Category 1Medium and high carbon hard wire
- Grade 35 45 60 65 70 85
The chemical composition is uniform, the performance of the strip is stable; the dimensional accuracy is high, the surface quality is good; the structure is uniform, the content of inclusions is low, the grain size is moderate, and the drawing performance is good.
Category 2 Steel for prestressed wire rope and strand
Grade SWRH77B SWRH82B SWRH77BCr SWRH82BCr
Stable performance, excellent plasticity and ductility; high dimensional accuracy, good surface quality; chemical composition, release
The carbon layer and inclusions are strictly controlled and the structure is uniform.