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

Torich International Co.,ltd
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Negotiable MOQ: 1 Piece (Price negotiable depending on order volume and customization)
Key Specifications
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Brand Name:
Place of Origin:
China
Model Number:
GB/T9808-2008, JIS G3465-2006, ASTM A519
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Port of Shipment:
China
Delivery Detail:
7 days

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

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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Torich International Co.,ltd
Business Type
Trading Company
Total Employees
101 - 200 People
Main Markets
North America, South America, Eastern Europe
Location
Jinhua, Zhejiang, China
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