Introduction to the specification of surface condition of stainless steel at home and abroad

Specification
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Routing
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main content
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NO.1
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Hot rolling, annealing, descaling
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After hot rolling to a specified thickness, it is then annealed and descaled. Usually used in industrial applications, heat-resistant, corrosion-resistant, applications that do not require high surface smoothness
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NO. 2D
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Cold rolled, dull surface
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Cold-rolled to a specified thickness, annealed, and descaled. This surface is obtained after descaling or pickling, or finally obtained by lightly cold-rolling a work roll with a dull surface. This surface has a beneficial effect on the adhesion of lubricating oil on the surface of the material during the deep drawing process. This kind of material is usually used in deep drawing, generally the product needs to be polished after deep drawing
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NO. 2B
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Cold rolled, shiny
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It is usually produced the same as 2D, but it is finally finished with surface-polished rolls. This is the so-called cold rolled surface, which is suitable for all purposes except deep drawing (difficulty). This surface is easier to polish than NO.1 and NO.2D
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Bright annealed surface
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Cold rolled bright surface after annealing in a controlled atmosphere furnace
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Anneal in a controlled atmosphere furnace to prevent oxide scale formation. The atmosphere in the furnace is usually or a mixed gas with nitrogen (sometimes used)
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NO. 3
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Intermediate grinding surface, single-sided or double-sided processing
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Used as the final surface or the surface in the intermediate grinding state
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NO. 4
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Ordinary grinding surface, single-sided or double-sided
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It is widely used in kitchen equipment, store counters, milk making equipment, etc., starting to use coarser sand to grind, and finally using sand about 120~150
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NO. 6
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Dim and smooth surface, TAMPIO brushed surface, single-sided or double-sided treatment
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The light reflectance is lower than that of the NO.4 surface. Use a medium containing a certain amount of oil and abrasives on the surface of NO.4 for treatment, usually used for architectural and decorative purposes that do not require high brightness
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NO. 7
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High-brightness surface
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It has a high degree of reflectivity, polishes the final surface, and is mainly used for architectural and decorative purposes
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NO. 8
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Mirror surface
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The surface with the highest reflectivity that can usually be manufactured is polished with the smallest sand grains. Most of this surface is used for pressing plates and small mirrors.
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TR surface
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The surface of various regulations and requirements obtained by cold processing
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Cold working the annealed and descaled or bright annealed products, the mechanical properties obtained are much higher than the properties of the annealed material, and the surface difference depends on the amount of processing and the alloy composition of the material

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