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Large Diameter Mechanical Drill Steel Pipe , Hot rolled / Cold Drawn Steel Pipe

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Payment TermsT/T L/C D/P D/A
Delivery Detail7 days

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Product Details

Place of Origin	China
Model Number	GB/T9808-2008, JIS G3465-2006, ASTM A519

Product Description

Mining tubes with Alloy steel grade

Straightness, Concentricity, Mechanical Properties can meet the requirement of DCDMA (USA), BS4019 (UK), METRIC (SWEDEN)

Size range: O.D.:6-95mm W.T.:1-10mm L:max12000mm

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)/ XJY118-2010	Cold drawn	OD	OD	±0.40%D or ±0.20
WT	WT	±7%S or ±0.15

Normal Sizes:
Designation	Outside Diameter (mm)	Inside Diameter (mm)
	Min	Max	Min	Max
A Wireline	44.45	44.70	34.82	35.07
B Wireline	55.55	55.90	45.95	46.30
N Wireline	69.95	70.30	60.05	60.30
H Wireline	88.90	89.38	77.62	78.10
P Wireline	114.30	114.78	102.79	103.27

Mechanical Properties:
Stee Grade	Tensile Strength Mpa min	Yield Strength Mpa min	Elongation % min	HRC	Heat Treatment
T600	790	600	14	~	N
T750	850	750	14	26-31	QT
T850	950	850	14	28-33	QT

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 Grade	Tensile Strength Mpa		Yield Point Mpa		Elongation %	Heat treatment
Min
ZT380	640	380	14	Normlized
ZT490	690	490	12	Normlized
ZT540	740	590	12	Normlized
ZT590	770	590	12	Normlize

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Chat Now; Phone86-574-88086983; Address706 Qiling Mansion North Building Yinzhou District, Ningbo China., Jinhua, Zhejiang

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