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TORICH INTERNATIONAL CO.,LTD
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Large Diameter Mechanical Drill Steel Pipe , Hot rolled / Cold Drawn Steel Pipe
| Place of Origin: | Zhejiang, China (Mainland) |
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Product Detail
Mining tubes with Alloy steel grade
Straightness, Concentricity, Mechanical Properties can
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 |
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| WT | ≤10 | (+15%S) +0.45 (-10%S) -0.35 |
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| 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 | |||||
Applications:For Geological Drill underground for Oil and mineral, for mining
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Company Info
TORICH INTERNATIONAL CO.,LTD [China (Mainland)]
Business Type:Manufacturer
City: Ningbo
Province/State: Zhejiang
Country/Region: China (Mainland)
