Heat Exchanger Alloy Steel Seamless Pipes Fin Tube Copper Coated Surface GB/T19447
Product Details
seamless alloy steel tube
,alloy steel seamless tubes
,alloy round tube
| Material | C10200, C11000 Etc |
| Size | Fin Thickness: 0.1-2mm; Tube OD: 8-55mm; Length: max 12m |
| Fin Pitch | Customize |
| Surface | Copper Coated |
| End protector | Plain End / Beveled End |
| Application | Oil&Gas Well Drilling, For Heat Exchanger |
| Test | Tension Test, Flaring Test, Flange Test, Reverse Test, Hardness Test, Hydrostatic or Nondestructive Electric Test |
Quick Detail:
Low Finned Tubes add short fin in the tube wall that greatly increase the surface area over smooth tube. The fins are formed into the tube wall so the outside diameter of the fins are not larger than the pre-finned smooth tube.Energy Transfer is solely focused on producing the largest variety and most complete solutions for finned tubing. Low finned tubes can be provided with a smooth or rifled tube inside surface.
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Plain tube (mm)
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Finned section dimensions (mm)
|
Ratio
|
De
|
|||
|
D×t
|
Tp
|
dd
|
dr
|
di
|
η
|
mm
|
|
19×2
|
0.8
|
18.8
|
17
|
134
|
2.8
|
17.9
|
|
19×2
|
1
|
18.8
|
16.8
|
13.4
|
2.5
|
17.8
|
|
19×2
|
1.25
|
18.8
|
16.6
|
13
|
2.2
|
17.8
|
|
19×2
|
1.5
|
18.8
|
16.4
|
13
|
2
|
17.7
|
|
19×2
|
2
|
18.8
|
23
|
13
|
1.7
|
17.5
|
|
25×2.5
|
0.8
|
24.8
|
22.6
|
18.8
|
2.8
|
23.9
|
|
25×2.5
|
1
|
24.8
|
22.3
|
18.8
|
2.75
|
23.7
|
|
25×2.5
|
1.25
|
24.8
|
22.3
|
18
|
2.5
|
23.6
|
|
25×2.5
|
1.5
|
24.8
|
22.3
|
18
|
2.2
|
23.5
|
|
25×2.5
|
2
|
24.8
|
22
|
18
|
1.8
|
23.4
|
|
25×2.5
|
2.5
|
24.8
|
22
|
18
|
1.6
|
23.3
|
| D------Outside diameter of plain end section Dof----Diameter of top fins Dr-----Root diameter of finned section Di-----Inside diameter of finned section T------Wall thickness of plain end section Tp-----Fin pitch De----Equivalent diameter of finned tube L------Plain tube end length |
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QUALITY CONTROL:
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.
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