Steel pipe is the main material for cold-drawn steel pipe production. The quality of steel pipe directly affects the quality of cold-drawn steel pipe production. Pipe selection should pay attention to its quality problems, identify fake and inferior products, and find out high-quality materials in many products. Cold-drawn steel pipes distinguish fake and inferior steel pipes by first looking at the surface, poor quality steel pipe surface will have hemp phenomenon, easy to scar, the surface is not very smooth. Pay attention to observe whether there are scratches and cracks on the surface of the steel pipe. The steel pipe with the above phenomena is considered to be fake and inferior products. The fake and inferior steel pipes have no metallic luster and are light red or similar to pig iron.
In addition, there is also a part to look at its cross-section, the cross-section of high-quality steel pipe is relatively neat, and fake and inferior materials due to poor material quality, the end of the cutting head often has the phenomenon of flesh loss, that is, uneven, and no metallic luster. According to the above information, the quality of cold-drawn steel pipe can be viewed from the surface, the fake and inferior products can be identified, and the best quality pipe can be selected.
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