Name: Seamless Straightness Steel Tubes for Drilling GB/T 9808 37SiMn 38CrMoAl
Brand: TORICH INTERNATIONAL LIMITED
SKU: GB/T 9808
Price: 2,550.00 USD
Availability: InStock

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Seamless Straightness Steel Tubes for Drilling GB/T 9808 37SiMn 38CrMoAl

seamless steel pipe

precision stainless steel tubing

Place of Origin:

Zhejiang China

Brand Name:

TORICH

Certification:

ISO 9001 ISO 14001 TS 16949

Model Number:

GB/T 9808

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Product Details

Product Name:

Good Straightness Seamless Steel Tubes For Drilling GB/T 9808 37SiMn 38CrMoAl

Material:

37SiMn 38CrMoAl

Surface:

With Anti Rust Protection

Application:

For Geological Drill Underground For Oil And Mineral, For Mining

Shape:

Round

OD:

6-95mm

WT:

1-10mm

Length:

4-12.5m

Highlight:

seamless steel pipe

precision stainless steel tubing

Payment & Shipping Terms

Minimum Order Quantity

5 Ton

Price

negotiable

Packaging Details

Packing in wooden box，hexagonal bundles or other seaworthy ways.

Delivery Time

30 days

Payment Terms

L/C, D/A, D/P, T/T, Western Union, MoneyGram

Supply Ability

40000 Ton/Year

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Product Description

Good Straightness Seamless Steel Tubes for Drilling GB/T 9808 37SiMn 38CrMoAl

Spec:
Material:37SiMn 38CrMoAl
Size Range:OD:6-95mm
WT:1-10mm
General Length:4-12m

Chemical Compositon

CHEMICAL COMPOSITION % max
P	S
0.030	0.030

Tolerance of Outer Diameter and Wall Thickness

Standard	Production Method	Tube Size		Tolerance
GB/T 9808-2008	Hot rolled	OD		(+1.0%D) or +0.65 (-0.5%D) -0.35
		WT	≤10	(+15%S)or +0.45 (-10%S) -0.35
		WT	>10	(+12.5%S, -10%S)
	Cold Drawn(rolled)	OD		±0.50%D or ±0.20
	Cold Drawn(rolled)	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

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)

Mechanical Property

No.	Grade	Tensile Strangth Rm/MPa	Specifies the non-proportional extension strength Rp0.2/MPa	Percentage elongation after fracture A/%
No.	Grade	No less than
1	ZT380	640	380	14
2	ZT490	690	490	12
3	ZT520	780	520^a	15^b
4	ZT540	740	540	12
5	ZT590	770	590	12
6	ZT640	790	640	12
7	ZT740	840	740	10
^a Grade ZT520 measure R_P0.5 ^bGrade ZT520 use tensile sample S4 S5 or S6 in GB/T 228

Testing items and sampling quantity for steel tubes

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

Mining Tubes with Alloy :For Geological Drill underground for Oil and mineral, for mining

Our Advantage:

Professional steel tube maker

Superior quality and Competitive Price

First-class production technology and Double quality control

Fast delivery and Best services

Tags：

Seamless Straightness Steel Tubes for Drilling GB/T 9808 37SiMn 38CrMoAl

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precision stainless steel tubing

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