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GB/T 8163-2018 Seamless steel pipe for fluid conveyance
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GB/T 8163-2018 Seamless steel pipe for fluid conveyance
Still deciding? Get samples first, Contact US !
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Product Description
The steel pipe implementing GB/T 8163-2018 standard is a seamless carbon steel pipe suitable for welding and threaded connections, which can be bent, crimped and similarly processed and shaped, and is also suitable for welding operations. Pipe material grade (chemical composition) 10, 20, Q345, Q390, etc., using hot-rolled (expanded) or cold-drawn (rolled) process manufacturing.
Product Size
Outer diameter: 21.0～610.0mm
Wall thickness: 2.40～70.0mm
End: Flat end, beveled or threaded for selection
Length: 3 to 12 meters or SRL, DRL, double-footed and fixed-footedProduct Packaging
Exterior surfaces varnished clear/black, hot-dipped galvanized or corrosion-resistant (FBE, 3LP, 3LPP) optional, steel strapping.
Chemical Composition
Grade
Chemical composition, %
C
Si
Mn
P
S
Cr
Ni
Cu
Nb
V
Ti
Mo
other
10
0.07～0.13
0.17～0.37
0.35～0.65
≤0.030
≤0.030
≤0.15
≤0.30
≤0.20
20
0.17～0.23
0.17～0.37
0.35～0.65
≤0.030
≤0.030
≤0.25
≤0.30
≤0.20
Q345A
0.20
0.50
1.70
0.035
0.035
0.30
0.50
0.20
0.10
Please refer to the
product standard for details
Q345B
0.035
0.035
Q345C
0.030
0.030
Q345D
0.18
0.030
0.025
0.07
0.15
0.20
Q345E
0.025
0.020
Q390A
0.20
0.50
1.70
0.035
0.035
0.30
0.50
0.20
0.07
0.20
0.20
0.10
Q390B
0.035
0.035
Q390C
0.030
0.030
Q390D
0.030
0.025
Q390E
0.025
0.020
Product Mechanical Properties
Grade
Tensile property
Impact test
Tensile strength Rm(MPa)
Yield strength ReL(Mpa),≥
Elongation at break A %, ≥
Test temperature (℃)
Absorbed energy KV₂ J, ≥
10
335～475
205
24
—
20
410～530
245
20
—
Q345A
470～630
345
20
Q345B
+20
34
Q345C
21
0
Q345D
-20
Q345E
-40
27
Q390A
490～650
390
18
Q390B
+20
34
Q390C
19
0
Q390D
-20
Q390E
-40
27
Application
Typically used in pipeline delivery systems for the oil and gas industry and in the construction of petroleum and petrochemical refineries, power plants, boilers and ships that transport fluids and gases with high temperatures and pressures.
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Yantai Pipe industry Co., Ltd.,
E-mail: info@yantaipipe.cn
WhatsApp: 8615653819370
Tel: 0086-535-6281117
Add: No. 161 Changjiang Road, FTZ, Yantai , China