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Model No. : | GB/T 9808 |
---|---|
Brand Name : | Torich |
Type : | Seamless |
Ningbo, Zhejiang, China
Penerangan Produk
Pelbagai saiz: OD: 6-420mm WT: 0.5-50mm L: 4000-12500mm mengikut penggunaan sebenar dan pengeluaran pelanggan.
Permohonan: Untuk Bor Geologi bawah tanah untuk Minyak dan Mineral, Paip Penggerudian Perlombongan untuk Eksplorasi Tambang, untuk Rod Wire Line Wire, Tube Casing, Tabung Barel Teras, Gandingan, Paip Drill Oil, Paip Paip Penggerudian
Gred Keluli: ZT380, ZT490, ZT520, ZT540, ZT590, ZT640, ZT740
Rawatan haba: Normalized, Q + T
Bahan: 37SiMn 38CrMoAl 30CrMnSi (A)
Compositon Kimia
CHEMICAL COMPOSITION % max | |
P | S |
0.030 | 0.030 |
Ijazah Lenturan
Nominal Wall Thickness/mm |
Bending Degree/(mm/m) |
≤15 |
≤1.5 |
>15 |
≤2.0 |
Tahap lenturan rod gerudi talian talian tidak lebih besar daripada 1.0 mm per meter.
Ujian Rod Laluan Dalaman
Diameter of the Path Rod |
Length of the Path Rod(mm) |
d-1.0 |
300 |
d=D(diameter of the tube)-2S(wall thickness of the tube) |
Item ujian dan kuantiti sampel untuk tab keluli e
Serial number |
Testing item |
Sampling quantity |
1 |
Chemical composition |
1 sample from each furnace |
2 |
Tensile test |
1 sample from each batch |
3 |
Ultrasonic examination |
All |
4 |
Eddy current test |
All |
5 |
Magnetic flux leakage test |
All |
Jadual perbandingan gred
This standard |
JIS G 3465-2006 |
Related industry standard |
ZT380 |
- |
DZ240 |
ZT490 |
- |
DZ250 |
ZT520 |
STM-R780 |
- |
ZT540 |
- |
DZ255 |
ZT590 |
- |
DZ260 |
ZT640 |
- |
DZ265 |
ZT740 |
- |
DZ275 |
Toleransi
Standard | Producton Method | Tube Size | Tolerance | |
GB/T 9808-2008 | Hot rolled | OD |
(+1.0%D) +0.65 (-0.5%D) -0.35 |
|
WT | ≤10 |
(+15%S) +0.45 (-10%S) -0.35 |
||
>10 | (+12.5%S, -10%S) | |||
Cold Drawn | OD | ±0.50%D or ±0.20 | ||
WT | ±8%S or ±0.15 | |||
Q(N)/ T118-2010 | Cold Drawn | OD | OD | ±0.40%D or ±0.20 |
WT | WT | ±7%S or ±0.15 |
Komposisi kimia:
Stee Grade | C | Si | Mn | P max | S max | Cu max | Cr | Mo | B |
T600 (45MnMoB) |
0.43-0.48 | 0.17-0.37 | 1.05-1.35 | 0.02 | 0.015 | 0.20 | ~ | 0.20-0.25 |
0.001- 0.005 |
T750 (30CrMnSiA) |
0.28-0.34 | 0.90-1.20 | 0.80-1.10 | 0.02 | 0.015 | 0.20 | 0.8-1.1 | ~ | ~ |
T850 4140 |
0.38-0.43 | 0.17-0.35 | 0.70-0.90 | 0.02 | 0.015 | 0.20 | 0.9-1.1 |
0.15- 0.25 |
~ |
Hartanah Mekanikal:
Steel | Tensile Strength Mpa | Yield Point Mpa | Elongation % | Heat treatment |
Grade | min | |||
ZT380 | 640 | 380 | 14 | Normlized |
ZT490 | 690 | 490 | 12 | Normlized |
ZT540 | 740 | 590 | 12 | Normlized |
ZT590 | 770 | 590 | 12 | Normlized |
ZT640 | 790 | 640 | 12 | QT |
ZT740 | 840 | 740 | 10 | QT |
T850 | 950 | 850 | 15 |
QT |
Ningbo, Zhejiang, China
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