According to different production methods, it can be divided into hot rolled tubes, cold rolled tubes, cold drawn tubes, extruded tubes, etc. The biggest difference between cold-drawn seamless steel pipe and hot-rolled seamless steel pipe is that the precision of cold-drawn seamless steel pipe is better than that of hot-rolled seamless steel pipe. The general accuracy of cold-drawn seamless steel pipe is about 20 filaments, while the The precision of the seam pipe is about 100 wires, so cold drawn seamless steel pipe is the first choice for machining manufacturing and parts manufacturing.

CMG has been supplying and exporting good quality cold drawn seamless tube from China. Any inquiries and problems please feel free to send email.

We also supply good quality high precision cold drawn seamless tube, seamless tube for hydraulic cylinders with material certificate. We supply seamless tube in various grade and specification

Inspection items

1. Chemical Composition

2. Mechanical Properties

3. Hardness

4. Impact Test

5. Flattening Test

6. Bending Test

7. Flaring Test

8. Flange Test

9. Drift Test

10. Hydrostatic Test

11. Eddy Current Test

12. Ultrasonic Test

13. M. P. I.

14. L. M. T.

15. Size

16. Surface Quality

17. Decarburizing Layer Depth

18. Micro Structure

19. Grain Size Analysis

20. Intercrystalline Corrosion

21. Stabilization Heat Treatment.

22. Erosion Test

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