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GB/T 30063
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GB/T 30063
Still deciding? Get samples first, Contact US !
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- Description
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Product Description
The implementation of GB/T 30063 standard steel pipe for the structure of straight seam submerged arc welded steel pipe, can be bent, rolled edges and similar processing and forming, also suitable for welding operations. Carbon steel pipe material grades (chemical composition) are 10, 20, 35, 45, 20Mn, 25Mn, etc. It is manufactured by hot forming or cold drawing process.
Product Size
Outer diameter: 406～1930mm
Wall thickness: 6.00～70.00mm
End: Flat end
Length: 3～12 meters or SRL, DRL, double and fixed feet.Packaging
Outer surface coated with oil or clear/black paint, also hot-dip galvanized, bundled with steel straps.
Chemical composition
C
Si
Mn
P
S
Cr
Ni
V
Nb
Ti
Al
≤，%
≤，%
≥，%
Q235B
0.20
0.35
1.40
0.045
0.045
0.30
0.30
Q235C
0.17
0.35
1.40
0.040
0.040
0.30
0.30
Q345B
0.20
0.55
1.00～1.60
0.040
0.040
0.30
0.30
0.02～0.15
0.015～0.060
0.02～0.20
Q345C
0.20
0.55
1.00～1.60
0.035
0.035
0.30
0.30
0.02～0.15
0.015～0.060
0.02～0.20
0.015
Q390B
0.20
0.55
1.00～1.60
0.040
0.040
0.30
0.70
0.02～0.20
0.015～0.060
0.02～0.20
Q390C
0.20
0.55
1.00～1.60
0.035
0.035
0.30
0.70
0.02～0.20
0.015～0.060
0.02～0.20
0.015
Q420B
0.20
0.55
1.00～1.70
0.040
0.040
0.40
0.70
0.02～0.20
0.015～0.060
0.02～0.20
Q420C
0.20
0.55
1.00～1.70
0.035
0.035
0.40
0.70
0.02～0.20
0.015～0.060
0.02～0.20
0.015
Q460C
0.20
0.55
1.00～1.70
0.035
0.035
0.70
0.70
0.02～0.20
0.015～0.060
0.02～0.20
0.015
Q460D
0.20
0.55
1.00～1.70
0.030
0.030
0.70
0.70
0.02～0.20
0.015～0.060
0.02～0.20
0.015
Product Mechanical Properties
Tensile strength MPa
Yield strength ≥, MPa
Elongation after break ≥, %
Welded joint tensile strength ≥, MPa
Impact Tests
thickness≤16mm
16mm＜thickness≥40mm
40mm＜thickness≥60mm
Temp.
℃Average absorbed work ≥, J
Q235B
370～500
235
225
215
22
370
+20
27
Q235C
370～500
235
225
215
22
370
0
27
Q345B
470～630
345
335
325
18
470
+20
34
Q345C
470～630
345
335
325
18
470
0
34
Q390B
490～650
390
370
350
18
490
+20
34
Q390C
490～650
390
370
350
18
490
0
34
Q420B
520～680
420
400
380
17
520
+20
34
Q420C
520～680
420
400
380
17
520
0
34
Q460C
550～720
460
440
420
15
550
0
34
Q460D
550～720
460
440
420
15
550
-20
34
Application range
Typically used in the construction of buildings, bridges, piles, stanchions and other general structures (except mechanical structures).
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Contact Us
Yantai Pipe industry Co., Ltd.,
E-mail: info@yantaipipe.cn
WhatsApp: 8615653819370
Tel: 0086-535-6281117
Add: No. 161 Changjiang Road, FTZ, Yantai , China