Privacy statement: Your privacy is very important to Us. Our company promises not to disclose your personal information to any external company with out your explicit permission.
Модель: GB/T 9808
марка: Torich
Подробности Упаковки: packing in wooden boxes or hexagonal bundles with seaworthy packing
производительность: 20000 Tons per Year
транспорт: Ocean,Land,Air
Место происхождения: Zhejiang, China (Mainland)
Поддержка о: 60000 Ton per year
Сертификаты : ISO9001:2008 ISO14001:2008, TS16949, CE PED, TUV, API
Код ТН ВЭД: 7304192000
Порт: Shanghai,Ningbo,Wengzhou
Вид оплаты: L/C,T/T,D/P,Paypal,Money Gram,Western Union
Инкотермс: FOB,CFR,CIF,FCA,CPT
Size range: O.D.:6-420mm W.T.:0.5-50mm L:4000-12500mm according to customers' actual application and production.
Application : For Geological Drill underground for Oil and Mineral,Mining Drilling Pipe for Mining Exploration,for Wire Line Drill Rod, Casing Tube, Core Barrel Tubes, Couplings,Oil Drill Pipe, Drilling Steel Pipes
Steel Grade: ZT380,ZT490,ZT520,ZT540,ZT590,ZT640,ZT740
Heat treatment: Normalized, Q+T
Material: 37SiMn 38CrMoAl 30CrMnSi(A)
Chemical Compositon
CHEMICAL COMPOSITION % max | |
P | S |
0.030 | 0.030 |
Bending Degree
Nominal Wall Thickness/mm
Bending Degree/(mm/m)
≤15
≤1.5
>15
≤2.0
The bending degree of the wire-line drill rod is not larger than 1.0 mm per meter.
Internal Path Rod Test
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) |
Testing items and sampling quantity for steel tube
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
Grade comparison table
This
standard
JIS
G 3465-2006
Related
industry standard
ZT380
-
DZ240
ZT490
-
DZ250
ZT520
STM-R780
-
ZT540
-
DZ255
ZT590
-
DZ260
ZT640
-
DZ265
ZT740
-
DZ275
Tolerance
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 |
Chemical composition:
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 |
~ |
Mechanical Properties:
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 |
Группа Продуктов : Буровые стальные трубы
Privacy statement: Your privacy is very important to Us. Our company promises not to disclose your personal information to any external company with out your explicit permission.
Fill in more information so that we can get in touch with you faster
Privacy statement: Your privacy is very important to Us. Our company promises not to disclose your personal information to any external company with out your explicit permission.