Chrome Thickness: 15 μm up to 25 μm Tolerance OD: ISO f7 Roughness: Ra ≤ 0.2μm Straightness: 0.5/1000mm
Related Standards: According to EN10305-1 (ex DIN 2391) for cold-drawn tubes. EN10297-1/EN10220 (ex DIN1629/DIN2448) for hot-rolled tubes. ISO9227 Standard Corrosion resistance for Ø<20 R9/120h NSS;