Steel honed tube (honed seamless tube)

chrome honed tube (Inside surface honed and outside surface plate chrome) GradeST 52Metric sizeInside diameter from 40 to 1000mm, Max length 20m. Straightness: 0.5 /1000 Tolerance EXT: DIN 2391 Tolerance INT: ISO H8 Roughness(Ra): 0.2 to 0.4µTypecold drawing, normalizing treatment, honing or skiving, plate chrome.CHEMICAL COMPOSITION (%) Si(Max)Mn(Max)C(Max)P (Max.)S(Max)0.551.600.220.0250.025 MECHANICAL PROPERTIES Tensile strength MinYield Point MinElongation % Min580 N/mm2420 N/mm210 Marking: JW, ID, ODLength: unfixed length or fixed length Package: banding with steel strips, braiding parcel at outsideConservation: 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)