Nombre del producto : TORICH GB / T13793 Material 10 # 15 # 20 # Q195 215A 235A Tubos de acero con una soldadura de resistencia eléctrica longitudinal
Estándar : GB / T13793
Rango de tamaño : OD: 5-711 mm WT: 0.5-50 mm Longitud : 4-12 mm o de acuerdo con la aplicación y producción real de los clientes.
Aplicación : Estructura de construcción, transporte de líquidos
Grado de acero : 10 # 15 # 20 # Q195 / Q235 / Q345 / Q390 / Q420
Tecnología : HFRW
Característica:
Buena concentricidad
Buena calidad superficial
Buena tolerancia de OD e ID
Alta precisión
Calidad estable
Rugosidad suave
ASEGURAMIENTO DE LA CALIDAD TORICH
Fabricante de tubo de acero soldado con autógena, elija la tubería de acero soldada en espiral de alta calidad, la tubería de acero soldada con autógena de alta frecuencia, el tubo soldado con autógena del acero de carbono negro, el tubo de acero oval etc.
Tabla 1 Tolerancia de la unidad del diámetro exterior : mm
|
Outer Diameter(D)
|
General Precesion(PD.A)a
|
Higher Precision(PD.B)
|
High Precision(PD.C)
|
|
5-20
|
±0.30
|
±0.15
|
±0.05
|
|
﹥20-35
|
±0.40
|
±0.20
|
±0.10
|
|
＞35-50
|
±0.50
|
±0.25
|
±0.15
|
|
＞50-80
|
±1%D
|
±0.35
|
±0.25
|
|
＞80-114.3
|
±0.60
|
±0.40
|
|
＞114.3-168.3
|
±0.70
|
±0.50
|
|
＞168.3-219.1
|
±0.80
|
±0.60
|
|
＞219.1-711
|
±0.75%D
|
±0.5%D
|
|
a Not apply for steel pipe for roller of belt
conveyor
|
Tabla 2 Tolerancia del espesor de la pared Unidad: mm
|
Wall Thickness(t)
|
General Precesion(PD.A)a
|
Higher Precision(PD.B)
|
High Precision(PD.C)
|
Non-uniform Wall
Thicknessb
|
|
0.50-0.70
|
±0.10
|
±0.04
|
±0.03
|
≤7.5%t
|
|
＞0.70-1.0
|
±0.05
|
±0.04
|
|
＞1.0-1.5
|
±0.06
|
±0.05
|
|
＞1.5-2.5
|
±10%t
|
±0.12
|
±0.06
|
|
＞2.5-3.5
|
±0.16
|
±0.10
|
|
＞3.5-4.5
|
±0.22
|
±0.18
|
|
＞4.5-5.5
|
±0.26
|
±0.21
|
|
＞5.5
|
±7.5%t
|
±5.0%t
|
|
a Not apply for steel pipe for roller of belt conveyor
b Not apply for General
Precesion steel tube. Non-uniform Wall Thickness means the difference between
maximum and minimum values of measured wall thickness on the same cross
section.
|
Tabla 3 El tubo de doblado de acero
|
Outer Diameter(D)/mm
|
Bending/(mm/m),No more
than
|
|
General Precesion(PD.A)
|
Higher Precision(PD.B)
|
High Precision(PD.C)
|
|
＞16
|
1.5
|
1.0
|
0.5
|
Tabla 4 La altura de la unidad de rebabas internas : mm
|
General Precesion
|
Higher Precision
|
High Precision
|
|
+0.50
-0.20
|
+0.50
-0.05
|
+0.20
-0.05
|
Tabla 5 Coeficiente de peso de la tubería de acero galvanizado
|
Wall thickness t/mm
|
1.2
|
.14
|
1.5
|
1.6
|
1.8
|
2.0
|
2.2
|
2.5
|
2.8
|
3.0
|
3.2
|
3.5
|
|
Coefficient c
|
A
|
1.106
|
1.091
|
1.085
|
1.080
|
1.071
|
1.064
|
1.058
|
1.051
|
1.045
|
1.042
|
1.040
|
1.036
|
|
Coefficient c
|
B
|
1.085
|
1.073
|
1.068
|
1.064
|
1.057
|
1.051
|
1.046
|
1.041
|
1.036
|
1.034
|
1.032
|
1.029
|
|
Coefficient c
|
C
|
1.064
|
1.055
|
1.051
|
1.048
|
1.042
|
1.038
|
1.035
|
1.031
|
1.027
|
1.025
|
1.022
|
1.020
|
|
Wall thickness t/mm
|
3.8
|
4.0
|
4.2
|
4.5
|
4.8
|
5.0
|
5.4
|
5.6
|
6.0
|
6.5
|
7.0
|
8.0
|
|
Coefficient c
|
A
|
1.034
|
1.032
|
1.030
|
1.028
|
1.027
|
1.025
|
1.024
|
1.023
|
1.021
|
1.020
|
1.018
|
1.016
|
|
Coefficient c
|
B
|
1.027
|
1.025
|
1.024
|
1.023
|
1.021
|
1.020
|
1.019
|
1.018
|
1.017
|
1.016
|
1.015
|
1.013
|
|
Coefficient c
|
C
|
1.020
|
1.019
|
1.018
|
1.017
|
1.016
|
1.015
|
1.014
|
1.014
|
1.013
|
1.012
|
1.011
|
1.010
|
|
Wall thickness t/mm
|
9.0
|
10.0
|
11.0
|
12.0
|
12.7
|
13.0
|
14.2
|
16.0
|
17.5
|
20.0
|
|
|
|
Coefficient c
|
A
|
1.014
|
1.013
|
1.012
|
1.011
|
1.010
|
1.010
|
1.009
|
1.008
|
1.007
|
1.006
|
|
|
|
Coefficient c
|
B
|
1.011
|
1.010
|
1.009
|
1.008
|
1.008
|
1.008
|
1.007
|
1.006
|
1.006
|
1.005
|
|
|
|
Coefficient c
|
C
|
1.008
|
1.008
|
1.007
|
1.006
|
1.006
|
1.006
|
1.005
|
1.005
|
1.004
|
1.004
|
|
|
Tabla 6 Propiedades Mecánicas
|
Steel Grade
|
Lower yield strength Re1./MPa
|
Tensile strength
Rm/MPa
|
Elongation
A/%
|
|
D≤168.3mm
|
D＞168.3mm
|
|
≥
|
|
08.10
|
195
|
315
|
22
|
|
15
|
215
|
355
|
20
|
|
20
|
235
|
390
|
19
|
|
Q195b
|
195
|
315
|
15
|
20
|
|
Q215A,Q215B
|
215
|
335
|
|
Q235A,Q235B,Q235C
|
235
|
370
|
|
Q275A,Q275B,Q275C
|
275
|
410
|
13
|
18
|
|
Q345A,Q345B,Q345C
|
345
|
470
|
|
Q390A,Q390B,Q390C
|
390
|
490
|
19
|
|
Q420A,Q420B,Q420C
|
420
|
520
|
19
|
|
Q460C,Q460D
|
460
|
550
|
17
|
Tabla 7 Peso de la capa galvanizada por inmersión en caliente
|
Weight grade of galvanized
layer
|
Requirement
|
The total weight of zinc coating per unit area of the inner and
outer surfaces
/(g/㎡)
no less than
|
|
A
|
Inside and outside surface
|
500
|
|
B
|
Inside and outside surface
|
400
|
|
C
|
Inside and outside surface
|
300
|
Tabla 8 Elementos de prueba y muestreo para tubos de acero
|
Number
|
Test items
|
Test frequency
|
Sampling quantity
|
|
1
|
Smelting
analysis
|
1/furnace
|
1
|
|
2
|
Finished
product analysis
|
1/furnace
|
1
|
|
3
|
Tensile
test
|
1/batch
|
1
|
|
4
|
Weld
tensile test
|
1/batch
|
1
|
|
5
|
Impact
test
|
1/batch
|
2
groups in a time, 3 samples in a group
|
|
6
|
Flattening
test
|
1/batch
|
1
sample on 2 pipes in each batch
|
|
7
|
Bending
test
|
1/batch
|
1
sample on 2 pipes in each batch
|
|
8
|
Flaring test
|
1/batch
|
1
sample on 2 pipes in each batch
|
|
9
|
Hydraulic
test
|
All
|
All
|
|
10
|
Ultrasonic
testing
|
All
|
All
|
|
11
|
Eddy
current testing
|
All
|
All
|
|
12
|
Galvanized
layer uniformity test
|
1/batch
|
1/batch
|
|
13
|
Galvanized
weight determination
|
1/batch
|
1/batch
|
|
14
|
Galvanized
layer adhesion test
|
1/batch
|
1/batch
|
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