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Brief introduction to the internal control standards of seamless calcium wire

1. Chemical composition of calcium core:
Ca ≥ 97%
2. Nominal diameter of seamless calcium wire: 9.0 ~ 9.0 + 0.6mm; steel belt thickness: 1.0 ± 0.05mm;

3. Weight requirements of seamless calcium wire per meter: calcium core weight ≥ 52g/m, steel belt weight ≤ 210g/m

4. Degreasing and rust removal should be done before steel belt wrapping. The calcium core should be kept dry and no other materials should be mixed. The cored wire should be wrapped firmly, without core leakage, no seams, no thread removal, no empty wrapping, no oil or rust on the surface.

5. Packaging requirements: The weight of the iron frame should meet the general requirements of cored wire. The outer contour of the product is tightly wrapped with plastic film, and there must be a non-fading label on the outside, indicating the name, main element content, size, weight, production unit, and production date.