold Drawn
Outside Diameter, mm
Tolerance
Ordinary
Advanced
OD≤30
±0.20mm
±0.15mm
30＜OD≤50
±0.30mm
±0.25mm
OD>50
±0.50%
±0.50%
Wall thickness & Tolerance
Hot Rolled
Outside Diameter, mm
Tolerance
OD≤159
+12.5%/-10% or +0.50mm/-0.40mm
OD>159, WT/OD≤0.05
+15%/-10%
OD>159, 0.05＜WT/OD≤0.10
+12.5%/-10%
OD>159, WT/OD>0.10
±10%
Cold Drawn
Wall Thickness, mm
Tolerance
Ordinary
Advanced
WT≤2.0
+12.5%/-10%
±10%
WT>2.0
±10%
±7.5%
Uses:
Fertilizer Production Plants: Utilized in the piping systems of plants that produce fertilizers, where high pressures are necessary for the mixing and processing of materials.
Chemical Industry: Suitable for other chemical processes that require the transportation of materials under high pressure.
Oil and Gas Industry: Can be used in applications within the oil and gas sector where high-pressure pipelines are required.
Industrial Equipment: Employed in various pieces of industrial equipment that operate under high pressure, such as reactors and heat exchangers.
Structural Applications: Due to their strength, these tubes can also be used in structural applications where high-pressure resistance is needed.
Cangzhou Baoyang Pipeline Equipment Co., Ltd. is located in Hope New District, Mengcun County, Hebei Province, China's pipeline equipment base. The company was founded in 2018 with a registered capital of 10 million yuan. It is an enterprise integrating steel pipe spot warehousing,... Cangzhou Baoyang Pipeline Equipment Co., Ltd. is located in Hope New District, Mengcun County, Hebei Province, China's pipeline equipment base. The company was founded in 2018 with a registered capital of 10 million yuan. It is an enterprise integrating steel pipe spot warehousing,...
