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Seamless Precision Steel Tube 120mm OD , Auto Parts Large Diameter Steel Tube
|Type||Welded Or Seamless||Processing||Cold Drawn, Cold Rolled|
precision steel pipe,
erw precision tubes
ST52 Q345B Cold Drawn Precision Steel Tube Round Cold Drawn Honed Tubes For Auto
|1. BK (+C)||No heat treatment after last cold forming process.|
|2. BKW (+LC)||After last heat treatment there is a light finishing pass (cold drawing)|
|3. BKS (+SR)||After the final cold forming process the tubes are stress relieve annealed.|
|4. GBK (+A)||After the final cold forming process the tubes are annealed in a controlled atmosphere.|
|5. NBK (+N)||
After the final cold forming process the tubes are annealed above the upper transformation
point in a controlled atmosphere.
|Package||1. Bundle Packing.|
|2. Plain end or vanished as per customer's request.|
|3. Wrapped in waterproof paper.|
|4. Sackcloth with several steel strips.|
|5. Pack in heavy tri-wall boxes.|
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.