Name: Large Diameter Mechanical Drill Steel Pipe , Hot rolled / Cold Drawn Steel Pipe
Brand: TORICH INTERNATIONAL LIMITED
SKU: GB/T9808-2008, JIS G3465-2006, ASTM A519
Price: 10000.00 USD
Availability: InStock

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

oil drill pipe

cold drawn steel pipe

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GB/T9808-2008, JIS G3465-2006, ASTM A519

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cold drawn steel pipe

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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		Normlized
ZT640	790		640		12		QT
ZT740	840		740		10		QT
T850	950		850		15		QT