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40Cr / 41Cr4 / 5140 Seamless Cold Drawn Steel Tube for Automotive Industry
Material: 40Cr / 41Cr4 / 5140
Size Range: OD: 6-88mm, WT: 1-15mm, Length: 5.8m/6m, maximal 11.8m
Cold Rolled process on the seamless steel tubes, to reach high accuracy on the OD and WT tolerance
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 Rolling, On line inspection
5. Heat Treatment:BKS, GBK, NBK
6. Straightening/Cutting to specified length/Finished Measuring Inspection
7. Quality Testing in own lab with Tensile Strength, Yield Strength, Elongation, Hardness, Straightness, etc.
8. Packing and Stocking.
100% Eddy Current Testing.
100% Size Tolerance Checking.
100% Tube surface checking to avoid surface defects.
| Product Name | 40Cr / 41Cr4 / 5140 Seamless Cold Rolled Steel Tube for Automotive Parts |
| Material | 40Cr / 41Cr4 / 5140 |
| Delivery Condition | BK, BKW, BKS, GBK, NBK |
| Standard | DIN2391 / EN10305-1 / GB/T3639 |
| Size Range | OD: 6-88mm, WT: 1-15mm |
| Application | High precision purpose, auto parts, oil cylinder, etc |
| Round Billet | Bao Steel, Xingcheng Steel, Huai Steel, Zhongtian Steel |
| Keyword | Cold Rolled Steel Tube |
| Certificate | TS16949, ISO 9001 |
| HS code | 7304319000 |
| Delivery Time | 45 days |
| Packing | Bundles or Wooden Boxes |
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Main Product:
Seamless Bearing Tubes,
Mining Drill Pipes,
Boiler Steel Tubes,
Alloy Mechanical Tubing,
Precision Steel tubes ,
Stainless Steel tubes
