Name: GB/T 9808 Alloy Steel Grade Drill Steel Pipe , Mineral Mining Seamless Steel Tubes
Brand: TORICH INTERNATIONAL LIMITED
SKU: GB/T 9808
Price: 2,000.00 USD
Availability: InStock

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

oil drill pipe

cold drawn steel pipe

Place of Origin:

Zhejiang, China

Brand Name:

Torich

Certification:

ISO14001:2008, TS16949, CE PED, TUV, API,BV

Model Number:

GB/T 9808

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Product Details

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

Highlight:

oil drill pipe

cold drawn steel pipe

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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Product Description

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
		WT	>10	(+12.5%S, -10%S)
	Cold Drawn	OD		±0.50%D or ±0.20
	Cold Drawn	WT		±8%S or ±0.15
Q(N)/ T118-2010	Cold Drawn	OD	OD	±0.40%D or ±0.20
Q(N)/ T118-2010	Cold Drawn	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 0

GB/T 9808 Alloy Steel Grade Drill Steel Pipe , Mineral Mining Seamless Steel Tubes 2

Tag: Drill Steel Pipe

Tags：

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

oil drill pipe

cold drawn steel pipe

oil drill pipe

cold drawn steel pipe

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

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