Date:2020-10-15 View:2381 Tags:Ship Duilding tube specification table
Ship Duilding tube specification table
Ship Duilding Tube
GB/T5312-1999（ Hot rolling, extrusion, pipe expansion ）
Ship Duilding Tube
Size tolerance
Outer diameter(D)
≤159
>159
Allowable deviation of outer diameter
±1.0%(Mini±0.5mm)
±1.25%
wt(S)
≤20
S>20
D≥351
Allowable deviation of outer diameter
+15%,-10%(mini+0.45mm,-0.30mm )
±10%
±15%
Longitudinal mechanical properties of Ship Duilding Tube
Category
Grade
Tensile strength(MPa)
Yield point(MPa)≥
Elongation（%）≥
Carbon steel and carbon-manganese steel
360
360-480
215
24
410
410-530
235
22
490
490-610
285
21
1Cr0.5Mo
440
440-600
275
22
2.25Cr1Mo
410
410-560
235
20
490
490-640
275
16
Chemical composition of marine pipe
Classification of marine pipes
Grade
C
Si
Mn
P≤
S≤
Cr
Mo
Ni
Cu
Sn
W
总量
Carbon steel and carbon-manganese steel
360
≤0.17
≤0.35
0.40-0.80
0.04
0.04
≤0.25
≤0.10
≤0.30
≤0.30
-
-
≤0.70
410
≤0.21
≤0.35
0.40-1.20
0.04
0.04
≤0.25
≤0.10
≤0.30
≤0.30
-
-
≤0.70
440
≤0.23
≤0.35
0.80-1.50
0.04
0.04
≤0.25
≤0.10
≤0.30
≤0.30
-
-
≤0.70
1Cr0.5Mo
440
0.10-0.18
0.10-0.35
0.40-0.70
0.04
0.04
0.70-1.10
0.45-0.65
≤0.30
≤0.25
≤0.03
≤0.020
-
2.25Cr1Mo
410
0.08-0.15
0.10-0.35
0.40-0.70
0.04
0.04
2.00-2.50
0.90-1.20
≤0.30
≤0.25
≤0.03
≤0.020
-
