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Use spark to distinguish the material of anti-corrosion spiral steel pipe

Various anti-corrosion spiral steel pipe materials will produce different sparks through contact with the grinding wheel.

1. The spark from the SKH2 steel is an arc.

2. 304 anti-corrosion spiral steel pipe sprayed a shorter spark

3. The spark of the 20C material steel is long and scattered.

4. The sparks from SK5 steel are far from disorder

Through such different sparks, it can be judged whether it is a 304 anti-corrosion spiral steel pipe belt, in which the characteristics of the spark are chrysanthemum, gun-like, white jade spark.