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GB/T 9808 Alloy Steel Grade Drill Steel Pipe , Mineral Mining Seamless Steel Tubes

China GB/T 9808 Alloy Steel Grade Drill Steel Pipe , Mineral Mining Seamless Steel Tubes supplier
GB/T 9808 Alloy Steel Grade Drill Steel Pipe , Mineral Mining Seamless Steel Tubes supplier GB/T 9808 Alloy Steel Grade Drill Steel Pipe , Mineral Mining Seamless Steel Tubes supplier GB/T 9808 Alloy Steel Grade Drill Steel Pipe , Mineral Mining Seamless Steel Tubes supplier GB/T 9808 Alloy Steel Grade Drill Steel Pipe , Mineral Mining Seamless Steel Tubes supplier GB/T 9808 Alloy Steel Grade Drill Steel Pipe , Mineral Mining Seamless Steel Tubes supplier

Large Image :  GB/T 9808 Alloy Steel Grade Drill Steel Pipe , Mineral Mining Seamless Steel Tubes

Product Details:

Place of Origin: Zhejiang, China
Brand Name: Torich
Certification: ISO14001:2008, TS16949, CE PED, TUV, API,BV
Model Number: GB/T 9808

Payment & Shipping Terms:

Minimum Order Quantity: 2 TON
Price: 1000-3000 / Ton
Packaging Details: in wooden boxes or in hexagonal bundles
Delivery Time: 30-40 work days
Payment Terms: L/C, D/A, D/P, T/T, Western Union, MoneyGram
Supply Ability: 20000 Ton/Tons per Year
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Detailed Product Description
Name: GB/T 9808 Alloy Steel Grade Oil Drill Mineral Mining Seamless Steel Tubes Technique: Cold Drawn
Surface: Oiled Usage: Oil Drill Mineral Mining
Material: ZT380,490,520,540,590,640,740 OD: 6-420mm
WT: 0.5-50mm Length: 4000-12500mm

Product Name:  GB/T 9808 Alloy Steel Grade Oil Drill Mineral Mining Seamless Steel Tubes

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, for Mining Exploration,for Wire Line Drill Rod, Casing Tube, Core Barrel Tubes, Couplings

 

 

Steel Grade:  ZT380,ZT490,ZT520,ZT540,ZT590,ZT640,ZT740

 

Material: 37SiMn 38CrMoAl 30CrMnSi(A)

 

Heat treatment:  Normalized, Q+T

 

 

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.

 

 

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
~

 

 

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

 

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

 

Product Picture:

 

GB/T 9808 Alloy Steel Grade Drill Steel Pipe , Mineral Mining Seamless Steel Tubes    GB/T 9808 Alloy Steel Grade Drill Steel Pipe , Mineral Mining Seamless Steel Tubes

 

  GB/T 9808 Alloy Steel Grade Drill Steel Pipe , Mineral Mining Seamless Steel Tubes

 

Tag: Drill Steel Pipe

Contact Details
TORICH INTERNATIONAL CO.,LTD

Contact Person: Jack Jiang

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