Drill Pipes for Oil and Mineral Mining
We specially manufacture and export Drilling Steel Pipes, Carbon Steel Drilling Pipes, Mining Drilling Pipe, Drilling Steel Pipe you may also find other Oil Drill Pipe etc.
Drill pipes Material: Alloy Steel Grade
Oil and Mineral mining tubes Type: DCDMA (USA), BS4019 (UK), METRIC (SWEDEN)
Drill pipe Production: Cold Drawn
Heat Treatment: +N, Q+T
Application: Wire Line,Drill Rod, Core Barrel Standard: GB/T9808-2008
Applications: For Geological Drill underground for Oil and Mineral, for Mining Exploration
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)/ T118-2010 | 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 | Tensile Strength Mpa | Yield Point Mpa | Elongation % | Heat treatment |
| Grade | 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 |
Drilling Parts to match the Geogloy Steel Tubes:
1. Incoming Raw Material Inspection
2. Raw Material Segregation to avoid steel grade mix-up
3. Heating and Hammering End for Cold Drawing
4. Cold Drawing and Cold Rolling, on line inspection
5. Heat Treatment, +A, +SRA, +LC, +N, Q+T
6. Straightening-Cutting to specified length-Finished Measuring Inspection
7. Machanical Testing in own labs with Tensile Strength, Yield Strength, Elongation, Hardness, Impact, Mictrostruture etc
8. Packing and Stocking.
- 100% of our steel tubes are dimensionally checked
- 100% of our steel tubes are visually checked to assure they have a perfect surface condition and no surface defects.
- 100% eddy current test and ultrosonic test to eliminate longitudinal and transversal defects.
Chemical Composition Testing Chemical Testing
Computer Recording Testing Result Portable Chemical Analyzing
Impact Testing Hardness Testing
Tensile Strength Testing ET & UT testing
Certifications
-
 | Standard:ISO9001-2008 Number:02112Q119491R2M Issue Date:2012-12-12 Expiry Date:2015-12-11 Scope/Range:Manufacture and After-Sales Service of Seamless Steel Tube Issued By:IAF |
-
 | Standard:ISO14001-2008 Number:02112E10591R2M Issue Date:2012-12-12 Expiry Date:2015-12-11 Scope/Range:Manufacture and Related Management Activities of Seamless Steel Tube Issued By:IAF |
-
 | Standard:TS16949 Number:0200393 Issue Date:2015-01-07 Expiry Date:2018-01-06 Scope/Range:Cold Drawn Seamless Steel Tubes Issued By:IATF |
-
 | Standard:Pressure Vessel Number:TS2710Q35-2015 Issue Date:2012-04-13 Expiry Date:2015-04-12 Scope/Range:Seamless Steel Tubes Issued By:State Bureau of Quality Technical Supervision |
-
 | Standard:CE PED AD 2000 W0 Number:072021423 WP101908 Issue Date:2008-07-01 Expiry Date:2018-07-01 Scope/Range:Seamless Steel Tubes Issued By:TUV Nord |
-
 | Standard:CE PED Number:072021423 WZ1019 08 Issue Date:2008-07-01 Expiry Date:2016-07-01 Scope/Range:Seamless Steel Tubes Issued By:TUV NORD |
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