Produsen terkemuka Seamless Boiler Steel Tubes di China, menawarkan Tube Heat Exchanger berkualitas tinggi, Seamless Carbon Boiler Tube, Tube Boiler Alloy Steel
Seamless Boiler Steel Tubes diproduksi oleh Cold Seamless Processing,
dengan kelas baja Baja Karbon Rendah, Baja Karbon Menengah, Baja Paduan dll.
Standar Teknis sebagai
ASTM A179, ASTM A192, ASTM A210, ASTM A213, ASTM A334, ASTM A335 dll
DIN17175, EN10216-2, GB / T 5310, BS3059, dll.
Kualitas baja:
Kelas Baja Karbon:
ST35.8, ST37.0, ST44, ST52;
E155, E195, E215, E235, E275, E355;
195GH, P235GH, P265GH, P195TR1, P195TR2, P235TR1, P235TR2, P265TR1, P265TR2;
SAE1010, SAE1020, SAE1026, SAE1035, SAE1045;
Tabung baja karbon: SA178, A179, A192, A210, SA213, SA214, dll.
Kelas baja paduan:
T2, T5, T9, T11, T12, T17, T21, T22, T91, T92, 15Mo3,16Mo3, 13CrMo44;
SAE4130, SAE4140, 40Cr, 40Cr4, 10CrMo910, 12CrMo910, 11CrMo910,
25CrMo4, 35CrMo, 35CrMo4, 42CrMo4, 34CrMo4, 20MnV, 20MnV6,20CrMn, 12Cr1MoVG;
Nama Produk : TORICH GB / T20409 20G 20MnG 25MnG SA210 SA213 Multi-rifled Boiler Tabung Seamless Baja bertekanan tinggi
Standar : GB / T20409
OD: 3-420mm
WT: 0,5-50mm
Panjang : 8-12m atau sesuai dengan aplikasi dan produksi aktual pelanggan.
Aplikasi : Boiler bertekanan tinggi
Kelas Baja : 20G 20MnG 25MnG SA210 SA213
Teknologi : Hot rolled, cold rolled, cold drawn
Ciri:
Konsentrisitas yang baik
Kualitas permukaan bagus
Toleransi OD dan ID yang baik
Presisi Tinggi
Kualitas stabil
Kekasaran halus
JAMINAN KUALITAS TORICH
Tabel 6 Sifat mekanik memanjang dari tabung sekrup internal pada suhu kamar
|
Number
|
Grade
|
tensile strength
RM
MPa(N/mm2 )
|
Lower yield strength
ReL /MPa((N/mm2)
|
Elongation
A/%
|
Impact energy
AKV /J
|
|
Not less than
|
|
1
|
20G
|
410~550
|
245
|
24
|
35
|
|
2
|
20MnG
|
≥415
|
240
|
22
|
35
|
|
3
|
25MnG
|
≥485
|
275
|
20
|
35
|
|
4
|
12CrMoG
|
410~560
|
205
|
21
|
35
|
|
5
|
15CrMoG
|
440~640
|
235
|
21
|
35
|
Tabel 4 Komposisi kelas dan kimia baja
|
Number
|
Brand
|
chemical
composition(mass fraction)/ %
|
|
C
|
Mn
|
Si
|
Cr
|
Mo
|
S
|
P
|
|
1
|
20G
|
0.17~0.23
|
0.35~0.65
|
0.17~0.37
|
--
|
--
|
≤0.020
|
≤0.025
|
|
2
|
20MnG
|
0.17~0.23
|
0.70~1.00
|
0.17~0.37
|
--
|
--
|
≤0.020
|
≤0.025
|
|
3
|
25MnG
|
0.22~0.29
|
0.7~1.00
|
0.17~0.37
|
--
|
--
|
≤0.020
|
≤0.025
|
|
4
|
12CrMoG
|
0.08~0.15
|
0.40~0.70
|
0.17~0.37
|
0.40~0.70
|
0.40~0.55
|
≤0.020
|
≤0.025
|
|
5
|
15CrMoG
|
0.12~0.18
|
0.40~0.70
|
0.17~0.37
|
0.80~1.10
|
0.40~0.55
|
≤0.020
|
≤0.025
|
|
Note1:Residual element
content of 20G.20MnG.25MnG
should satisfy: Cu≤0.20%.Cr≤0.25%.Ni≤0.25%.V≤0.08%.Mo≤0.15%;The remaining elements of other
brands should satisfy: Cu≤0.20%.Ni≤0.30%.
Note2:The acid soluble
aluminum in 20G steel should not be more than 0.010%.
Note3:The nitrogen content
of the steel produced by the oxygen converter plus the refining of the
furnace should not be more than 0.008%.
|
Ukuran tabung sekrup internal dan penyimpangan parameter benang yang diperbolehkan
|
Code
|
Project
|
[A" teeth types
allowable deviation
|
[B" teeth types
allowable deviation
|
|
A
|
O.D≤38.1mm
38.1mm＜O.D＜50.8mm
50.8mm≤O.D≤63.5mm
O.D≥63.5mm
|
±0.15mm
±0.20mm
±0.25mm
±0.30mm
|
--
|
|
B
|
O.D≤38.1mm
38.1mm＜O.D＜50.8mm
50.8mm≤O.D≤63.5mm
O.D≥63.5mm
|
--
|
±0.15mm
±0.20mm
±0.25mm
±0.30mm
|
|
C
|
I.D of the root of the screw
Thread:
O.D-(1.11×Minimum W.T×2)
O.D≤38.1mm
38.1mm＜O.D＜50.8mm
50.8mm≤O.D≤63.5mm
O.D≥63.5mm
|
±0.15mm
±0.20mm
±0.25mm
±0.30mm
|
±0.15mm
±0.20mm
±0.25mm
±0.30mm
|
|
E
|
Minimum I.D
|
Negative deviation to
zero
|
Negative deviation to
zero
|
|
F
|
Minimum W.T
|
+22%
0
|
+22%
0
|
|
G
|
Thread tips
|
--
|
--
|
|
I
|
Thread top width
|
--
|
--
|
|
Ja
|
Height of thread:
O.D≤38.1mm
38.1mm＜O.D＜50.8mm
50.8mm≤O.D≤63.5mm
O.D≥63.5mm
|
±0.3mm
|
±0.18mm
±0.20mm
±0.23mm
±0.28mm
|
|
K
|
Side Angle of thread.
|
±15°
|
±15°
|
|
O
|
radius of rounded corner
at the root of thread
|
--
|
--
|
|
M
|
Thread pitch
|
±3.2mm
|
±3.2mm
|
|
N
|
Thread lead
|
±3.2mm×thread tips
|
±3.2mm×thread tips
|
|
Qb
|
Helix angle
|
Rating
|
Rating
|
|
T
|
Thread top width (axial)
|
±1.3mm
|
±1.3mm
|
|
U
|
Thread top (axial)
groove width
|
--
|
--
|
|
a. For the B type, the maximum deviation of any thread height can
exceed the allowable deviation specified in the table, but it should not
exceed the allowable deviation of 0.08mm, and the average height of all
threads should be in line with the given deviation range.
b. The rating is based on the axis of the pipe.
|
Contact Now
