Ready to honed tube

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Graded:St 52 Metric size: Inside diameter from 40 to 250mm Max length:14m. Straightness:0.5 /1000 Tolerance INT:ISO H9 Type: cold drawing Tubes are provided according to the norm EN10305-1, DIN 2391 Chemical composition(%) Si(Max) Mn (Max) C Max) P (Max.) S (Max) 0.55 1.60 0.22 0.025 0.025 Mechanical properties: Tensile strength Min Yield Point Min Elongation % Min 580 N/mm2 420 N/mm2 10 Excentricity: Outer Diameter Excentricity 125 mm 5 % > 125 mm 7 % measured according to the formula: E = (max Wt – min Wt)/( max Wt + min Wt) x 100 % Bore Ovality The bore ovality is comprised in the 50 % of the inside diameter tolerances. Marking: SunnySteel, ID, OD Length: unfixed length or fixed length Package: banding with steel strips, braiding parcel at outside Conservation: Anti rust oiled coating on the inside and outside of the surface, plastic caps at both ends. Impact test: -20℃, 27 J (only for special requirement)

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Sunny Steel Enterprise Ltd.

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