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High precision cold drawn tube

The specifications that high-precision cold drawn tubes must meet in terms of specifications and appearance quality:
       No matter what product is produced, there are relevant regulations to define it, including product size, specifications, quality, etc. Only qualified products can be launched into the market for use. Taking cold drawn tube manufacturers as an example, what requirements do the specifications and appearance quality of cold drawn tube products need to meet?
        Regarding the specifications of cold-drawn tubes, relevant regulations have been issued. In terms of length, if the wall thickness of cold-drawn tubes is 0.5~1.0mm, the length should be controlled at 1.0~7m; if the wall thickness is greater than 1.0mm, the length can be expanded to 1.5~8m. In terms of diameter, the diameter of cold drawn tubes can be controlled between 6 and 200 mm; and the wall thickness can also be maintained between 0.5 and 21 mm. It can be seen that there are many choices for the specifications of cold drawn tubes.
        Regarding the surface quality of cold drawn pipes, in addition to not having some obvious defects, such as cracks, folds, cracks, cracks, folds, delamination, scarring, etc., the negative deviation of the pipe wall thickness and outer diameter cannot exceed the specified range. Only after meeting the above requirements can it be regarded as a qualified cold drawn tube product.

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